# BusCalc — Business & Trade Calculations (remote · buscalc.com)

26 tools: business math, energy costs, weather impact and attributed public data.

- Trust score: 72/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `buscalc.com`: 72/100 (this document), [markdown](https://verifymcp.io/servers/com-buscalc-calculations/api-mcp.md), [page](https://verifymcp.io/servers/com-buscalc-calculations/api-mcp)

## Channel facts

- Endpoint: `https://buscalc.com/api/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.6.0`

## 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**: 86/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 4610 tokens (~83/item across 55 items; 26 tools + 29 resources), lean.
  - Tools include usage examples.
- **Stability & Change Management**: 7/100
  - Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 75/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 12% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 26 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 28 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the BusCalc — Business & Trade Calculations MCP server?

BusCalc — Business & Trade Calculations is a hosted endpoint at https://buscalc.com/api/mcp, 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 com-buscalc-calculations 'https://buscalc.com/api/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-buscalc-calculations": {
      "url": "https://buscalc.com/api/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-buscalc-calculations": {
      "type": "http",
      "url": "https://buscalc.com/api/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-buscalc-calculations]
url = "https://buscalc.com/api/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-buscalc-calculations": {
      "type": "remote",
      "url": "https://buscalc.com/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-buscalc-calculations --url 'https://buscalc.com/api/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-buscalc-calculations:
    url: "https://buscalc.com/api/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-buscalc-calculations": {
      "Transport": "http",
      "Url": "https://buscalc.com/api/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-buscalc-calculations -t streamable-http -u 'https://buscalc.com/api/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-buscalc-calculations": {
      "type": "http",
      "url": "https://buscalc.com/api/mcp"
    }
  }
}
```

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.

### 2026-11-05 (score 72, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [functional regression] Schema quality: 3498 → 4610
- [functional] New resource “buscalc_method_market_price_references”
- [functional] New resource “buscalc_method_precious_metals_workspace”
- [functional] New resource “buscalc_method_reference_price_calculations”
- [functional] New resource “buscalc_method_utility_energy_calculations”
- [functional] New resource “buscalc_method_weather_data_lookup”
- [functional] New resource “buscalc_method_weather_operational_calculations”
- [functional] Server version: 1.4.0 → 1.6.0
- [functional] New tool “buscalc_market_price_references”
- [functional] New tool “buscalc_precious_metals_workspace”
- [functional] New tool “buscalc_reference_price_calculations”
- [functional] New tool “buscalc_utility_energy_calculations”
- [functional] New tool “buscalc_weather_data_lookup”
- [functional] New tool “buscalc_weather_operational_calculations”

### 2026-11-04 (score 72, +6)

- [security] The server rewrote its instructions, which are the text every model session reads
- [security] Tool “buscalc_break_even_sales” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_decision_feasibility” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_equipment_loan_payment” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_equipment_ownership_cost_per_hour” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_feet_and_inches” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_financial_mathematics” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_fleet_cost_per_mile” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_linear_algebra” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_markup_vs_margin” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_precious_metal_calculations” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_precious_metal_quotes” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_probability” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_recipe_portion_cost” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_sensitivity” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_service_business_hourly_rate” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_statistics” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_time_duration” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_uncertainty” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_unit_checks” rewrote its description, which is the text the model reads
- [security] Tool “buscalc_value_of_information” rewrote its description, which is the text the model reads
- [functional regression] Schema quality: 1167 → 2265
- [functional regression] Tool coverage: 30% → 15%
- [functional regression] Tool coverage: 30% → 17%
- [functional regression] Schema quality: 1167 → 2062
- [functional improvement] Stability: unverified → 0.03
- [functional improvement] Schema quality: fail → pass
- [functional improvement] Schema quality: fail → pass
- [functional improvement] Tool “buscalc_break_even_sales” now declares an output schema
- [functional improvement] Tool “buscalc_decision_feasibility” now declares an output schema
- [functional improvement] Tool “buscalc_equipment_loan_payment” now declares an output schema
- [functional improvement] Tool “buscalc_equipment_ownership_cost_per_hour” now declares an output schema
- [functional improvement] Tool “buscalc_feet_and_inches” now declares an output schema
- [functional improvement] Tool “buscalc_fleet_cost_per_mile” now declares an output schema
- [functional improvement] Tool “buscalc_markup_vs_margin” now declares an output schema
- [functional improvement] Tool “buscalc_recipe_portion_cost” now declares an output schema
- [functional improvement] Tool “buscalc_service_business_hourly_rate” now declares an output schema
- [functional improvement] Tool “buscalc_time_duration” now declares an output schema
- [functional] The server now declares the “completions” capability
- [functional] The server now declares the “prompts” capability
- [functional] The server now declares the “resources” capability
- [functional] First check of Schema quality: 100
- [functional] First check of Tool coverage: 100
- [functional] Schema quality: fair → good
- [functional] MCP protocol: Implements a current MCP spec version (2026-07-28).
- [functional] New prompt “buscalc_equipment_comparison”
- [functional] New prompt “buscalc_feasibility_workflow”
- [functional] New prompt “buscalc_metals_workflow”
- [functional] New prompt “buscalc_prepare_calculation”
- [functional] New prompt “buscalc_review_result”
- [functional] MCP protocol version: 2025-11-25 → 2026-07-28
- [functional] New resource “buscalc_error_recovery”
- [functional] New resource “buscalc_input_rules”
- [functional] New resource “buscalc_method_algebra_matrix_calculator”
- [functional] New resource “buscalc_method_break_even_sales”
- [functional] New resource “buscalc_method_decision_feasibility_calculator”
- [functional] New resource “buscalc_method_equipment_loan_payment”
- [functional] New resource “buscalc_method_equipment_ownership_cost_per_hour”
- [functional] New resource “buscalc_method_feet_and_inches”
- [functional] New resource “buscalc_method_financial_mathematics”
- [functional] New resource “buscalc_method_fleet_cost_per_mile”
- [functional] New resource “buscalc_method_markup_vs_margin”
- [functional] New resource “buscalc_method_precious_metal_calculations”
- [functional] New resource “buscalc_method_precious_metal_quotes”
- [functional] New resource “buscalc_method_probability_calculator”
- [functional] New resource “buscalc_method_recipe_portion_cost”
- [functional] New resource “buscalc_method_sensitivity_and_thresholds”
- [functional] New resource “buscalc_method_service_business_hourly_rate”
- [functional] New resource “buscalc_method_statistics_calculator”
- [functional] New resource “buscalc_method_time_duration”
- [functional] New resource “buscalc_method_uncertainty_propagation”
- [functional] New resource “buscalc_method_unit_conversion_and_dimensions”
- [functional] New resource “buscalc_method_value_of_information”
- [functional] New resource “buscalc_overview”
- [functional] Server version: 1.3.0 → 1.4.0
- [functional] Server version: 1.2.0 → 1.3.0
- [functional] Server version: 1.0.1 → 1.2.0
- [functional] New tool “buscalc_precious_metal_calculations”
- [functional] New tool “buscalc_precious_metal_quotes”
- [functional] New tool “buscalc_financial_mathematics”
- [functional] New tool “buscalc_linear_algebra”
- [functional] New tool “buscalc_probability”
- [functional] New tool “buscalc_sensitivity”
- [functional] New tool “buscalc_statistics”
- [functional] New tool “buscalc_uncertainty”
- [functional] New tool “buscalc_unit_checks”
- [functional] New tool “buscalc_value_of_information”

### 2026-11-03 (score 66)

First indexed and scored.

## MCP tools (26)

### `buscalc_fleet_cost_per_mile` (~154 tokens)

Fleet cost per mile

Add your vehicle operating, ownership and driver costs, then divide by productive miles for the same period. Use this tested BusCalc worksheet when the task matches its inputs and scope. Returns named results, units, formula, assumptions, method version and a source-page URL. No prices or omitted costs are looked up; no private projects or purchases are accessed. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (object, required)
- `modelVersion` (string): Optional expected method version; a mismatch is rejected.
- `units` (object, required)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_markup_vs_margin` (~143 tokens)

Markup vs margin

Convert cost and desired gross margin into price without confusing markup. Use this tested BusCalc worksheet when the task matches its inputs and scope. Returns named results, units, formula, assumptions, method version and a source-page URL. No prices or omitted costs are looked up; no private projects or purchases are accessed. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (object, required)
- `modelVersion` (string): Optional expected method version; a mismatch is rejected.
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_recipe_portion_cost` (~151 tokens)

Recipe portion cost

Find the ingredient cost of a batch and each sellable portion from package prices and quantities used. Use this tested BusCalc worksheet when the task matches its inputs and scope. Returns named results, units, formula, assumptions, method version and a source-page URL. No prices or omitted costs are looked up; no private projects or purchases are accessed. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (object, required)
- `modelVersion` (string): Optional expected method version; a mismatch is rejected.
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_service_business_hourly_rate` (~144 tokens)

Service business hourly rate

Recover annual overhead and owner compensation across billable hours. Use this tested BusCalc worksheet when the task matches its inputs and scope. Returns named results, units, formula, assumptions, method version and a source-page URL. No prices or omitted costs are looked up; no private projects or purchases are accessed. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (object, required)
- `modelVersion` (string): Optional expected method version; a mismatch is rejected.
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_equipment_ownership_cost_per_hour` (~145 tokens)

Equipment ownership cost per hour

Recover economic ownership and running cost at realistic utilization. Use this tested BusCalc worksheet when the task matches its inputs and scope. Returns named results, units, formula, assumptions, method version and a source-page URL. No prices or omitted costs are looked up; no private projects or purchases are accessed. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (object, required)
- `modelVersion` (string): Optional expected method version; a mismatch is rejected.
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_break_even_sales` (~141 tokens)

Break even sales

Find units and revenue needed to cover fixed costs. Use this tested BusCalc worksheet when the task matches its inputs and scope. Returns named results, units, formula, assumptions, method version and a source-page URL. No prices or omitted costs are looked up; no private projects or purchases are accessed. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (object, required)
- `modelVersion` (string): Optional expected method version; a mismatch is rejected.
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_equipment_loan_payment` (~143 tokens)

Equipment loan payment

Build a fixed-rate equipment loan amortization schedule. Use this tested BusCalc worksheet when the task matches its inputs and scope. Returns named results, units, formula, assumptions, method version and a source-page URL. No prices or omitted costs are looked up; no private projects or purchases are accessed. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (object, required)
- `modelVersion` (string): Optional expected method version; a mismatch is rejected.
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_feet_and_inches` (~154 tokens)

Feet and inches

Add or subtract two measurements, or multiply one length by a count, with fractional-inch entry and decimal conversions. Use this tested BusCalc worksheet when the task matches its inputs and scope. Returns named results, units, formula, assumptions, method version and a source-page URL. No prices or omitted costs are looked up; no private projects or purchases are accessed. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (object, required)
- `modelVersion` (string): Optional expected method version; a mismatch is rejected.
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_time_duration` (~148 tokens)

Time duration

Find time between two clock readings, including an explicit end-day offset and optional excluded minutes. Use this tested BusCalc worksheet when the task matches its inputs and scope. Returns named results, units, formula, assumptions, method version and a source-page URL. No prices or omitted costs are looked up; no private projects or purchases are accessed. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (object, required)
- `modelVersion` (string): Optional expected method version; a mismatch is rejected.
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_decision_feasibility` (~145 tokens)

Decision feasibility calculator

Evaluate a job, restaurant production run, delivery route, equipment purchase or staffing plan against explicit cost, capacity, earnings and timing limits. Return favorable/unfavorable feasibility, breaking points, permitted repairs and verification priorities. Zero permitted change locks an item. Uses original bounded workflow models built on established arithmetic and constraint methods; no world-first, forecast or obtainable-saving guarantee. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_probability` (~155 tokens)

Probability calculator

Calculate probabilities, tails, percentiles, event relationships, Bayes updates, counts, expected values or Wilson/exact proportion intervals using one of 26 explicit methods. JSON numbers only; decimal probabilities. No distribution fitting, random simulation or real-world guarantee. API limits are tighter than the browser: hypergeometric draws 200, shapes/df 1000, Poisson mean 1000. Inspect assumptions and returned source URL. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_statistics` (~131 tokens)

Statistics and regression

Summarize 1–1000 numerical observations or fit unweighted least-squares y on x from 2–100 paired rows. Returns named descriptive results or slope, intercept, correlation, R squared and a prediction. No causal inference or time-series forecast. Inputs are structured JSON arrays, not executable expressions. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_linear_algebra` (~123 tokens)

Algebra and matrix calculations

Solve numerical quadratic/linear equations, solve a small linear system, multiply or transpose matrices, or compute a determinant/inverse. Structured JSON matrices up to 8×8; singular or unreliable solves are rejected. No arbitrary code, symbolic algebra or unbounded optimization. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_unit_checks` (~155 tokens)

Unit conversion and dimensional checks

Convert compatible length, area, volume, mass, time, speed, force, pressure, energy, power, temperature or angle units. Check dimensions of two explicit products without evaluating arbitrary formulas. Offset temperatures are forbidden in products; money conversion is unavailable. Returns a calculation receipt with inputs, results, assumptions, validation checks and source. The receipt is unsigned, not independent certification. No private data, external lookup or arbitrary code execution. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_financial_mathematics` (~155 tokens)

Financial mathematics

Calculate NPV from2..601 time-zero-first cash flows, present/future value, beginning/end annuities or equivalent annual value over up to600 whole periods. Explicit ratePercent inputs; unsupported overflow/underflow is rejected. Returns a calculation receipt with inputs, results, assumptions, validation checks and source. The receipt is unsigned, not independent certification. No private data, external lookup or arbitrary code execution. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_sensitivity` (~157 tokens)

Contribution-profit sensitivity and thresholds

Find baseline profit, one-at-a-time endpoint changes, zero-profit thresholds and min/max profit across up to16 simultaneous rectangle corners. A threshold may be negative, outside the entered range, or undefined when slope is zero; none is an automatic recommendation. Returns a calculation receipt with inputs, results, assumptions, validation checks and source. The receipt is unsigned, not independent certification. No private data, external lookup or arbitrary code execution. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (object, required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_uncertainty` (~155 tokens)

Bounded ranges and uncertainty propagation

Propagate2..8 hard intervals through sum/difference/product/quotient, or combine1..8 uncorrelated standard-uncertainty terms using entered derivatives. Interval arithmetic expands endpoints outward; statistical coverage factors do not establish confidence levels. Returns a calculation receipt with inputs, results, assumptions, validation checks and source. The receipt is unsigned, not independent certification. No private data, external lookup or arbitrary code execution. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_value_of_information` (~154 tokens)

Expected value of information

Calculate expected values, best current expected-value action, perfect-information upper bound, optional imperfect-signal information value and net value after information cost. Handles maximize payoff or minimize cost; does not infer probabilities, certify decisions or model risk aversion. Returns a calculation receipt with inputs, results, assumptions, validation checks and source. The receipt is unsigned, not independent certification. No private data, external lookup or arbitrary code execution. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_precious_metal_quotes` (~140 tokens)

Precious metal price snapshots

Fetch a dated Gold API USD spot snapshot for selected gold XAU, silver XAG, platinum XPT or palladium XPD. Returns provider update time, age and units. Rejects old, malformed or unavailable quotes; never substitutes an invented or stale price. This is data lookup, not a calculation or dealer execution offer. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (object, required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `kind` (string)
- `modelVersion` (string)
- `notes` (array)
- `provider` (string)
- `quotes` (array)
- `retrievedAt` (string)
- `sourceURL` (string)

### `buscalc_precious_metal_calculations` (~126 tokens)

Precious metal calculations

Calculate contained precious metal value, scrap payout, bullion premium, investment gain/loss, resale break-even or gold–silver ratio using explicit supplied USD prices. Optional price snapshots preserve source/time but are not independently authenticated. No live price is fetched by this tool. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_utility_energy_calculations` (~142 tokens)

US utility and heating energy calculations

Four supplied-price methods: electricity measured kWh or input power/hours/count/load, and natural gas, propane or heating oil from measured fuel or useful heat/efficiency. Fetch dated EIA references separately; no price is fetched by math. Explicit units, inactive fields zero, period costs and price scenarios. Returns an unsigned replayable receipt. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_weather_operational_calculations` (~180 tokens)

Weather operational impact calculations

Supplied-data work-window and limiting-condition analysis, conditional disruption costs, forecast revision decision impact on common valid hours, heating/cooling degree-hours with explicit load assumptions, rain capture volume, approximate dew point, paired temperature bias/MAE/RMSE, and mobilization/revisit economics. Up to 48 hourly periods, 24 per revision snapshot, 200 pairs; 16 KB API body limit also applies. Missing weather stays null; no safety clearance, fabricated observation, expected loss or agency endorsement. Returns replayable receipt. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_weather_data_lookup` (~159 tokens)

NOAA and NWS observations, forecast and data quality

Fetch a US NWS location hourly forecast, associated station observation and active official alerts, or NOAA CO-OPS coastal water level at a seven-digit station. Coordinates rounded to 0.01 degree before provider lookup. Five-minute cache; source timestamps, missing values, quality flags and errors retained. Full future hours only, up to 168 returned. Not a calculation success, safety assurance or executable market price. No user job data sent upstream. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `coastal` (object)
- `forecast` (object)
- `kind` (string)
- `notes` (array)
- `observation` (object)
- `quality` (array)
- `retrievedAt` (string)
- `source` (string)
- `sourceURL` (string)

### `buscalc_precious_metals_workspace` (~175 tokens)

Precious metals transaction workspace

Ten detailed methods: mixed collection value, entered dealer sale offers, refining settlement, bounded whole-item purchase baskets, inventory margin, fabrication quotes, transaction feasibility, equivalent-lot purchase offers, replacement-cost selling price, and partially unpriced purchase exposure. Seller prices are user-entered, never fetched. Supplied USD per fine troy ounce; no prices fetched. Enter zero for unused metal prices. All schema fields are explicit; inactive content-method fields are zero. Returns detailed rows and an unsigned replayable calculation receipt. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_reference_price_calculations` (~136 tokens)

Fuel and currency purchase cost calculations

Calculate fleet/driving/measured fuel plus separately counted idle or generator consumption, price sensitivity and total period cost; or currency-converted purchase cost including explicit markup and fees. Uses supplied figures only. Fetch references separately, then pass the selected rate/price explicitly. Results include units, formula, limitations and replayable receipt. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `calculator` (string)
- `inputs` (object)
- `modelVersion` (string)
- `receipt` (object)
- `results` (array)
- `sourceURL` (string)
- `units` (object)

### `buscalc_market_price_references` (~189 tokens)

Dated fuel and currency references

Fetch EIA monthly state/sector electricity or natural-gas averages, seasonal reported US residential/wholesale propane/heating-oil prices, weekly gasoline/diesel references, or ECB daily rates. Not real-time utility tariffs. Electricity converted from cents/kWh to USD/kWh; gas USD/Mcf; liquid fuels USD/US gallon. Returns observation date, retrieval time, source, units and cadence; fuel also includes publication time. Not tick prices, bank execution rates or local retail offers. Old/unavailable data fails explicitly. Reference lookups are counted separately from successful math. Call with arguments containing inputs (not flattened fields), optional units and optional modelVersion. Read required fields and exact enum choices from inputSchema. Do not pass the REST calculator field inside MCP arguments.

Input parameters:

- `inputs` (object, required)
- `modelVersion` (string)
- `units` (object)

Output parameters:

- `cadence` (string)
- `calculator` (string)
- `kind` (string)
- `notes` (array)
- `reference` (object)
- `source` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-buscalc-calculations/api-mcp#diagnostics

## Score history

- 2026-11-05: 72
- 2026-11-04: 72
- 2026-11-03: 66

## Common questions

### What is the BusCalc — Business & Trade Calculations MCP server?

BusCalc — Business & Trade Calculations is an MCP server listed in the public MCP registry as com.buscalc/calculations. 26 tools: business math, energy costs, weather impact and attributed public data. This page covers its hosted endpoint (https://buscalc.com/api/mcp).

### Is the BusCalc — Business & Trade Calculations MCP server safe to use?

BusCalc — Business & Trade Calculations scores 72 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 BusCalc — Business & Trade Calculations MCP server expose?

BusCalc — Business & Trade Calculations exposes 26 tools: buscalc_fleet_cost_per_mile, buscalc_markup_vs_margin, buscalc_recipe_portion_cost, buscalc_service_business_hourly_rate, buscalc_equipment_ownership_cost_per_hour, and 21 more. Their descriptions and schemas cost roughly 3,900 tokens of context every time the server is loaded.

### Does the BusCalc — Business & Trade Calculations MCP server require authentication?

No. We connected to BusCalc — Business & Trade Calculations without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the BusCalc — Business & Trade Calculations MCP server still maintained?

BusCalc — Business & Trade Calculations 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://buscalc.com/api/mcp
- Website: https://buscalc.com/for-ai/
- Changelog RSS feed: https://verifymcp.io/servers/com-buscalc-calculations/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-buscalc-calculations/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-buscalc-calculations/api-mcp