Proven Plaza Calculators & Open Data
REMOTE · PROVENPLAZA-AGENT-MCP.ZVORSTEG1.WORKERS.DEV
29 free construction calculators plus Florida contractor, permit, federal award and AI-crawler data.
Available components
Last scanned (20 hours ago)
Scores higher than 45% of remote servers
Reachable. Last reached 17 Oct 2026.
Category Developer Tools
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. How we score → Why this is hard to score →
Endpoint Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 1 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 406, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability67
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 5621 tokens (~144/item across 39 items; 39 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management17
- Stability observed for 5 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage98
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 93% of tool parameters carry a description.Partial
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "calc_voltage_drop" implies "drop" and declares readOnlyHint instead, contradicting what its own name says it does. See how to fix → Fail
- An AI judge read all 39 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 16 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 14 Oct 26 0
- Schema quality: 124 → 144 ▼ functional
- Server version: 0.1.1 → 0.1.2 functional
- New tool “calc_appliance_energy_cost” functional
- New tool “calc_brick” functional
- New tool “calc_concrete_block” functional
- New tool “calc_paver” functional
- New tool “calc_pool_chlorine” functional
- New tool “calc_pool_salt” functional
- New tool “calc_rafter_length” functional
- New tool “calc_sod” functional
- New tool “calc_stair_stringer” functional
- New tool “calc_wall_stud” functional
- “calc_ac_btu” reworded the description of “kitchen” cosmetic
- “calc_drywall” reworded the description of “include_ceiling” cosmetic
- “calc_voltage_drop” reworded the description of “phase” cosmetic
- 13 Oct 26 +2
- Tool “federal_awards” rewrote its description, which is the text the model reads security
- Tool “fl_contractor_licenses” rewrote its description, which is the text the model reads security
- Tool “sofl_permits” rewrote its description, which is the text the model reads security
- Tool coverage: 73% → 90% ▲ functional
- Stability: unverified → 0.03 ▲ functional
- Server version: 0.1.0 → 0.1.1 functional
- “ai_crawler_audit” reworded the description of “path” cosmetic
- “ai_crawler_audit” reworded the description of “url” cosmetic
- “federal_awards” reworded the description of “category” cosmetic
- “federal_awards” reworded the description of “from” cosmetic
- “federal_awards” reworded the description of “keywords” cosmetic
- “federal_awards” reworded the description of “limit” cosmetic
- “federal_awards” reworded the description of “minAmount” cosmetic
- “federal_awards” reworded the description of “naics” cosmetic
- “federal_awards” reworded the description of “states” cosmetic
- “federal_awards” reworded the description of “to” cosmetic
- “fl_contractor_licenses” reworded the description of “county” cosmetic
- “fl_contractor_licenses” reworded the description of “limit” cosmetic
- “fl_contractor_licenses” reworded the description of “since” cosmetic
- “fl_contractor_licenses” reworded the description of “trade” cosmetic
- “sitemap_urls” reworded the description of “max” cosmetic
- “sitemap_urls” reworded the description of “url” cosmetic
- “sofl_permits” reworded the description of “from” cosmetic
- “sofl_permits” reworded the description of “keyword” cosmetic
- “sofl_permits” reworded the description of “limit” cosmetic
- “sofl_permits” reworded the description of “source” cosmetic
- “sofl_permits” reworded the description of “to” cosmetic
- 12 Oct 26 56
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 17 Oct 2026 · Probed https://provenplaza-agent-mcp.zvorsteg1.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=zvorsteg1.workers.dev | CN=WE1,O=Google Trust Services,C=US | 29 Aug 2026 | 27 Nov 2026 | ECDSA 256 | ECDSA-SHA256 | 4a8d5ee62dccf4580e8a90a2a2689878 |
| SANs: zvorsteg1.workers.dev, *.zvorsteg1.workers.dev | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of provenplaza-agent-mcp.zvorsteg1.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://provenplaza-agent-mcp.zvorsteg1.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://provenplaza-agent-mcp.zvorsteg1.workers.dev/mcp | Inconclusive | 406 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
agent_readiness_score Agent-Readiness Score (free) ~74
Free 0-100 score of how easily AI assistants and agents can read, quote and contact a public business website: AI crawler rules, llms.txt, schema.org business/offer data, agent catalog, MCP card, sitemap, meta, contact. Not a Google ranking score.
| Name | Type | Req | Description |
|---|---|---|---|
| url | string | yes | – |
No output schema declared.
No examples provided.
agent_ready_fix_pack Agent-Ready fix pack generator (free) ~139
Generate robots.txt AI-crawler rules, llms.txt, schema.org JSON-LD and /.well-known/agent-catalog.json from facts the business supplies. services: one per line as "Name|Price". Uses only supplied facts.
| Name | Type | Req | Description |
|---|---|---|---|
| areaServed | string | – | – |
| bookingUrl | string | – | – |
| businessType | string | – | – |
| city | string | – | – |
| description | string | – | – |
| string | – | – | |
| name | string | yes | – |
| phone | string | – | – |
| region | string | – | – |
| services | string | – | – |
| url | string | yes | – |
No output schema declared.
No examples provided.
ai_crawler_audit AI crawler robots.txt audit ~62
Check a public site robots.txt for AI crawler allow/deny verdicts.
| Name | Type | Req | Description |
|---|---|---|---|
| path | string | – | Optional path to test against the rules, default / |
| url | string | yes | Public site URL or domain, e.g. https://example.com |
No output schema declared.
No examples provided.
calc_ac_btu Room AC BTU Calculator (ENERGY STAR Sizing) ~150
Room air-conditioner capacity using the ENERGY STAR sizing chart and its adjustments for sun, occupants and kitchens. Formula: Base BTU from the ENERGY STAR area chart; −10% heavily shaded, +10% very sunny, +600 BTU per person above 2, +4,000 BTU for a kitchen.
| Name | Type | Req | Description |
|---|---|---|---|
| kitchen | number | – | Used as kitchen; default 0; one of 0 = No, 1 = Yes (+4,000 BTU) |
| occupants | number | – | Regular occupants; default 2 |
| room_sqft | number | – | Room area (sq ft); default 350 |
| shade | string | – | Sun exposure; default normal |
No output schema declared.
No examples provided.
calc_appliance_energy_cost Appliance Energy Cost Calculator (kWh and $ per Year) ~162
Daily and yearly kWh and the cost to run any appliance from its wattage, hours of use and your electricity rate. Formula: kWh per day = watts × hours ÷ 1,000; kWh per year = kWh per day × days; cost = kWh × rate.
| Name | Type | Req | Description |
|---|---|---|---|
| days_per_year | number | – | Days used per year; default 365 |
| hours_per_day | number | – | Hours used per day (h); default 4 |
| rate_per_kwh | number | – | Your electricity rate (from your bill) ($/kWh); default 0.15 |
| watts | number | – | Appliance wattage (nameplate, or amps × volts) (W); default 1500 |
No output schema declared.
No examples provided.
calc_asphalt Asphalt Calculator (Tons for Driveways) ~126
Tons of hot-mix asphalt for a driveway or lot from area, compacted depth and mix density. Formula: Tons = L × W × depth(in)/12 × density(lb/cu ft) ÷ 2,000.
| Name | Type | Req | Description |
|---|---|---|---|
| depth_in | number | – | Compacted depth (in); default 2 |
| lb_per_cf | number | – | Mix density (ask your plant) (lb/cu ft); default 145 |
| length_ft | number | – | Length (ft); default 50 |
| width_ft | number | – | Width (ft); default 12 |
No output schema declared.
No examples provided.
calc_board_foot Board Foot Calculator (Lumber) ~133
Board feet and cost for hardwood or dimensional lumber. Formula: Board feet = thickness(in) × width(in) × length(ft) ÷ 12 × pieces (one board foot = 144 cubic inches).
| Name | Type | Req | Description |
|---|---|---|---|
| length_ft | number | – | Length (ft); default 8 |
| price_per_bf | number | – | Price per board foot (0 = skip) ($); default 0 |
| quantity | number | – | Pieces; default 10 |
| thickness_in | number | – | Thickness (in); default 1 |
| width_in | number | – | Width (in); default 6 |
No output schema declared.
No examples provided.
calc_brick Brick Calculator (How Many Bricks for a Wall) ~219
Bricks for a single-wythe wall from its area, the brick face size and the mortar joint. Defaults are a modular brick with a ⅜ in joint. Formula: Bricks per sq ft = 144 ÷ ((length + joint) × (height + joint)); bricks = (wall area − openings) × bricks per sq ft × (1 + waste%).
| Name | Type | Req | Description |
|---|---|---|---|
| joint_in | number | – | Mortar joint (in); default 0.375 |
| openings_sqft | number | – | Openings to subtract (sq ft); default 0 |
| unit_height_in | number | – | Brick height (actual) (in); default 2.25 |
| unit_length_in | number | – | Brick length (actual) (in); default 7.625 |
| wall_height_ft | number | – | Wall height (ft); default 8 |
| wall_length_ft | number | – | Wall length (ft); default 20 |
| waste_pct | number | – | Waste allowance (%); default 5 |
No output schema declared.
No examples provided.
calc_concrete_block Concrete Block (CMU) Calculator ~248
Number of 8×8×16 concrete blocks (CMU) for a wall. A standard block plus a ⅜ in joint covers 16 × 8 in, so about 1.125 blocks per square foot. Formula: Blocks per sq ft = 144 ÷ ((length + joint) × (height + joint)) = 144 ÷ (16 × 8) = 1.125 for standard units; blocks = net wall area × 1.125 × (1 + waste%).
| Name | Type | Req | Description |
|---|---|---|---|
| joint_in | number | – | Mortar joint (in); default 0.375 |
| openings_sqft | number | – | Openings to subtract (sq ft); default 0 |
| unit_height_in | number | – | Block height (actual) (in); default 7.625 |
| unit_length_in | number | – | Block length (actual) (in); default 15.625 |
| wall_height_ft | number | – | Wall height (ft); default 8 |
| wall_length_ft | number | – | Wall length (ft); default 40 |
| waste_pct | number | – | Waste allowance (%); default 5 |
No output schema declared.
No examples provided.
calc_concrete_column Concrete Column & Sonotube Calculator ~158
Concrete needed for round columns, piers and tube forms (sonotubes). Uses cylinder volume, which differs from slab math. Formula: Cubic feet = π × (diameter(in)/24)² × height(ft) × count; cubic yards = cu ft ÷ 27 × (1 + waste%).
| Name | Type | Req | Description |
|---|---|---|---|
| bag_yield_cf | number | – | Bag yield (cu ft/bag); default 0.6 |
| count | number | – | Number of columns; default 4 |
| diameter_in | number | – | Tube diameter (in); default 12 |
| height_ft | number | – | Height (ft); default 4 |
| waste_pct | number | – | Waste allowance (%); default 10 |
No output schema declared.
No examples provided.
calc_concrete_footing Concrete Footing Calculator (Continuous Wall Footings) ~151
Volume for continuous trench/wall footings where width is in inches and length runs the full perimeter. Formula: Cubic yards = Length(ft) × Width(in)/12 × Depth(in)/12 ÷ 27 × (1 + waste%).
| Name | Type | Req | Description |
|---|---|---|---|
| bag_yield_cf | number | – | Bag yield (cu ft/bag); default 0.6 |
| depth_in | number | – | Footing depth (in); default 8 |
| length_ft | number | – | Total footing length (ft); default 120 |
| waste_pct | number | – | Waste allowance (%); default 10 |
| width_in | number | – | Footing width (in); default 16 |
No output schema declared.
No examples provided.
calc_concrete_slab Concrete Slab Calculator (Cubic Yards & Bags) ~154
Estimate ready-mix cubic yards or the number of 80 lb bags for a rectangular slab, patio or driveway. Formula: Cubic yards = Length(ft) × Width(ft) × Thickness(in)/12 ÷ 27 × (1 + waste%). Bags = cubic feet ÷ bag yield.
| Name | Type | Req | Description |
|---|---|---|---|
| bag_yield_cf | number | – | Bag yield (cu ft/bag); default 0.6 |
| depth_in | number | – | Thickness (in); default 4 |
| length_ft | number | – | Length (ft); default 20 |
| waste_pct | number | – | Waste allowance (%); default 10 |
| width_ft | number | – | Width (ft); default 10 |
No output schema declared.
No examples provided.
calc_deck_board Deck Board Calculator ~179
Number of deck boards for a rectangular deck, accounting for board width and gap. Formula: Rows = ⌈width(in) ÷ (board width + gap)⌉; boards = rows × ⌈deck length ÷ board length⌉ × (1 + waste%).
| Name | Type | Req | Description |
|---|---|---|---|
| board_length_ft | number | – | Board length (ft); default 16 |
| board_width_in | number | – | Actual board width (in); default 5.5 |
| deck_length_ft | number | – | Deck length (board direction) (ft); default 16 |
| deck_width_ft | number | – | Deck width (ft); default 12 |
| gap_in | number | – | Gap between boards (in); default 0.1875 |
| waste_pct | number | – | Waste allowance (%); default 10 |
No output schema declared.
No examples provided.
calc_drywall Drywall Calculator (Sheets Needed) ~198
Number of drywall sheets for walls and optionally the ceiling. Formula: Sheets = (perimeter × height + ceiling area) × (1 + waste%) ÷ sheet area.
| Name | Type | Req | Description |
|---|---|---|---|
| include_ceiling | number | – | Include ceiling; default 1; one of 1 = Yes, 0 = No |
| room_length_ft | number | – | Room length (ceiling) (ft); default 14 |
| room_width_ft | number | – | Room width (ceiling) (ft); default 10 |
| sheet_l_ft | number | – | Sheet length (ft); default 8 |
| sheet_w_ft | number | – | Sheet width (ft); default 4 |
| wall_height_ft | number | – | Wall height (ft); default 8 |
| wall_perimeter_ft | number | – | Room perimeter (ft); default 48 |
| waste_pct | number | – | Waste allowance (%); default 10 |
No output schema declared.
No examples provided.
calc_fence Fence Calculator (Posts, Rails & Pickets) ~176
Posts, rails and pickets for a straight run of wood privacy or picket fence. Formula: Sections = ⌈length ÷ spacing⌉; posts = sections + 1 + gates; pickets = ⌈length(in) ÷ (picket width + gap)⌉.
| Name | Type | Req | Description |
|---|---|---|---|
| gates | number | – | Gates (extra posts); default 1 |
| length_ft | number | – | Fence length (ft); default 100 |
| picket_gap_in | number | – | Gap between pickets (in); default 0 |
| picket_width_in | number | – | Picket width (in); default 5.5 |
| post_spacing_ft | number | – | Post spacing (ft); default 8 |
| rails_per_section | number | – | Rails per section; default 2 |
No output schema declared.
No examples provided.
calc_flooring_tile Flooring & Tile Calculator (Square Feet & Boxes) ~136
Square footage plus waste and number of boxes for tile, laminate, vinyl plank or hardwood. Formula: Area = L × W; to buy = area × (1 + waste%); boxes = to buy ÷ coverage per box.
| Name | Type | Req | Description |
|---|---|---|---|
| box_coverage_sqft | number | – | Coverage per box (on the box) (sq ft); default 20 |
| length_ft | number | – | Room length (ft); default 14 |
| waste_pct | number | – | Waste allowance (more for diagonal layouts) (%); default 10 |
| width_ft | number | – | Room width (ft); default 12 |
No output schema declared.
No examples provided.
calc_insulation_r_value Insulation R-Value Thickness Calculator ~117
Thickness needed to reach a target R-value for the R-per-inch printed on your insulation product. Formula: Thickness(in) = target R ÷ R per inch. Volume in board feet = area(sq ft) × thickness(in).
| Name | Type | Req | Description |
|---|---|---|---|
| area_sqft | number | – | Area (optional) (sq ft); default 1000 |
| r_per_inch | number | – | R-value per inch (product label); default 3.2 |
| target_r | number | – | Target R-value; default 38 |
No output schema declared.
No examples provided.
calc_mulch_gravel Mulch, Gravel & Topsoil Calculator (Cubic Yards) ~149
Cubic yards (and optional tons) of mulch, gravel, sand or soil for a bed or path. Formula: Cubic yards = L(ft) × W(ft) × depth(in) ÷ 324 (since 27 cu ft × 12 in = 324). Tons = cu yd × supplier density.
| Name | Type | Req | Description |
|---|---|---|---|
| depth_in | number | – | Depth (in); default 3 |
| length_ft | number | – | Length (ft); default 20 |
| tons_per_cy | number | – | Material density from your supplier (0 = skip) (tons/cu yd); default 0 |
| width_ft | number | – | Width (ft); default 10 |
No output schema declared.
No examples provided.
calc_oval_pool_volume Pool Volume Calculator: Oval (Gallons) ~100
Gallons in an oval (elliptical) pool. Formula: Gallons = π × (L/2) × (W/2) × average depth × 7.48052.
| Name | Type | Req | Description |
|---|---|---|---|
| avg_depth_ft | number | – | Average depth (ft); default 4.5 |
| length_ft | number | – | Length (ft); default 30 |
| width_ft | number | – | Width (ft); default 15 |
No output schema declared.
No examples provided.
calc_paint Paint Calculator (Gallons for Walls) ~166
Gallons of wall paint from room perimeter and height, minus doors and windows, for any number of coats. Formula: Paintable area = perimeter × height − 20 sq ft per door − 15 sq ft per window. Gallons = area × coats ÷ label coverage.
| Name | Type | Req | Description |
|---|---|---|---|
| coats | number | – | Coats; default 2 |
| coverage_sqft_per_gal | number | – | Coverage (from your can label) (sq ft/gal); default 350 |
| doors | number | – | Doors; default 1 |
| wall_height_ft | number | – | Wall height (ft); default 8 |
| wall_perimeter_ft | number | – | Room perimeter (ft); default 48 |
| windows | number | – | Windows; default 2 |
No output schema declared.
No examples provided.
calc_paver Paver Calculator (Pavers, Base Gravel & Sand) ~213
Number of pavers for a patio, walkway or driveway plus cubic yards of compacted base and bedding sand. Formula: Pavers per sq ft = 144 ÷ (paver length × width); pavers = area × per sq ft × (1 + waste%). Base and sand cubic yards = area × depth(in) ÷ 324.
| Name | Type | Req | Description |
|---|---|---|---|
| base_depth_in | number | – | Base depth (per your design) (in); default 4 |
| length_ft | number | – | Area length (ft); default 16 |
| paver_length_in | number | – | Paver length (in); default 8 |
| paver_width_in | number | – | Paver width (in); default 4 |
| sand_depth_in | number | – | Bedding sand depth (in); default 1 |
| waste_pct | number | – | Waste allowance (more for patterns/curves) (%); default 10 |
| width_ft | number | – | Area width (ft); default 12 |
No output schema declared.
No examples provided.
calc_pool_chlorine Pool Liquid Chlorine Calculator (Ounces to Raise Free Chlorine) ~179
Fluid ounces of liquid chlorine (sodium hypochlorite) to raise free chlorine by a target number of ppm, from pool volume and product strength. Formula: Available chlorine (g) = gallons × 3.78541 L/gal × ppm (mg/L) ÷ 1,000. Product (mL) = grams ÷ (strength% ÷ 100), since trade percent is grams of available chlorine per 100 mL. Fl oz = mL ÷ 29.5735.
| Name | Type | Req | Description |
|---|---|---|---|
| pool_gallons | number | – | Pool volume (gal); default 15000 |
| raise_ppm | number | – | Raise free chlorine by (ppm); default 3 |
| strength_pct | number | – | Product strength (trade %, on the jug) (%); default 12.5 |
No output schema declared.
No examples provided.
calc_pool_salt Pool Salt Calculator (Pounds of Salt for a Saltwater Pool) ~165
Pounds and bags of pool salt to raise a saltwater pool from its current salt level to the target your chlorine generator needs. Formula: Salt (lb) = gallons × 8.34 lb/gal × (target ppm − current ppm) ÷ 1,000,000. Bags = ⌈lb ÷ bag size⌉.
| Name | Type | Req | Description |
|---|---|---|---|
| bag_lb | number | – | Bag size (lb); default 40 |
| current_ppm | number | – | Current salt level (test strip or meter) (ppm); default 0 |
| pool_gallons | number | – | Pool volume (gal); default 15000 |
| target_ppm | number | – | Target salt level (from your cell manual) (ppm); default 3200 |
No output schema declared.
No examples provided.
calc_pool_volume Pool Volume Calculator: Rectangular (Gallons) ~118
Gallons in a rectangular pool with a sloped bottom, using average depth. Formula: Gallons = L × W × (shallow + deep)/2 × 7.48052 gal/cu ft.
| Name | Type | Req | Description |
|---|---|---|---|
| deep_ft | number | – | Deep-end depth (ft); default 6 |
| length_ft | number | – | Length (ft); default 32 |
| shallow_ft | number | – | Shallow-end depth (ft); default 3.5 |
| width_ft | number | – | Width (ft); default 16 |
No output schema declared.
No examples provided.
calc_rafter_length Rafter Length Calculator (From Run and Roof Pitch) ~157
Common rafter length, ridge rise and roof angle from the horizontal run and pitch, with optional overhang. Formula: Pitch factor = √(1 + (rise/12)²). Rafter length = (run + overhang) × pitch factor. Ridge rise = run × rise ÷ 12. Angle = atan(rise ÷ 12).
| Name | Type | Req | Description |
|---|---|---|---|
| overhang_in | number | – | Horizontal overhang (eave) (in); default 12 |
| pitch_rise | number | – | Pitch (rise per 12 in of run) (in); default 6 |
| run_ft | number | – | Horizontal run (half the span, minus half the ridge board) (ft); default 14 |
No output schema declared.
No examples provided.
calc_roofing Roofing Calculator (Squares, Bundles & Pitch Factor) ~205
Roof area from the house footprint and pitch, converted to roofing squares (100 sq ft) and shingle bundles. Formula: Pitch factor = √(1 + (rise/12)²). Roof area = (L + 2×overhang) × (W + 2×overhang) × pitch factor. Squares = area ÷ 100 × (1 + waste%).
| Name | Type | Req | Description |
|---|---|---|---|
| bundles_per_square | number | – | Bundles per square (see wrapper); default 3 |
| footprint_length_ft | number | – | Footprint length (ft); default 40 |
| footprint_width_ft | number | – | Footprint width (ft); default 30 |
| overhang_in | number | – | Eave/rake overhang (in); default 12 |
| pitch_rise | number | – | Pitch (rise per 12 in run) (in); default 6 |
| waste_pct | number | – | Waste allowance (%); default 10 |
No output schema declared.
No examples provided.
calc_round_pool_volume Pool Volume Calculator: Round / Above-Ground (Gallons) ~89
Gallons in a round or above-ground pool. Formula: Gallons = π × (D/2)² × average depth × 7.48052 (≈ D² × depth × 5.875).
| Name | Type | Req | Description |
|---|---|---|---|
| avg_depth_ft | number | – | Average water depth (ft); default 4.5 |
| diameter_ft | number | – | Diameter (ft); default 24 |
No output schema declared.
No examples provided.
calc_sod Sod Calculator (Square Feet, Pieces & Pallets) ~197
Square feet of sod, number of pieces and pallets for a lawn area. Piece size and pallet coverage are editable because they vary by farm and grass type. Formula: Sq ft to buy = L × W × (1 + waste%); pieces = sq ft ÷ (piece length × width ÷ 144); pallets = sq ft ÷ pallet coverage.
| Name | Type | Req | Description |
|---|---|---|---|
| length_ft | number | – | Lawn length (ft); default 50 |
| pallet_sqft | number | – | Coverage per pallet (ask your supplier) (sq ft); default 400 |
| piece_length_in | number | – | Piece length (ask your supplier) (in); default 24 |
| piece_width_in | number | – | Piece width (ask your supplier) (in); default 16 |
| waste_pct | number | – | Waste allowance (%); default 5 |
| width_ft | number | – | Lawn width (ft); default 40 |
No output schema declared.
No examples provided.
calc_solar_panel Solar Panel Calculator (How Many Panels Do I Need?) ~156
Panels needed to offset annual electricity use, from panel wattage, peak sun hours and system losses. Formula: Annual kWh per panel = W/1000 × peak sun hours × 365 × (1 − losses). Panels = ⌈annual use ÷ kWh per panel⌉.
| Name | Type | Req | Description |
|---|---|---|---|
| annual_kwh | number | – | Annual usage (from your bills) (kWh); default 12000 |
| panel_watts | number | – | Panel rating (W); default 400 |
| peak_sun_hours | number | – | Peak sun hours/day (look up in PVWatts) (h); default 5 |
| system_losses_pct | number | – | System losses (%); default 14 |
No output schema declared.
No examples provided.
calc_stair_stringer Stair Stringer Calculator (Risers, Treads & Stringer Length) ~179
Number of risers and treads, exact riser height, total run and stringer length from the floor-to-floor rise, checked against the IRC 7¾ in maximum riser. Formula: Risers = ⌈total rise ÷ max riser⌉; riser height = total rise ÷ risers; treads = risers − 1; total run = treads × tread depth; stringer length = √(rise² + run²).
| Name | Type | Req | Description |
|---|---|---|---|
| max_riser_in | number | – | Maximum riser height allowed (in); default 7.75 |
| total_rise_in | number | – | Total rise (finished floor to finished floor) (in); default 108 |
| tread_depth_in | number | – | Tread depth (run per step) (in); default 10 |
No output schema declared.
No examples provided.
calc_voltage_drop Wire Size & Voltage Drop Calculator (AWG, Copper/Aluminum) ~203
Voltage drop for a single- or three-phase run using NEC Chapter 9 Table 8 conductor sizes. Formula: VD = 2 × K × I × L ÷ CM (single phase) or √3 × K × I × L ÷ CM (three phase); K = ohm·cmil/ft (approx. 12.9 Cu, 21.2 Al); CM from NEC Ch. 9 Table 8.
| Name | Type | Req | Description |
|---|---|---|---|
| amps | number | – | Load current (A); default 16 |
| awg | string | – | Wire size (AWG); default 12 |
| material | string | – | Conductor; default copper |
| one_way_ft | number | – | One-way length (ft); default 100 |
| phase | number | – | Phase; default 1; one of 1 = Single phase, 3 = Three phase |
| volts | number | – | Source voltage (V); default 120 |
No output schema declared.
No examples provided.
calc_wall_stud Wall Stud Calculator (Studs & Plates for a Framed Wall) ~240
Studs at 16 or 24 in on center for a wall length, plus extras for corners and openings, and linear feet of top and bottom plate. Formula: Studs on layout = ⌈length(in) ÷ spacing⌉ + 1; total = layout + corners × extras per corner + openings × extras per opening. Plate linear ft = length × plates.
| Name | Type | Req | Description |
|---|---|---|---|
| corners | number | – | Corners in this wall; default 2 |
| openings | number | – | Door/window openings; default 1 |
| plates | number | – | Plates (bottom + double top = 3); default 3 |
| spacing_in | number | – | Stud spacing (on center); default 16; one of 16 = 16 in o.c., 24 = 24 in o.c., 12 = 12 in o.c. |
| studs_per_corner | number | – | Extra studs per corner; default 2 |
| studs_per_opening | number | – | Extra studs per opening (king/jack); default 2 |
| wall_length_ft | number | – | Wall length (ft); default 20 |
No output schema declared.
No examples provided.
federal_awards Federal awards (USAspending) ~147
Search federal contract and grant awards from the official USAspending.gov API by keyword, NAICS, state, date and amount.
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | contracts or grants |
| from | string | – | Start date YYYY-MM-DD |
| keywords | string | – | Search words, e.g. roofing |
| limit | integer | – | Max awards, 1-500 |
| minAmount | number | – | Minimum award amount in USD |
| naics | string | – | NAICS code, e.g. 238160 |
| states | string | – | Comma-separated state codes, e.g. FL,GA |
| to | string | – | End date YYYY-MM-DD |
No output schema declared.
No examples provided.
fl_contractor_licenses Florida contractor licenses (DBPR) ~105
Search Florida DBPR contractor licenses (official public extract files) by county, trade and issue date. Business records only.
| Name | Type | Req | Description |
|---|---|---|---|
| county | string | – | Florida county name, e.g. Palm Beach |
| limit | integer | – | Max rows, 1-1000 |
| since | string | – | Only licenses issued on/after this date, YYYY-MM-DD |
| trade | string | – | Trade keyword, e.g. roofing, pool, solar, general |
No output schema declared.
No examples provided.
offer_customlab CustomLab.ai offer (scope-first) ~38
CustomLab.ai AI operations automation offer from pack JSON. No price, SKU or Payment Link; CTA is a free 30-minute fit call.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
offer_flagship Managed AI Front Office offer (human-gated) ~46
Managed AI Front Office (flagship retainer) facts from pack JSON. HUMAN-GATED: recommend -> human Accept -> written scope -> pay. Agents must not purchase unsupervised.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
offer_list List pack offers ~25
List offers in the agent GEO pack (ids + names + status). Read-only.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
sitemap_urls Sitemap URL extractor ~57
Extract URLs from a public sitemap (follows sitemap indexes).
| Name | Type | Req | Description |
|---|---|---|---|
| max | integer | – | Maximum URLs to return, 1-5000 |
| url | string | yes | Sitemap URL or site root (robots.txt Sitemap: lines are followed) |
No output schema declared.
No examples provided.
sofl_permits South Florida building permits ~105
Recent building permits from Miami-Dade County and Fort Lauderdale open data, filterable by date and keyword. Owner names excluded.
| Name | Type | Req | Description |
|---|---|---|---|
| from | string | – | Start date YYYY-MM-DD |
| keyword | string | – | Filter permit descriptions, e.g. roof |
| limit | integer | – | Max rows, 1-1000 |
| source | string | – | miami-dade or fort-lauderdale |
| to | string | – | End date YYYY-MM-DD |
No output schema declared.
No examples provided.
How do I install the Proven Plaza Calculators & Open Data MCP server?
Proven Plaza Calculators & Open Data is a hosted endpoint at https://provenplaza-agent-mcp.zvorsteg1.workers.dev/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.
remote · provenplaza-agent-mcp.zvorsteg1.workers.dev
claude mcp add --transport http zacharyvorsteg-provenplaza-agent-mcp 'https://provenplaza-agent-mcp.zvorsteg1.workers.dev/mcp'
What is the Proven Plaza Calculators & Open Data MCP server?
Proven Plaza Calculators & Open Data is an MCP server listed in the public MCP registry as io.github.ZacharyVorsteg/provenplaza-agent-mcp. 29 free construction calculators plus Florida contractor, permit, federal award and AI-crawler data. This page covers its hosted endpoint (https://provenplaza-agent-mcp.zvorsteg1.workers.dev/mcp).
Is the Proven Plaza Calculators & Open Data MCP server safe to use?
Proven Plaza Calculators & Open Data scores 59 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 Proven Plaza Calculators & Open Data MCP server expose?
Proven Plaza Calculators & Open Data exposes 39 tools: calc_concrete_slab, calc_concrete_column, calc_concrete_footing, calc_paint, calc_roofing, and 34 more. Their descriptions and schemas cost roughly 5,621 tokens of context every time the server is loaded.
Does the Proven Plaza Calculators & Open Data MCP server require authentication?
No. We connected to Proven Plaza Calculators & Open Data without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Proven Plaza Calculators & Open Data MCP server still maintained?
Proven Plaza Calculators & Open Data is still listed as active in the MCP registry. We last reached this channel on 17 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.