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GroundTruth Field Evidence

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io.github.unspecifiedcoder/groundtruthv1.0.0

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

Commerce

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https://groundtruth-oracle.vercel.app/api/mcp

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ground_truth_info

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

This tool takes no arguments.

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GroundTruth Field Evidence MCP server | mcptry

ground_truth_info

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

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {}
}

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.

Argument	Type	Description
intent*	string	What you want the human to do
proof_type*	string	Type of proof
instructions*	string	Detailed instructions for the human
service_tier	string
target_location	object	Optional target location and allowed capture radius
timeout_seconds	integer

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "intent",
    "proof_type",
    "instructions"
  ],
  "properties": {
    "intent": {
      "type": "string",
      "maxLength": 500,
      "minLength": 1,
      "description": "What you want the human to do"
    },
    "proof_type": {
      "enum": [
        "photo",
        "form"
      ],
      "type": "string",
      "description": "Type of proof"
    },
    "instructions": {
      "type": "string",
      "maxLength": 1000,
      "minLength": 1,
      "description": "Detailed instructions for the human"
    },
    "service_tier": {
      "enum": [
        "integration_test",
        "evaluation_test",
        "quick_check",
        "photo_visit",
        "urgent_visit",
        "complex_visit"
      ],
      "type": "string",
      "default": "integration_test"
    },
    "target_location": {
      "type": "object",
      "required": [
        "label",
        "latitude",
        "longitude"
      ],
      "properties": {
        "label": {
          "type": "string",
          "maxLength": 200,
          "minLength": 1,
          "description": "Human-readable store or site name"
        },
        "latitude": {
          "type": "number",
          "maximum": 90,
          "minimum": -90
        },
        "longitude": {
          "type": "number",
          "maximum": 180,
          "minimum": -180
        },
        "radius_meters": {
          "type": "integer",
          "default": 150,
          "maximum": 5000,
          "minimum": 25
        }
      },
      "description": "Optional target location and allowed capture radius"
    },
    "timeout_seconds": {
      "type": "integer",
      "default": 3600,
      "maximum": 86400,
      "minimum": 60
    }
  }
}

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.

Argument	Type	Description
reason	string	Optional note explaining the decision
task_id*	string	The task ID to review
decision*	string	accept = pay the oracle; reject = no payout

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "task_id",
    "decision"
  ],
  "properties": {
    "reason": {
      "type": "string",
      "maxLength": 300,
      "description": "Optional note explaining the decision"
    },
    "task_id": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
      "description": "The task ID to review"
    },
    "decision": {
      "enum": [
        "accept",
        "reject"
      ],
      "type": "string",
      "description": "accept = pay the oracle; reject = no payout"
    }
  }
}

task_status

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

Argument	Type	Description
task_id*	string	The task ID returned by human_do

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "task_id"
  ],
  "properties": {
    "task_id": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$",
      "description": "The task ID returned by human_do"
    }
  }
}