# GroundTruth Field Evidence (remote · groundtruth-oracle.vercel.app)

Verified location-bound retail evidence for AI agents, delivered by human field workers.

- Trust score: 66/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-29

## Components

- remote · `groundtruth-oracle.vercel.app`: 66/100 (this document), [markdown](https://verifymcp.io/servers/unspecifiedcoder-groundtruth/api-mcp.md), [page](https://verifymcp.io/servers/unspecifiedcoder-groundtruth/api-mcp)

## Channel facts

- Endpoint: `https://groundtruth-oracle.vercel.app/api/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## 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 2026-09-29.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 4 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - 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**: 69/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 261 tokens (~65/item across 4 items; 4 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 10/100
  - Stability observed for 3 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 93/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 80% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 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 GroundTruth Field Evidence MCP server?

GroundTruth Field Evidence is a hosted endpoint at https://groundtruth-oracle.vercel.app/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 unspecifiedcoder-groundtruth 'https://groundtruth-oracle.vercel.app/api/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "unspecifiedcoder-groundtruth": {
      "url": "https://groundtruth-oracle.vercel.app/api/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "unspecifiedcoder-groundtruth": {
      "type": "http",
      "url": "https://groundtruth-oracle.vercel.app/api/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.unspecifiedcoder-groundtruth]
url = "https://groundtruth-oracle.vercel.app/api/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "unspecifiedcoder-groundtruth": {
      "type": "remote",
      "url": "https://groundtruth-oracle.vercel.app/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add unspecifiedcoder-groundtruth --url 'https://groundtruth-oracle.vercel.app/api/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  unspecifiedcoder-groundtruth:
    url: "https://groundtruth-oracle.vercel.app/api/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "unspecifiedcoder-groundtruth": {
      "Transport": "http",
      "Url": "https://groundtruth-oracle.vercel.app/api/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add unspecifiedcoder-groundtruth -t streamable-http -u 'https://groundtruth-oracle.vercel.app/api/mcp'
```

### Other

```json
{
  "mcpServers": {
    "unspecifiedcoder-groundtruth": {
      "type": "http",
      "url": "https://groundtruth-oracle.vercel.app/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.

### 2026-09-28 (score 66, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-27 (score 65, +1)

- [functional improvement] Stability: unverified → 0.03
- [cosmetic] “human_do” added an optional parameter “service_tier”
- [cosmetic] “human_do” dropped the optional parameter “budget_usdt”

### 2026-09-26 (score 64)

First indexed and scored.

## MCP tools (4)

### `ground_truth_info` (~29 tokens)

GroundTruth Info

Get info about the GroundTruth ASP — what it does, pricing, and how to call it

### `human_do` (~106 tokens)

Human Do

Create a task for a human oracle to complete in the real world. Requires x402 payment. Returns a task_id to poll with task_status.

Input parameters:

- `instructions` (string, required): Detailed instructions for the human
- `intent` (string, required): What you want the human to do
- `proof_type` (string, required): Type of proof
- `service_tier` (string)
- `target_location` (object): Optional target location and allowed capture radius
- `timeout_seconds` (integer)

### `task_status` (~38 tokens)

Task Status

Check the status and result of a GroundTruth task by its task_id

Input parameters:

- `task_id` (string, required): The task ID returned by human_do

### `review_task` (~88 tokens)

Review Task

Review a submitted proof and accept or reject it. Accept releases the on-chain payout to the human oracle; reject fails the task with no payout. Call this after task_status shows the proof.

Input parameters:

- `decision` (string, required): accept = pay the oracle; reject = no payout
- `reason` (string): Optional note explaining the decision
- `task_id` (string, required): The task ID to review

## Diagnostics

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

## Score history

- 2026-09-29: 66
- 2026-09-28: 66
- 2026-09-27: 65
- 2026-09-26: 64

## Common questions

### What is the GroundTruth Field Evidence MCP server?

GroundTruth Field Evidence is an MCP server listed in the public MCP registry as io.github.unspecifiedcoder/groundtruth. Verified location-bound retail evidence for AI agents, delivered by human field workers. This page covers its hosted endpoint (https://groundtruth-oracle.vercel.app/api/mcp).

### Is the GroundTruth Field Evidence MCP server safe to use?

GroundTruth Field Evidence scores 66 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 GroundTruth Field Evidence MCP server expose?

GroundTruth Field Evidence exposes 4 tools: ground_truth_info, human_do, task_status, review_task. Their descriptions and schemas cost roughly 261 tokens of context every time the server is loaded.

### Does the GroundTruth Field Evidence MCP server require authentication?

No. We connected to GroundTruth Field Evidence without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the GroundTruth Field Evidence MCP server still maintained?

GroundTruth Field Evidence is still listed as active in the MCP registry. We last reached this channel on 29 September 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://groundtruth-oracle.vercel.app/api/mcp
- Repository: https://github.com/unspecifiedcoder/groundtruth
- Changelog RSS feed: https://verifymcp.io/servers/unspecifiedcoder-groundtruth/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/unspecifiedcoder-groundtruth/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/unspecifiedcoder-groundtruth/api-mcp