# API Tool Calls (remote · apitoolcalls.com)

94 tools, one small door: home costs, fitness, QR, barcodes, Markdown, SEO, recalls.

- Trust score: 84/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `apitoolcalls.com`: 84/100 (this document), [markdown](https://verifymcp.io/servers/cowerxdev-apitoolcalls/apitoolcalls-2.md), [page](https://verifymcp.io/servers/cowerxdev-apitoolcalls/apitoolcalls-2)

## Channel facts

- Endpoint: `https://apitoolcalls.com/mcp?tools=all`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.2.5`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 12217 tokens (~129/item across 94 items; 94 tools + 0 resources), over budget; trim descriptions and params.
  - Tools include usage examples.
- **Stability & Change Management**: 100/100
  - No destabilizing schema changes in the last 30 days.
- **Tool Coverage**: 95/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 83% of tool parameters carry a description.
  - Structured output schemas are declared (66% of tools); any adoption earns full credit.
- **Tool Safety**: 75/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "pay_convert" implies "pay" and declares readOnlyHint instead, contradicting what its own name says it does.
  - An AI judge read all 94 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the API Tool Calls MCP server?

API Tool Calls is a hosted endpoint at https://apitoolcalls.com/mcp?tools=all, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http cowerxdev-apitoolcalls 'https://apitoolcalls.com/mcp?tools=all'
```

### Cursor

```json
{
  "mcpServers": {
    "cowerxdev-apitoolcalls": {
      "url": "https://apitoolcalls.com/mcp?tools=all"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "cowerxdev-apitoolcalls": {
      "type": "http",
      "url": "https://apitoolcalls.com/mcp?tools=all"
    }
  }
}
```

### Codex

```toml
[mcp_servers.cowerxdev-apitoolcalls]
url = "https://apitoolcalls.com/mcp?tools=all"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "cowerxdev-apitoolcalls": {
      "type": "remote",
      "url": "https://apitoolcalls.com/mcp?tools=all",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add cowerxdev-apitoolcalls --url 'https://apitoolcalls.com/mcp?tools=all' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  cowerxdev-apitoolcalls:
    url: "https://apitoolcalls.com/mcp?tools=all"
```

### Netclaw

```json
{
  "McpServers": {
    "cowerxdev-apitoolcalls": {
      "Transport": "http",
      "Url": "https://apitoolcalls.com/mcp?tools=all"
    }
  }
}
```

### Vellum

```bash
assistant mcp add cowerxdev-apitoolcalls -t streamable-http -u 'https://apitoolcalls.com/mcp?tools=all'
```

### Other

```json
{
  "mcpServers": {
    "cowerxdev-apitoolcalls": {
      "type": "http",
      "url": "https://apitoolcalls.com/mcp?tools=all"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-03 (score 84, +1)

- [security] Stability: 0.97 → pass

### 2026-11-01 (score 83, +1)

No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-30 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-28 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-26 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 70 to 73. That category is still filling its 30-day observation window: 21 days of observed history at the previous scan, 22 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-24 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 63 to 67. That category is still filling its 30-day observation window: 19 days of observed history at the previous scan, 20 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-21 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-19 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 47 to 50. That category is still filling its 30-day observation window: 14 days of observed history at the previous scan, 15 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (94)

### `make_qr` (~68 tokens)

QR code maker

Make an SVG QR code for text, a URL, or Wi-Fi network details.

Input parameters:

- `format` (string)
- `text` (string): Text or URL to encode. Required unless wifi is provided.
- `wifi` (object): Wi-Fi details; takes precedence over text when present.

### `get_transcript` (~67 tokens)

YouTube to transcript

Read public YouTube captions as timestamped plain text. Captions only, no video or audio.

Input parameters:

- `lang` (string): Preferred caption language; falls back to English, then any available track.
- `url` (string, required): YouTube video URL or an 11-character video id.

### `resume_gap` (~93 tokens)

Résumé vs job description

Compare résumé skills with Columbus, Ohio job postings, or with one pasted job description. Résumé is not stored.

Input parameters:

- `family` (string): Job family for the Columbus postings check; required unless job_ad is given.
- `job_ad` (string): Plain text of one job description; lists the skills it names that the résumé shows and does not show.
- `resume_text` (string, required): Plain text of the résumé.

### `page_to_markdown` (~60 tokens)

Page to Markdown

Read one public HTML page as clean Markdown with title, headings, lists, tables and absolute links. No logins, paywalls or JavaScript rendering; 2 MB HTML limit.

Input parameters:

- `url` (string, required): Public http or https page URL.

### `seo_check` (~77 tokens)

SEO Checker

Check one public HTML page with fixed SEO rules. Returns schema 1, score, strengths, ranked fixes and facts. No JavaScript rendering; 10 seconds overall, 2 MB HTML and at most 20 links. Public HTTP/HTTPS ports 80/443 only.

Input parameters:

- `url` (string, required): Public http or https page URL.

### `page_check` (~78 tokens)

Page Checker

Check whether one public HTML page shows content. Returns working, suspect or broken, findings with reasons and bounded snippets, status, final URL and text length. No JavaScript rendering; 10 seconds overall, 2 MB HTML. Public HTTP/HTTPS ports 80/443 only.

Input parameters:

- `url` (string, required): Public http or https page URL.

### `find_data` (~102 tokens)

Data Finder

Get a full Data Finder plan for up to three sources: fit, cost at your monthly volume, resale terms with recorded clause, URL and read date, and build-it-yourself guidance. No live source lookup. Defaults: volume 0, US, no resale.

Input parameters:

- `geo` (string)
- `resell` (string)
- `use_case` (string, required): Describe the data you need and what you want to build.
- `volume` (integer)

### `recall_check` (~100 tokens)

Recall Check

Search local U.S. CPSC data for up to 10 recall notices that may match — check the notice. updated_at is when this local copy of CPSC data was last refreshed (UTC, ISO 8601), not a recall date; each match's date is its notice date. May not cover every batch or country; read the notice. No CPSC endorsement.

Input parameters:

- `query` (string, required): Product name, brand, model number or UPC.

### `basement_water_cause` (~510 tokens)

Basement water cause finder

Narrow down why a basement gets wet and who fixes it. Eight observation groups return every rule-matched possible cause, evidence, safe first checks, trade referrals and sources. Hazard stops come first; no probabilities or structural diagnosis. Pure rules, no network or model.

Input parameters:

- `grading`: Select observed codes, [] for none observed, or 'unknown'. slopes_toward: Ground slopes toward the house; puddles: Puddles beside the foundation
- `gutters`: Select observed codes, [] for none observed, or 'unknown'. overflowing: Gutters overflowing; missing: Gutters missing; downspout_near: Downspout discharges near the foundation
- `hazard`: Select observed codes, [] for none observed, or 'unknown'. standing_water: Standing water; sewage: Sewage or suspected drain backup; electrical: Possible water contact with electrical equipment
- `moisture`: Select observed codes, [] for none observed, or 'unknown'. cold_surface_sweating: Cold surfaces sweating; humid_air: Humid air entering; indoor_sources: Indoor moisture sources; visible_drip: Visible…
- `sump`: Select observed codes, [] for none observed, or 'unknown'. none: No sump; power_lost: Sump power was lost; pit_filling_no_discharge: Pit filling without discharge; running: Sump is running; seepage_n…
- `timing`: Select observed codes, [] for none observed, or 'unknown'. rain: Wetness after rain; snowmelt: Wetness after snowmelt; dry_weather: Wetness during dry weather; water_use: Wetness during water use; hu…
- `where`: Select observed codes, [] for none observed, or 'unknown'. wall_crack: Water at a wall crack; wall_floor_joint: Water at the wall-floor joint; floor: Water through the floor; window: Water at a windo…
- `window_well`: Select observed codes, [] for none observed, or 'unknown'. debris: Debris in a window well; ponding: Water collects in a window well; starts_at_window: Wetness starts at the window

### `kitchen_remodel_cost` (~245 tokens)

Kitchen Remodel Cost Estimator

Estimate a kitchen remodel budget from kitchen size and finishes. Size and scope return a national planning estimate range rounded to the nearest 100 dollars, with no published typical figure, two separate dated reference cards and sources. The result has no line items or labor/material split: the published bands include both, and no public source we trust splits them for a typical kitchen. Pure arithmetic, no network or model.

Input parameters:

- `area_sqft` (number): Kitchen floor area in square feet, 20–1,000. Use area OR length and width.
- `length_ft` (number): Kitchen length in feet; requires width_ft instead of area_sqft. Product must be 20–1,000 sq ft.
- `scope` (string, required): partial: $60–$150/sq ft, may include DIY work; full: $150–$250/sq ft, same layout; layout_change: $250–$350/sq ft, layout changes / high-end. Bands include labor and materials.
- `width_ft` (number): Kitchen width in feet; requires length_ft instead of area_sqft. Product must be 20–1,000 sq ft.

### `flooring_cost` (~169 tokens)

Flooring Cost Calculator

Estimate installed flooring costs for given room sizes. Returns national installed ranges (labor and materials), no labor-only figure, and no published typical figure. One call compares all eight materials using net room area, with hardwood order guidance, an unpriced prep checklist, a separate historical Census reference card and dated sources. Pure arithmetic, no network or model.

Input parameters:

- `layout` (string): Only changes the hardwood order amount: standard 5%, diagonal 10%. Installed estimate always uses net area.
- `material` (string, required): Chosen installed material; one call also compares all eight materials.
- `rooms` (array, required): 1–20 rooms, each 1–5,000 sq ft; total 10–10,000 sq ft. Use length_ft + width_ft OR area_sqft per room.

### `driveway_cost` (~156 tokens)

Driveway Cost Calculator

Estimate driveway replacement costs for a given size. Returns national installed ranges with no published typical figure. One call compares all ten surfaces. Base, drainage and permits are not priced; removal is priced only for an existing concrete driveway. Includes unpriced checks, two separate national reference cards and dated sources. Pure arithmetic, no network or model.

Input parameters:

- `existing` (string): Existing driveway surface. Removal is priced only for existing concrete.
- `sections` (array, required): 1–10 sections, each 1–10,000 sq ft; total 20–10,000 sq ft. Use length_ft + width_ft OR area_sqft per section.
- `surface` (string, required): Chosen installed surface; one call compares all ten surfaces.

### `pole_barn_cost` (~170 tokens)

Pole Barn Cost Calculator

Estimate pole barn construction costs for given dimensions, optionally finished as living space. Returns national construction ranges for the building only, with no published typical figure. Site work/slab/doors/height/permits are not priced. use=residential adds the separate living-space build-out band with an open top and a combined planning estimate. Includes an unpriced checklist, two separate unscaled reference cards and dated sources. Pure arithmetic, no network or model.

Input parameters:

- `length_ft` (number, required): Required length in feet; footprint must be 100–10,000 sq ft.
- `use` (string): shell: building only. residential: add the separate living-space build-out band.
- `width_ft` (number, required): Required width in feet; footprint must be 100–10,000 sq ft.

### `water_softener_size` (~348 tokens)

Water Softener Size Calculator

Size a water softener from household water use and tested hardness, with yearly salt cost. Gallons per person per day is required (no national default used), for softened water only. Iron is optional; unknown when absent, and changes the setting per EcoPure's clear-water ferrous iron rule (5 gpg per ppm); other makers differ. Returns grains per day, working capacity before reserve, optional paired model ratings, three idealized EP42 test-rating examples, notes, assumptions and dated primary sources. Costs are salt only. Pure Decimal arithmetic, no network or model.

Input parameters:

- `bag_lb` (number): Bag weight in lb.
- `bag_price` (number): Price per bag; one store's price (Fleet Farm, observed 2 Oct 2026); enter yours.
- `capacity_grains` (number): Your manual's grains per regeneration; requires salt_lb.
- `gallons_per_person_day` (number, required): Required softened gallons per person per day; no national default used. Exclude bypassing outdoor taps.
- `hardness` (number, required): Required measured hardness; after conversion 0 < gpg <= 100.
- `hardness_unit` (string): gpg or mg/L; divide mg/L by 17.1 (W1).
- `interval_days` (number): Optional target days between regenerations.
- `iron_ppm` (number): Optional dissolved clear-water ferrous iron in ppm; absent means unknown. EcoPure adds 5 gpg per ppm (W4); other makers differ.
- `people` (integer, required): Required whole household size.
- `salt_lb` (number): Your manual's lb salt at capacity_grains; requires capacity_grains.

### `yard_drainage_cause` (~590 tokens)

Yard Drainage Cause Finder

Find likely causes of water pooling in a yard, fix options, who does them and dated public cost estimates. Returns likely causes to investigate, not a diagnosis, with explainable observed-code rules, safety escalations, options and who does them. Prices are dated public planning estimates, with distinct scopes and source years; no 2026 price adjustment. Omit unknown groups; [] means none observed. Optional numbers price only agreed areas, designed storage or counted downspout sets; the soil check screens root-zone drainage. No network or model. Web and MCP share the free daily allowance.

Input parameters:

- `boundary` (array): Omit for unknown; [] means none observed. flow_from_higher_ground: Flow from higher ground; new_nearby_hard_surface: A new nearby hard surface
- `downspouts` (integer): Whole number of elbow-plus-extension sets, hardware only.
- `drop_inches_15min` (number): Inches dropped in 15 minutes after pre-wetting and refilling the hole; Iowa State's informal root-zone check, not a dry-well design test.
- `dry_well_cubic_ft` (number): Designed storage from a designer; never sized from this questionnaire.
- `grading` (array): Omit for unknown; [] means none observed. slopes_toward_house: Ground slopes toward the house; settled_low_spot: A settled low spot; blocked_swale: A blocked swale; new_hard_surface: A new hard surfa…
- `groundwater` (array): Omit for unknown; [] means none observed. seepage: Seepage; saturated_below_surface: Saturated below the surface; seasonal_high_water: Seasonal high water
- `gutters` (array): Omit for unknown; [] means none observed. overflowing: Overflowing gutters; leaking: Leaking gutters; discharge_near_foundation: Downspouts discharge near the foundation
- `rain_garden_sq_ft` (number): Agreed garden area; never computed from roof area.
- `site` (array): Omit for unknown; [] means none observed. lower_outlet: A working lower outlet; utilities_in_area: Utilities in the area; septic_or_well_nearby: A septic system or well nearby; water_entering_house:…
- `soil` (array): Omit for unknown; [] means none observed. clay: Clay soil; compacted: Compacted soil
- `timing` (array): Omit for unknown; [] means none observed. after_rain: After rain; seasonal: Seasonally; dry_weather: In dry weather
- `where` (array): Omit for unknown; [] means none observed. foundation: At the foundation; lawn_low_spot: A lawn low spot; slope_bottom: At the bottom of a slope; whole_yard: Across the whole yard

### `funeral_cost` (~181 tokens)

Funeral Cost Planner and Your Rights

Show funeral consumer rights, national burial and cremation reference costs, and add up a funeral home's itemized prices. Returns FTC Funeral Rule rights first. Reference figures are NFDA 2023 national medians from an industry member survey, not local prices. Bundle cards apply only to services with viewing; direct services have no citable national bundle figure. The worksheet adds up the family's own itemized prices and keeps missing prices visible. Pure rules and Decimal money, no network or model. Web and MCP share the free daily allowance.

Input parameters:

- `disposition` (string, required)
- `prices` (object): Your own itemized prices in dollars. Omit an unknown price; 0 means not buying or included elsewhere.
- `service` (string, required): Direct means immediate burial or direct cremation, without viewing.
- `vault` (string): Burial only; omit when unknown.

### `furnace_age` (~255 tokens)

Furnace Age Calculator

Estimate furnace manufacture age from a confirmed Lennox legacy, Rheem or Nordyne serial format or a maker-confirmed date. Calculates age at your selected as-of date, keeps NAHB and InterNACHI life guidance separate, applies EPA age guidance and the DOE repair comparison to your own quotes, and returns separately labeled historical and modeled replacement references.

Input parameters:

- `as_of` (string, required): Required real YYYY-MM-DD date for the age calculation.
- `brand` (string): Lennox, Rheem or Nordyne; other brands require maker/dealer confirmation.
- `century` (integer): Maker/dealer-confirmed century; never inferred from age.
- `format_confirmed` (boolean): True only after confirming this model/era uses the documented serial format.
- `manufacture_date` (string): Optional maker-confirmed YYYY-MM-DD manufacture date; overrides serial decoding, not installation date.
- `model` (string): Model from the rating plate; retained for identification.
- `repair_quote` (number): Your own comparable repair quote in dollars; pair with replacement_quote.
- `replacement_quote` (number): Your own comparable replacement quote in dollars; pair with repair_quote.
- `serial` (string): Rating-plate serial, supported nomenclature only.

### `roof_replacement_cost` (~291 tokens)

Roof Replacement Cost Calculator

Estimate sloped roof area and roofing squares from a measured footprint and pitch. Calculates optional shingle purchase allowance, historical asphalt installation and matched removal scenarios, verified historical standing-seam bid endpoints, and a benchmark subtotal with your separately quoted extras; missing local prices remain get a local quote.

Input parameters:

- `footprint_sqft` (number): Horizontal roof projection including overhangs, in square feet for footprint_sqft, feet for length_ft/width_ft. Provide footprint OR both dimensions.
- `layers` (integer): Asphalt removal layers; 0 means no removal. Metal rates do not vary with layers; only 0 or 1 supported.
- `length_ft` (number): Horizontal roof projection including overhangs, in square feet for footprint_sqft, feet for length_ft/width_ft. Provide footprint OR both dimensions.
- `material` (string, required)
- `pitch` (number, required): Rise p in inches per 12 inches horizontal run; geometry only.
- `quoted_extras` (number): Your own total dollars quote for separate items excluded from the installation/removal scope; no assumed surcharge.
- `waste_percent` (number): Optional asphalt purchase allowance only. Not applied to installed bid rates. No sourced midpoint/default.
- `width_ft` (number): Horizontal roof projection including overhangs, in square feet for footprint_sqft, feet for length_ft/width_ft. Provide footprint OR both dimensions.

### `fence_cost` (~165 tokens)

Fence Cost Calculator

Estimate fence and gate costs from net non-gate length and gate widths. Returns calculated low, median bid and high bounds from exact City of Sunrise FL 2020 municipal bid rows, their scope and sources, and local permit guidance. Historical public bid observations are not current homeowner prices.

Input parameters:

- `fence_type` (string, required): Exact documented material and height row; no interpolation.
- `gate_type` (string): Exact documented gate material and height for all entered widths; local_quote for unsupported gates.
- `gate_widths_ft` (array): Each gate width in feet, not a gate count. GET: comma-separated widths; omitted means no gates.
- `net_length_ft` (number, required): Net non-gate fence length in feet. Gate openings already excluded; do not subtract them again.

### `wheelchair_ramp` (~93 tokens)

Wheelchair Ramp Calculator

Plan wheelchair ramp length from entrance rise. Returns the minimum horizontal run under ADA 2010 §405.2, cited width, landing, rise-per-run and handrail dimensions, and separate historical HUD accessibility cost cards with missing price cells visible. This is a planning guide, not a code inspection.

Input parameters:

- `rise_inches` (number, required): Entrance rise in inches; minimum horizontal run excludes landings and door maneuvering space.

### `pickleball_court_cost` (~207 tokens)

Pickleball Court Cost and Size Planner

Check whether a pickleball court fits a space and show public court project costs. Returns rulebook footprints and one-court fit in either orientation, separate cost cards, and unpriced scope. Cost cards are public city project and planning figures, not a price for this court. Pure rules and Decimal, no network, model or clock. Web and MCP share the free daily allowance.

Input parameters:

- `base` (string): Omit when unknown.
- `courts` (integer): Court count; omitted uses 1 for math, marked assumed.
- `fence` (string): Omit when unknown.
- `finish` (string): Omit when unknown.
- `lights` (string): Omit when unknown.
- `size` (string): Omit when unknown.
- `space_length_ft` (number): Open, level space in feet; provide both length and width or neither.
- `space_width_ft` (number): Open, level space in feet; provide both length and width or neither.

### `ev_charger_install_cost` (~280 tokens)

EV Charger Installation Planner

Work out the circuit a home EV charger needs, panel triage, utility install cost references and federal credit rules. Returns safety first, the exact 125% minimum breaker calculation, panel triage, unpriced extras and dated federal 30C rules. Reference cards are utility and DOE program figures, not a price for this home. A licensed electrician and permit are needed; confirm local requirements and inspection. Pure rules and Decimal, no network, model or clock. Web and MCP share the free daily allowance.

Input parameters:

- `capacity_check` (string): Electrician load calculation result; not_done means not assessed.
- `charger_amps` (number): Rated or installer-set maximum charging current in amps.
- `existing_circuit` (string): Suitable dedicated circuit already at the parking spot.
- `extras` (array)
- `installed_on` (string): Placed-in-service date YYYY-MM-DD; omitted follows the after-2026-06-30 rule.
- `level` (string): Charging level; omit when unknown.
- `panel_amps` (integer): Panel/service rating, echoed only; a panel label alone cannot decide an upgrade or price the job.
- `run_feet` (number): Estimated routed panel-to-charger length, not straight-line distance.
- `spare_space` (string): Compatible breaker space for a new circuit.

### `epoch_convert` (~233 tokens)

Unix Epoch Converter

Convert between Unix timestamps and dates. Converts a Unix timestamp (seconds or milliseconds, detected by size) or an ISO 8601 date string to epoch seconds, epoch milliseconds, an ISO UTC time, the same moment in an optional IANA time zone, and the weekday there. A date string with no offset is read in the given zone, UTC by default. Pure standard-library rules, no network, model or clock.

Input parameters:

- `tz` (string): Optional IANA time zone name such as America/New_York. Default UTC. Used for iso_in_tz and weekday, and as the zone of a date string that has no offset of its own.
- `unit` (string): Optional. Force a numeric value to be read as seconds (s) or milliseconds (ms) instead of auto-detecting.
- `value` (required): Required. A Unix timestamp (number or digits; seconds or milliseconds are detected by size) or an ISO 8601 date or date-time string such as 2024-03-10 or 2024-03-10T14:30:00-05:00.

### `har_to_openapi` (~266 tokens)

HAR to OpenAPI Converter

Turn a HAR file (a browser network export) into an OpenAPI 3.1 description of the API calls in it. Cleans the file first: drops cookies and login headers and replaces secret-named headers, query parameters, form fields and JSON keys with REDACTED. Groups calls by host, method and path template (numeric ids, UUIDs and long hex or base64 path parts become parameters), and infers query parameters, request body schemas and response schemas per status from the samples. Sign-in methods are named, never copied; example values are off unless asked for. Leaves out page loads, static files and preflights unless asked. Returns the OpenAPI document as JSON and the endpoint count. Pure standard library, no network, model or clock.

Input parameters:

- `examples` (boolean): Add example values from the cleaned file to parameters and bodies. Default false.
- `har` (string, required): Required. The HAR file's JSON text (a browser network export), at most 2,000,000 characters.
- `host` (string): Only describe calls to this host, such as api.example.com.
- `include_static` (boolean): Also describe page loads, images, scripts, styles, fonts, media and CORS preflights. Default false.

### `inspect_binary` (~240 tokens)

Binary Inspector

Read the structure of a program file: Windows PE (EXE or DLL, 32 or 64-bit), Linux ELF or Mac Mach-O (thin or universal), given as base64, at most 2,000,000 bytes. Returns the format, type, architecture, bitness and entry point; sections with file offset, size, address, access flags and entropy (bits per byte); imports per library and exports; PE resources, whether a PE certificate table or Mach-O code signature is present (never checked) and whether the file is a .NET assembly. Reads headers and tables only; runs nothing. Pure standard library, no network or model.

Input parameters:

- `arch` (string): For a Mac universal binary: the architecture to describe, such as ARM64 or x86-64. Default: the first one.
- `file` (string, required): Required. The program file (Windows EXE or DLL, Linux ELF, or Mac Mach-O), as base64 or a base64 data URL; at most 2,000,000 bytes once decoded.
- `filename` (string): Optional file name, used only in the result text.

### `extract_strings` (~318 tokens)

Strings Extractor

List the readable text inside any file, given as base64, at most 2,000,000 bytes: runs of ASCII and UTF-16LE characters (UTF-8 on request) at least min_length long, with byte offsets. Labels each string by shape as a URL, email, IP address, file path, key or token, or other, and counts every kind across the whole file; the list can be narrowed by kind or text and holds up to 2,000 strings in file order. Pure standard library, no network or model.

Input parameters:

- `contains` (string): Only list strings containing this text (any case).
- `encodings` (array): Which text to look for: ascii, utf-16le and utf-8. Default ascii and utf-16le; utf-8 also reads accented and other non-English letters, and finds more false text in random bytes.
- `file` (string, required): Required. Any file, as base64 or a base64 data URL; at most 2,000,000 bytes once decoded.
- `filename` (string): Optional file name, used only in the result text.
- `kinds` (array): Only list strings of these kinds (url, email, ip, path, key, other). Counts always cover all.
- `limit` (integer): Most strings to list, in file order. Default and maximum 2,000.
- `min_length` (integer): Shortest run of characters to keep, 3 to 32. Default 4.

### `inspect_apk` (~200 tokens)

APK Inspector

Read an Android app file (.apk), given as base64, at most 2,000,000 bytes. Returns the package name, version, minimum, target and compile SDK; permissions grouped by what they reach, each with a plain meaning and whether Android asks the person first; activities, services, receivers and providers with whether each is exported and why; web addresses and hostnames found in the code's string tables, grouped by host; and the signer certificate (subject, issuer, validity, key, SHA-256) from the v1 signature or the v2/v3 signing block, read but never verified. Runs nothing. Pure standard library, no network or model.

Input parameters:

- `file` (string, required): Required. The Android app file (.apk), as base64 or a base64 data URL; at most 2,000,000 bytes once decoded.
- `filename` (string): Optional file name, used only in the result text.

### `read_barcode` (~153 tokens)

Barcode scanner

Read every barcode in a PNG, JPEG or WebP image, given as base64 (or a data URL), a public https URL, or an attached file. At most 2 MB and 4000 by 4000 pixels. Returns text, format, corner positions and GS1 product number, expiry and lot when present.

Input parameters:

- `file` (object): An image file the user attached (OpenAI Apps SDK file parameter).
- `image` (string): Base64 PNG/JPEG/WebP or image data URL; 2 MB decoded maximum. Give one of image, url or file.
- `url` (string): Public https URL of a PNG, JPEG or WebP image; 2 MB maximum.

### `make_barcode` (~85 tokens)

Barcode generator

Make an SVG barcode. Validates retail check digits and lengths. GS1-128 and GS1 DataMatrix accept bracketed (01)GTIN(17)YYMMDD(10)lot; use make_qr for QR codes.

Input parameters:

- `format` (string)
- `text` (string, required): Text to encode; at most 1024 UTF-8 bytes.

### `make_run_loop` (~153 tokens)

Run Loop Maker

Make walking/running loops that start and end at one point, each within 3% of the target distance. Returns Google Maps links and an encoded polyline. Routes and map data © OpenStreetMap contributors (ODbL); each result credits the routing service that made it.

Input parameters:

- `avoid_crime` (boolean): Steer round blocks with more reported crime than the start (city police reports, last 12 months; San Francisco and Seattle for now). Not a guarantee.
- `count` (integer)
- `direction` (string)
- `distance_km` (number, required)
- `prefer` (array)
- `start` (required)
- `stops` (array)
- `via`

### `company_facts` (~100 tokens)

Company Info Finder

Read a business's own home, about and contact pages and return its name, address, phone, email, founding year and what it does, each with the page it came from. Page text goes to a language model: with no key, a small shared free daily allowance (Google Gemini); with an X-OpenRouter-Key header, the caller's OpenRouter key.

Input parameters:

- `url` (string, required): The business's public http or https homepage URL.

### `proofread` (~78 tokens)

Proofreader

Fix spelling, grammar, punctuation and word choice while keeping meaning and voice. Text goes to a language model: with no key, a small shared daily allowance (Google Gemini); with an X-OpenRouter-Key header, the caller's OpenRouter key.

Input parameters:

- `text` (string, required): Text to proofread, at most 2,000 words.

### `apa_citation_generator` (~167 tokens)

APA Citation Generator

Format an APA reference and in-text citations from entered source metadata.

Input parameters:

- `authors` (array)
- `bookTitle` (string)
- `changing` (boolean)
- `date` (string)
- `doi` (string)
- `edition` (string)
- `editors` (array)
- `issue` (string)
- `journal` (string)
- `pages` (string)
- `platform` (string)
- `publisher` (string)
- `reportNumber` (string)
- `retrieved` (string)
- `sentenceCase` (boolean)
- `siteName` (string)
- `title` (string, required)
- `type` (string, required)
- `url` (string)
- `volume` (string)

### `bmi_calculator` (~64 tokens)

BMI Calculator

Calculate adult BMI and its band from weight, height and units.

Input parameters:

- `height` (number, required): Metres (metric) or total inches (imperial)
- `units` (string)
- `weight` (number, required): Kilograms (metric) or pounds (imperial)

### `body_fat_calculator` (~83 tokens)

Body Fat Calculator

Calculate Navy body fat percentage from sex and tape measurements.

Input parameters:

- `abdomen` (number): Male abdomen circumference
- `height` (number, required): Height
- `hip` (number): Female hip circumference
- `neck` (number, required): Neck circumference
- `sex` (string, required)
- `units` (string)
- `waist` (number): Female waist circumference

### `calorie_calculator` (~120 tokens)

Calorie and Macro Calculator

Calculate resting energy and daily calories from adult measurements, formula and activity level.

Input parameters:

- `activity` (number)
- `age` (number, required): Adult age in years
- `bodyFat` (number): Body fat percentage
- `feet` (integer): Imperial height in whole feet
- `height` (number): Metric height in centimetres
- `inches` (number): Imperial additional inches
- `method` (string)
- `sex` (string, required)
- `units` (string)
- `weight` (number, required): kg or lb by units

### `character_count` (~30 tokens)

Character counter

Count Unicode characters, words, lines and UTF-8 bytes from text.

Input parameters:

- `text` (string, required)

### `concrete_calculator` (~185 tokens)

Concrete Calculator

Computes slab, footing, cylindrical-column or solid-step concrete volume, waste allowance and whole 40/60/80 lb bag counts from QUIKRETE No. 1101 yields.

Input parameters:

- `count` (integer): Identical project count; default 1.
- `diameter` (number): Column diameter in the common length unit.
- `height` (number): Perpendicular height.
- `length` (number): Base length.
- `rise` (number): Rise per step.
- `run` (number): Run per step.
- `shape` (string, required): Rectangular slab or footing, cylindrical column, or solid equal-rise/run steps.
- `steps` (integer): Step count.
- `unit` (string): Common length unit for every entered dimension; default ft.
- `waste` (number): Waste percentage; default 10.
- `width` (number): Base width.

### `decimal_to_fraction` (~68 tokens)

Decimal to Fraction

Converts a terminating or explicitly repeating decimal to an exact simplified fraction, mixed number and decimal display.

Input parameters:

- `decimal` (string, required): Decimal: 0.125, 0.(3), 0.1(6), or combining bars on repeating digits. With ... every entered fractional digit repeats.

### `font_generator` (~31 tokens)

Fancy font generator

Convert text to a selected Unicode letter style.

Input parameters:

- `style` (string, required)
- `text` (string, required)

### `fraction_calculator` (~78 tokens)

Fraction Calculator

Computes exact addition, subtraction, multiplication or division of fractions and mixed numbers, with simplified, mixed and decimal forms.

Input parameters:

- `a` (string, required): First integer, fraction, decimal or signed mixed number.
- `b` (string, required): Second integer, fraction, decimal or signed mixed number.
- `operation` (string): Arithmetic operation; default +.

### `gpa_calculator` (~79 tokens)

GPA Calculator

Computes credit-weighted GPA with A=4, B=3, C=2, D=1, F=0 and optional common honors +0.5/AP +1.0 bonuses for passing grades; school conventions vary.

Input parameters:

- `courses` (array, required)
- `weighted` (boolean): Apply the stated weighting convention; default false.

### `grade_calculator` (~61 tokens)

Grade Calculator

Computes a weighted category average and optionally the final-exam percentage needed to reach a target course grade.

Input parameters:

- `categories` (array, required)
- `finalWeight` (number): Final exam percentage of the full course.
- `target` (number): Target course percentage.

### `heart_rate_zones` (~73 tokens)

Heart-Rate Zone Calculator

Calculate adult maximum heart rate and moderate and vigorous target zones from age and optional measured rates.

Input parameters:

- `age` (number, required): Adult age in years
- `measuredMax` (number): Measured maximum bpm
- `method` (string)
- `resting` (number): Resting bpm; must be below maximum

### `json_formatter` (~49 tokens)

JSON formatter and validator

Format, minify or validate JSON text while preserving number tokens.

Input parameters:

- `action` (string)
- `indent` (string)
- `sort` (boolean)
- `text` (string, required)

### `one_rep_max_calculator` (~69 tokens)

One-Rep Max Calculator

Calculate Epley and Brzycki one-rep maximum estimates from lifted weight and repetitions.

Input parameters:

- `reps` (integer, required)
- `units` (string): Weight unit; returned estimates have the same unit
- `weight` (number, required): Lifted weight; results use the same unit

### `pace_calculator` (~89 tokens)

Running Pace Calculator

Calculate running distance, elapsed time or pace from exactly two values and distance units.

Input parameters:

- `distance` (number): Distance in selected units
- `pace` (string): Pace in minutes, M:SS or H:MM:SS per selected distance unit
- `time` (string): Elapsed time in minutes, M:SS or H:MM:SS
- `units` (string)

### `square_footage_calculator` (~56 tokens)

Square Footage Calculator

Computes and sums rectangle, circle, triangle and L-shaped room areas in square feet and square metres.

Input parameters:

- `rooms` (array, required)
- `unit` (string): Common length unit for every entered dimension; default ft.

### `volume_calculator` (~112 tokens)

Volume Calculator

Computes cube, box, cylinder, cone, sphere or rectangular-pyramid volume with its formula and cubic-unit conversions.

Input parameters:

- `height` (number): Perpendicular height.
- `length` (number): Base length.
- `radius` (number): Radius, not diameter.
- `shape` (string, required): Solid shape; pyramid has a rectangular base.
- `side` (number): Cube side.
- `unit` (string): Common length unit for every entered dimension; default ft.
- `width` (number): Base width.

### `word_count` (~32 tokens)

Word counter

Count words, characters, sentences and paragraphs and estimate reading and speaking times from text.

Input parameters:

- `text` (string, required)

### `date_calculator` (~161 tokens)

Date Calculator

Count signed calendar days or weekdays between dates, or add and subtract calendar units with month-end clamping.

Input parameters:

- `amount` (integer): Signed whole calendar units; negative subtracts
- `date` (string): Gregorian calendar date YYYY-MM-DD, years 0001–9999
- `end` (string): Gregorian calendar date YYYY-MM-DD, years 0001–9999
- `inclusive` (boolean): Count both endpoints; default excludes earlier endpoint and includes later endpoint
- `mode` (string, required): Operation
- `start` (string): Gregorian calendar date YYYY-MM-DD, years 0001–9999
- `unit` (string): Calendar unit
- `weekdaysOnly` (boolean): Count Monday–Friday only; holidays are included

### `hours_calculator` (~97 tokens)

Hours Calculator

Calculate worked minutes, decimal hours and H:MM from clock times, an overnight flag and an unpaid break.

Input parameters:

- `breakMinutes` (integer): Unpaid break in whole minutes
- `end` (string, required): End clock time HH:MM (24-hour)
- `overnight` (boolean): End is on the next day; shift at most 24 hours
- `start` (string, required): Start clock time HH:MM (24-hour)

### `time_card_calculator` (~70 tokens)

Time Card Calculator

Sum up to seven clock-time shifts and optionally split the total into regular minutes and minutes past 40 hours.

Input parameters:

- `overtime` (boolean): Split minutes past 40 hours; arithmetic only, without eligibility or pay
- `rows` (array, required): Completed shifts for one workweek; omit blank days

### `percentage_calculator` (~89 tokens)

Percentage Calculator

Calculate X percent of Y, X as a percentage of Y, or signed percentage change from X to Y.

Input parameters:

- `mode` (string, required): of: X% of Y; is: X is what % of Y; change: from X to Y
- `x` (number, required): Percentage, part, or original value by mode
- `y` (number, required): Whole or new value by mode

### `tip_calculator` (~99 tokens)

Tip Calculator

Calculate a bill tip and equal per-person shares, with cent rounding or optional whole-dollar rounding up.

Input parameters:

- `bill` (number, required): Bill base in USD, at most two decimals
- `people` (integer): Number of equal shares; default 1
- `roundUp` (boolean): Round each share up to a whole dollar; otherwise up to a cent
- `tipPercent` (number, required): Entered tip percentage, at most two decimals

### `ratio_calculator` (~109 tokens)

Ratio Calculator

Simplify decimal A:B ratios, solve A:B = C:?, or scale the ratio to a target term or total.

Input parameters:

- `a` (number, required): Nonnegative A term
- `b` (number, required): Nonnegative B term
- `c` (number): Known C term in C:?
- `mode` (string, required): Operation
- `target` (number): Target amount in the same units as A and B
- `targetPart` (string): Part assigned the target; default a

### `compound_interest_calculator` (~195 tokens)

Compound Interest Calculator

Calculate compound or simple interest, balance, total contributed, interest earned, modeled APY and yearly balances from principal, nominal rate, term and deposit timing.

Input parameters:

- `annualRate` (number, required): Nominal annual rate / APR (%)
- `compoundingPerYear` (integer): Equal compounding periods per year, default 12
- `contribution` (number): Recurring deposit per complete monthly/yearly period; default 0; simple mode requires 0 (USD; at most two decimal places)
- `contributionFrequency` (string): Deposit interval, default monthly; fractional intervals have no deposit
- `contributionTiming` (string): Deposit at start or end of each complete period; default end
- `mode` (string): Interest calculation; default compound
- `principal` (number, required): Initial principal (USD; at most two decimal places)
- `years` (number, required): Term in years; a fractional tail earns modeled interest

### `margin_calculator` (~98 tokens)

Margin Calculator

Calculate cost, selling price, gross profit, margin percentage and markup percentage from two independent values including cost or price.

Input parameters:

- `cost` (number): Cost per item (USD; at most two decimal places)
- `marginPercent` (number): Gross margin as percent of selling price
- `markupPercent` (number): Markup as percent of cost
- `price` (number): Selling price per item (USD; at most two decimal places)

### `discount_calculator` (~99 tokens)

Discount Calculator

Calculate a discounted price, ordered stacked percentage discounts, savings, effective discount and total with an entered sales tax percentage after discounts.

Input parameters:

- `discounts` (array, required): Percent-off values applied to the remaining price in order; final price rounds to cents
- `price` (number, required): Original price (USD; at most two decimal places)
- `salesTaxPercent` (number): Entered tax percentage applied after discounts to the cent-rounded price; default 0

### `gcf_calculator` (~66 tokens)

GCF Calculator

Compute the greatest common factor of 2–20 integers with exact BigInt arithmetic and complete prime factorizations.

Input parameters:

- `integers` (array, required): 2–20 unitless signed decimal integer strings, each at most ±10^12. Each is fully prime-factored.

### `lcm_calculator` (~66 tokens)

LCM Calculator

Compute the least common multiple of 2–20 integers with exact BigInt arithmetic and complete prime factorizations.

Input parameters:

- `integers` (array, required): 2–20 unitless signed decimal integer strings, each at most ±10^12. Each is fully prime-factored.

### `prime_number_checker` (~118 tokens)

Prime Number Checker

Compute deterministic primality below 3.3 × 10^24 using the 13 prime Miller–Rabin bases through 41, plus complete factorization through 10^12 or a smallest factor through 10000.

Input parameters:

- `integer` (string, required): Nonnegative decimal digits, 0 <= n < 3300000000000000000000000 (3.3 × 10^24), at most 25 digits. Full composite factorization through 10^12; otherwise smallest prime factor search through 10000 only.

### `slope_calculator` (~148 tokens)

Slope Calculator

Compute slope, y-intercept, slope-intercept and point-slope equations, distance, midpoint and line inclination from two distinct points, including vertical lines.

Input parameters:

- `unit` (string): Common length unit for every coordinate or side; area uses its square.
- `x1` (number, required): x1 coordinate, in the common length unit (±10^9).
- `x2` (number, required): x2 coordinate, in the common length unit (±10^9).
- `y1` (number, required): y1 coordinate, in the common length unit (±10^9).
- `y2` (number, required): y2 coordinate, in the common length unit (±10^9).

### `pythagorean_theorem_calculator` (~141 tokens)

Pythagorean Theorem Calculator

Compute the third right-triangle side from exactly two measured sides, both acute angles, the right angle and area using the Pythagorean theorem.

Input parameters:

- `a` (number): Leg a in the common length unit (10^-9 to 10^9).
- `b` (number): Leg b in the common length unit (10^-9 to 10^9).
- `hypotenuse` (number): Hypotenuse, opposite the right angle in the common length unit (10^-9 to 10^9).
- `unit` (string): Common length unit for every coordinate or side; area uses its square.

### `average_calculator` (~78 tokens)

Average Calculator

Compute mean, median, modes, range, sum, count, population and sample standard deviation, plus an optional separately weighted average.

Input parameters:

- `values` (array, required): 1–1000 finite values in a common unit.
- `weights` (array): Optional one weight per value; at least one positive weight. Weights affect only weightedAverage.

### `gravel_calculator` (~168 tokens)

Gravel Calculator

Calculate gravel layer volume and US short tons from rectangle dimensions, circle diameter or total area, depth in inches and editable bulk density.

Input parameters:

- `area` (number): Total bed area in square feet or square metres
- `densityTonsPerCubicYard` (number): Bulk density in US short tons (2000 lb) per cubic yard; default 1.4
- `depthInches` (number, required): Layer depth in inches
- `diameter` (number): Circle diameter across the bed in selected unit
- `length` (number): Rectangle length in selected unit
- `shape` (string, required): Bed shape or already measured total area
- `unit` (string): Dimension unit; area uses its square; default ft
- `width` (number): Rectangle width in selected unit

### `mulch_calculator` (~139 tokens)

Mulch Calculator

Calculate mulch layer volume and whole 2 cu ft and 3 cu ft bag counts from rectangle dimensions, circle diameter or total area and depth in inches.

Input parameters:

- `area` (number): Total bed area in square feet or square metres
- `depthInches` (number, required): Layer depth in inches
- `diameter` (number): Circle diameter across the bed in selected unit
- `length` (number): Rectangle length in selected unit
- `shape` (string, required): Bed shape or already measured total area
- `unit` (string): Dimension unit; area uses its square; default ft
- `width` (number): Rectangle width in selected unit

### `inflation_calculator` (~101 tokens)

Inflation Calculator

Convert US dollars between published BLS CPI-U months or annual averages since 1913. Reports equivalent value, cumulative inflation, average annual rate and yearly table. Omit both months for annual mode; unavailable periods are rejected. Arithmetic on CPI, not financial advice.

Input parameters:

- `amount` (number, required)
- `endMonth` (integer)
- `endYear` (integer, required)
- `startMonth` (integer)
- `startYear` (integer, required)

### `unit_convert` (~159 tokens)

Unit Converter

Convert a bounded decimal or fraction quantity between explicit compatible mass, volume, international length, speed or item-count units. Reject incompatible dimensions; no density is inferred.

Input parameters:

- `from` (string, required): Explicit source or target unit. mm is millimeters; oz_av is avoirdupois mass; us_fl_oz is volume. US customary volume measures only.
- `to` (string, required): Target unit in the same dimension. International length definitions and US liquid measures are explicit.
- `value` (string, required): Nonnegative decimal (up to 24 digits, effective exponent ±24), fraction (1/2) or mixed fraction (1 1/2). Quantity and integer fraction components ≤10^12; denominator >0; proper fractional part for mi…

### `scientific_evaluate` (~76 tokens)

Scientific Calculator

Evaluate arithmetic, powers, roots, logs and trigonometric functions with parentheses. Choose degrees or radians and get finite real results.

Input parameters:

- `angleUnit` (string): Angle mode for trig and inverse trig; default degrees.
- `expression` (string, required): Explicit arithmetic expression; 256 tokens, 64 nested operations. No implicit multiplication.

### `quadratic_solve` (~107 tokens)

Quadratic Formula Calculator

Solve ax² + bx + c = 0 from entered coefficients. See real or complex roots, the discriminant and linear or constant cases.

Input parameters:

- `a` (number, required): Coefficient; zero or absolute magnitude 10^-12 to 10^12.
- `b` (number, required): Coefficient; zero or absolute magnitude 10^-12 to 10^12.
- `c` (number, required): Coefficient; zero or absolute magnitude 10^-12 to 10^12.

### `pay_convert` (~86 tokens)

Pay Rate Converter

Convert gross annual salary to hourly pay or hourly pay to annual salary using your entered weekly hours and paid weeks. Pure arithmetic.

Input parameters:

- `amount` (number, required): Gross amount in one entered currency.
- `direction` (string): Conversion direction; default annual-to-hourly.
- `hoursPerWeek` (number, required): Paid hours per week.
- `paidWeeks` (number, required): Paid weeks per year.

### `long_divide` (~87 tokens)

Long Division Calculator

Divide decimal strings exactly with long division steps, an integer quotient and remainder. See terminating, repeating or truncated decimals.

Input parameters:

- `digits` (integer): Maximum fractional digits before truncation; default 20.
- `dividend` (string, required): Signed plain decimal, no exponent; maximum 60 characters.
- `divisor` (string, required): Nonzero signed plain decimal, no exponent; maximum 60 characters.

### `scientific_notation` (~63 tokens)

Scientific Notation Calculator

Normalize decimal strings to scientific notation or expand exponent notation exactly. Keep all entered numerical digits without binary float conversion.

Input parameters:

- `mode` (string): Output focus; default normalize.
- `text` (string, required): Up to 200 decimal digits, exponent -200 through 200.

### `round_decimal` (~96 tokens)

Rounding Calculator

Round decimal strings exactly to decimal places, tens, hundreds or other powers of ten. Choose half away from zero or half even, including negative ties.

Input parameters:

- `places` (integer): Decimal places; negative values round to tens, hundreds etc.; default 0.
- `text` (string, required): Up to 200 decimal digits with optional exponent -200 through 200.
- `tieMode` (string): Exact halfway rule; default half-away.

### `calendar_age_difference` (~78 tokens)

Age Difference Calculator

Calculate years, months, days and total days between two birth dates. Use explicit Gregorian dates and a stated month-end convention.

Input parameters:

- `date1` (string, required): Gregorian date YYYY-MM-DD, years 0001 through 9999.
- `date2` (string, required): Gregorian date YYYY-MM-DD, years 0001 through 9999.

### `julian_day_convert` (~92 tokens)

Julian Date Converter

Convert explicit UTC civil timestamps to Julian day and back using the proleptic Gregorian calendar. See the noon epoch, time-scale convention and ordinal day.

Input parameters:

- `convention` (string): UTC civil approximation to UT1; no leap seconds.
- `direction` (string): Conversion direction; default to-julian.
- `value` (string|number, required): UTC timestamp string, or a numeric JD for reverse conversion.

### `mass_volume_convert` (~183 tokens)

Ingredient Grams and Cups Converter

Convert mass to volume or reverse with named units and either a USDA FoodData Central ingredient cup-weight preset or an entered positive density in g/mL.

Input parameters:

- `density` (number): Custom density in grams per milliliter; exactly one of density or ingredient is required.
- `from` (string, required): Explicit mass or volume source.
- `ingredient` (string): USDA FDC ingredient cup-weight preset, interpreted using a 236.5882365 mL US customary cup. Exactly one of ingredient or density is required.
- `to` (string, required): Opposite dimension from source.
- `value` (string, required): Nonnegative decimal (up to 24 digits, effective exponent ±24), fraction (1/2) or mixed fraction (1 1/2). Quantity and integer fraction components ≤10^12; denominator >0; proper fractional part for mi…

### `board_feet` (~39 tokens)

Board Foot Calculator

Sum board-foot lumber volumes from entered dimensions and whole piece counts, with per-row optional prices and a priced subtotal.

Input parameters:

- `rows` (array, required)

### `paint_quantity` (~233 tokens)

Paint Calculator

Calculate paint volume and whole containers from entered area or supported surface geometry, openings, whole coats and user-supplied per-coat coverage.

Input parameters:

- `area` (string): Total gross surface area in selected squared units. Enter a bounded decimal or fraction string; positive except openings/price.
- `areaUnit` (string): Dimensions unit; areas and coverage use its square. Default ft.
- `coats` (integer, required): Whole coat count.
- `containerVolume` (string, required): Entered volume of one container in selected volume units. Enter a bounded decimal or fraction string; positive except openings/price.
- `coverage` (string, required): Entered per-coat coverage in selected square area units per selected volume unit. Enter a bounded decimal or fraction string; positive except openings/price.
- `openings` (string): Unpainted opening area in the selected squared unit, no greater than gross area. Default 0. Enter a bounded decimal or fraction string; positive except openings/price.
- `surfaces` (array)
- `volumeUnit` (string): Volume unit for paint, coverage denominator and container. Default us_gal.

### `fuel_cost` (~136 tokens)

Fuel Cost Calculator

Calculate trip fuel quantity and cost from entered distance, fuel economy, fuel price and currency; supports US mpg, L/100 km and km/L.

Input parameters:

- `currency` (string, required): Entered three-letter currency label (letters only), shared by all prices; no exchange rates.
- `distance` (number, required): Nonnegative miles for us_mpg; kilometers otherwise.
- `economy` (number, required): Positive US mpg, L/100 km or km/L as selected.
- `price` (number, required): Entered price per US liquid gallon for us_mpg, per liter otherwise.
- `units` (string, required): Unit system; Imperial mpg not accepted.

### `unit_price` (~84 tokens)

Unit Price Calculator

Compare package prices per equal mass, volume or whole item count in one entered currency, with exact tie detection and compatible units only.

Input parameters:

- `currency` (string, required): Entered three-letter currency label (letters only), shared by all prices; no exchange rates.
- `packages` (array, required)
- `targetUnit` (string, required): One common mass, volume or count unit for comparison.

### `loan_schedule` (~206 tokens)

Loan Payment Calculator

Computes fixed-rate monthly principal and interest payments, total interest, payoff month and a complete amortization table of at most 360 rows from entered amounts and a nominal annual rate. Optional down payment reduces principal; extra monthly principal payments shorten the modeled term. Uses exact rational arithmetic and nearest-cent half-up rounding. Taxes, insurance, PMI and fees are excluded.

Input parameters:

- `annualRatePercent` (number, required): Fixed nominal annual interest rate in percent, excluding fees; at most six decimal places.
- `downPayment` (number): USD amount subtracted from principal; must be less than principal; at most two decimal places; defaults to zero.
- `extraMonthly` (number): Extra principal paid each month in USD; at most two decimal places; defaults to zero.
- `principal` (number, required): Starting amount in USD before the optional down payment; at most two decimal places.
- `termMonths` (integer, required): Original or remaining whole-month term. Every period is returned, at most 360 rows.

### `power` (~41 tokens)

Exponent Calculator

Compute a real number raised to an entered exponent with bounded inputs and explicit domain errors.

Input parameters:

- `base` (number, required): Base.
- `exponent` (number, required): Exponent.

### `logarithm` (~48 tokens)

Logarithm Calculator

Compute a logarithm for a positive value and any positive base other than 1.

Input parameters:

- `base` (number, required): Positive logarithm base other than 1.
- `value` (number, required): Value.

### `simplify_sqrt` (~43 tokens)

Square Root Simplifier

Rewrite the square root of an integer from 0 to 10^12 as a√b using exact integer factors.

Input parameters:

- `value` (integer, required): Nonnegative integer.

### `z_score` (~50 tokens)

Z Score Calculator

Compute the standardized z score from an entered value, mean and positive standard deviation.

Input parameters:

- `mean` (number, required): Mean.
- `standardDeviation` (number, required): Standard deviation.
- `value` (number, required): Value.

### `combinations` (~50 tokens)

Combination Calculator

Compute exact combinations nCr or permutations nPr for bounded integer inputs.

Input parameters:

- `mode` (string, required): Counting operation.
- `n` (integer, required): Total items n.
- `r` (integer, required): Selected items r.

### `roi` (~65 tokens)

ROI Calculator

Compute net gain and return on investment percentage from entered cost and final value, with optional annualization.

Input parameters:

- `cost` (number, required): Cost (must be positive).
- `finalValue` (number, required): Final value.
- `years` (number): Optional positive duration in years for annualized ROI.

### `retirement_drawdown` (~160 tokens)

Retirement Income Calculator

Arithmetic on entered numbers only: level end-of-period withdrawal, total withdrawn and complete period table from a balance, fixed entered nominal annual return and term. Monthly, quarterly or annual periods; nearest-cent half-up rounding; final withdrawal clears residue. Rates are entered, never fetched.

Input parameters:

- `annualReturnPercent` (number, required): Entered fixed nominal annual return percentage; at most six decimal places, divided by periods per year.
- `balance` (number, required): Starting balance in USD, at most two decimal places.
- `frequency` (string, required): Withdrawal timing: 12 monthly, 4 quarterly or 1 annual end-of-period withdrawal per year.
- `years` (integer, required): Whole years; at most 360 monthly, 120 quarterly or 30 annual rows.

### `debt_to_income` (~111 tokens)

Debt-to-Income Ratio Calculator

Arithmetic on entered numbers only: sum up to 100 entered monthly debt payments and divide by positive gross monthly income. Shows the sum and ratio percentage, rounded half up to two decimal places, with no comparison bands or classification.

Input parameters:

- `grossMonthlyIncome` (number, required): Gross monthly income before deductions in USD, at most two decimal places.
- `monthlyDebts` (array, required): Entered monthly payments, not debt balances. Empty array means zero payments. The sum must be at most USD 100000000.

### `base_convert` (~162 tokens)

Decimal to Hex Converter

Converts a bounded integer string between bases 2 through 36 using exact BigInt arithmetic. Inputs contain 1–4096 digits and must be valid in the source base. Optional bitWidth (1–4096) validates a bit pattern; signed=true requires a width and reads the source value as two’s complement. Unsigned is the default.

Input parameters:

- `bitWidth` (integer): Optional bit width; required when signed is true.
- `fromBase` (integer, required)
- `signed` (boolean): Defaults to false. When true, interpret the fitting source bit pattern as two’s complement.
- `toBase` (integer, required)
- `value` (string, required): Digits 0–9/A–Z without prefix, sign or separators; valid in fromBase.

### `roman_numeral` (~77 tokens)

Roman Numeral Converter

Convert whole numbers from 1 to 3999 to canonical Roman numerals, or convert canonical Roman numerals to numbers.

Input parameters:

- `direction` (string, required): Conversion direction.
- `value` (string, required): Decimal whole-number text from 1–3999 for to_roman, or Roman numeral text in either case for from_roman.

### `round_sig_figs` (~66 tokens)

Significant Figures Converter

Round a decimal string to a chosen number of significant figures using exact decimal half-up rounding; return plain and scientific notation.

Input parameters:

- `significantFigures` (integer, required): Number of significant figures to keep.
- `value` (string, required): Signed decimal string, optionally with exponent notation; no commas.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/cowerxdev-apitoolcalls/apitoolcalls-2#diagnostics

## Score history

- 2026-11-05: 84
- 2026-11-04: 84
- 2026-11-03: 84
- 2026-11-02: 83
- 2026-11-01: 83
- 2026-10-31: 82
- 2026-10-30: 82
- 2026-10-29: 81
- 2026-10-28: 81
- 2026-10-27: 80
- 2026-10-26: 80
- 2026-10-25: 79
- 2026-10-24: 79
- 2026-10-23: 78
- 2026-10-22: 78
- 2026-10-21: 78
- 2026-10-20: 77
- 2026-10-19: 77
- 2026-10-18: 76
- 2026-10-17: 76
- 2026-10-16: 75
- 2026-10-15: 75
- 2026-10-14: 74
- 2026-10-13: 74
- 2026-10-12: 74
- 2026-10-11: 73
- 2026-10-10: 72
- 2026-10-07: 71
- 2026-10-05: 59
- 2026-10-04: 60

## Common questions

### What is the API Tool Calls MCP server?

API Tool Calls is an MCP server listed in the public MCP registry as io.github.cowerxdev/apitoolcalls. 94 tools, one small door: home costs, fitness, QR, barcodes, Markdown, SEO, recalls. This page covers its hosted endpoint (https://apitoolcalls.com/mcp?tools=all).

### Is the API Tool Calls MCP server safe to use?

API Tool Calls scores 84 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the API Tool Calls MCP server expose?

API Tool Calls exposes 94 tools: make_qr, get_transcript, resume_gap, page_to_markdown, seo_check, and 89 more. Their descriptions and schemas cost roughly 12,217 tokens of context every time the server is loaded.

### Does the API Tool Calls MCP server require authentication?

No. We connected to API Tool Calls without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the API Tool Calls MCP server still maintained?

API Tool Calls is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://apitoolcalls.com/mcp?tools=all
- Website: https://apitoolcalls.com/agent.html
- Changelog RSS feed: https://verifymcp.io/servers/cowerxdev-apitoolcalls/apitoolcalls-2.xml
- Changelog JSON feed: https://verifymcp.io/servers/cowerxdev-apitoolcalls/apitoolcalls-2.json
- HTML version of this page: https://verifymcp.io/servers/cowerxdev-apitoolcalls/apitoolcalls-2
