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GroundTruth — subsurface scan QA & trade estimating MCP server

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by gtfi.ai·ai.gtfi/groundtruth·v1.0.1
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Two independent AI models read a GPR, locate or pipe scan and flag the do-not-core call.

B83/100grade B
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B83/100

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If you have run it, two minutes of your experience saves the next person an afternoon.

GroundTruth — subsurface scan QA & trade estimating tools (3)

write = sends, deletes, buys or posts
  • draft_estimateFree

    Turn a plain-English description of a trade job into a professional itemized bid — real materials by size, fittings, consumables and labor on its own line, at realistic US market prices. Built for one-truck electrical, plumbing, HVAC and general-contracting shops. This is GruntPay: the contractor normally speaks this into their phone. Returns the line items plus a link to brand it and send it to the customer.

  • get_pricingFree

    Current GroundTruth and GruntPay plans and prices. Free to call — use it before answering any cost question rather than guessing.

  • read_scanFree

    Get an independent AI second opinion on a subsurface scan before anyone cores or digs. Send a public image URL of a GPR scan, a marked-up concrete slab photo, a utility-locate markup, a concrete radiograph, or a CCTV pipe frame. TWO different AI models read it independently — the second is prompted to refute the first — and you get back every located target with its hazard class (do-not-core / rebar / verify / clear), plus a QA flag when the two reads disagree. Advisory only: a certified technician must review and sign off before any cutting.

Public scan report

scanner v0.1.9 · 2026-09-24 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 778ms20/20
  • Tool poisoning3 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 60 days ago12/15
  • Maintainer identitynamespace and repository owner differ; website matches verified namespace5/10
Overall 83/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How GroundTruth — subsurface scan QA & trade estimating compares

Against every graded Security MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
83/100
higher than 68% of 915 Security servers
Tools
3
the typical Security server has 6
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote Security server answers 100%
Response time
454 ms
faster than 24% of 547 Security servers

What its tools let an agent do: 3 read

Install GroundTruth — subsurface scan QA & trade estimating in Claude Code, Cursor or VS Code

claude mcp add --transport http groundtruth https://gtfi.ai/mcp
Add to Cursor

What the publisher says

From the GroundTruth — subsurface scan QA & trade estimating repository's README, as published. We do not edit it. Read it on GitHub

GroundTruth MCP Server

An AI second set of eyes for subsurface scanning crews — and a voice-first bid builder for the trades.

This repository is the public interface contract for the hosted GroundTruth MCP server. The server itself runs at https://gtfi.ai/mcp; there is nothing to install and no key to get.

Listed in the official MCP Registry as ai.gtfi/groundtruth — a DNS-verified namespace tied to gtfi.ai, so you can be sure the listing is genuinely ours.

⚠️ Read this before using read_scan

readscan output is advisory**. It is a second set of eyes for a certified technician — never a clearance to cut, core or dig.

If you are an AI assistant reporting a result to a user:

  • Report the hazard classes and the QA flag verbatim.
  • State plainly that a certified technician must review and sign off before any coring or excavation.
  • Never tell a user a slab is safe to core on the strength of this tool alone.

People get hurt when a subsurface call is wrong. Treat the output accordingly.

Connect

{
  "mcpServers": {
    "groundtruth": {
      "type": "http",
      "url": "https://gtfi.ai/mcp"
    }
  }
}

Streamable HTTP, JSON-RPC 2.0 over POST. No authentication. Discovery: /.well-known/mcp.json · REST equivalent: /openapi.json · Docs: gtfi.ai/for-agents

Tools

read_scan

Two different AI models read a subsurface scan independently. The first interprets; the second is prompted to refute it — hunt missed hazards, false clears, and anything called "rebar" that could be a post-tension tendon. Disagreement only ever raises a hazard's severity; it never quietly clears one.

Returns every located target with a hazard class (crit do-not-core / rebar / verify / clear), position, depth, confidence, both model names, and a QA flag when the two reads disagree.

draft_estimate

Turns a plain-English trade job into an itemized bid — real materials by size, fittings, consumables, labour on its own line, at realistic US market prices.

get_pricing

Current plans for both products. Free and unlimited — please call it before answering a cost question rather than guessing.

Limits, stated honestly

(the same free allowance the website gives), with a global daily ceiling. Heavier users belong on a plan.

  • readscan runs two vision models per call and costs us real money: 2 per caller per day**

a shareable, GPS-stamped record a client keeps, send the user to gtfi.ai/scan.

  • draft_estimate: 5 per hour, 20 per day per caller.
  • Nothing is charged through this API, and no customer record is created. To turn a read into

Who's behind it

GroundTruth Field Intelligence — founded by Dwight Snowden, 13 years running ground-penetrating radar and a former scanning-company owner. Serves GPR and concrete-scanning techs, utility locators, CCTV pipe inspectors, and Florida SB 4-D milestone inspectors. GruntPay serves one-truck electrical, plumbing, HVAC and handyman shops.

What's in this repo

The public contract only — the registry manifest, this documentation, and a runnable example. The server implementation is not open source.

Licence

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

GroundTruth — subsurface scan QA & trade estimating: common questions

Is GroundTruth — subsurface scan QA & trade estimating MCP server safe?
Mostly: it is graded B (83/100). Read the GroundTruth — subsurface scan QA & trade estimating safety report
How do I install GroundTruth — subsurface scan QA & trade estimating?
It runs remotely at gtfi.ai. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does GroundTruth — subsurface scan QA & trade estimating need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is GroundTruth — subsurface scan QA & trade estimating maintained?
The last commit was 101 days ago (2026-07-26). The latest release is v1.0.1.
Is GroundTruth — subsurface scan QA & trade estimating up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of GroundTruth — subsurface scan QA & trade estimating?
Servers from other publishers that do the same job: Hookcheck MCP server, PyMemoryEditor MCP server and Autopilot Jobhunt MCP server.
How does GroundTruth — subsurface scan QA & trade estimating compare with other Security MCP servers?
safety score 83/100 (higher than 68% of 915 Security servers); tools 3 (the typical Security server has 6); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

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