# DDG Tine Claim Verifier

> DDG Tine Claim Verifier is a paid API for AI agents from agents.daedalusdevelopmentgroup.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-20).

Adjudicates a closed-set factual claim about an AI run (model identity, cost, tool host, output digest, step counts, status, run ID) returning supported/contradicted/unknown with the deciding evidence path.

## Facts

- Endpoint: POST https://agents.daedalusdevelopmentgroup.com/v1/tine/claim-verify?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ddg-tine-claim-verifier-b8cefa9e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ae4ev-_CTM3vIFM9RC4Zr

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability ddg-tine-claim-verifier-b8cefa9e -d '<json body>'
```

Example prompt: Can you verify whether run oid-abc123 actually used gpt-4o and kept costs under $0.10 USDC — I need to know if that claim is supported, contradicted, or unknown, along with the evidence path that decided it.

## When to prefer this

Use this endpoint when you need a structured, machine-verifiable adjudication of a specific factual claim about an AI agent run — particularly when the claim is from the closed set (model identity, cost, tool host, output digest, step count, status, run ID). Prefer this over general attestation endpoints when you need a verdict (supported/contradicted/unknown) rather than a raw attestation object, and when you need the deciding evidence path included in the response.

## Known failure modes

- Claim references a run ID that does not exist — returns unknown or 404-equivalent
- Insufficient evidence available to resolve claim — returns 'unknown' with empty evidence path
- Malformed claim body or missing required fields — returns validation error
- Payment not received or insufficient — x402 payment required error
- Claim type not in the supported closed set — returns error or unknown

## How this service works

Adjudicate a closed-set claim about a run (model_is, cost_le, no_tool_host, output_digest_at_step, step counts, status, run id) to supported | contradicted | unknown with the deciding evidence path.

## Output

Returns a verdict of 'supported', 'contradicted', or 'unknown' for the submitted claim, along with the deciding evidence path that led to that determination — enabling downstream auditing, dispute resolution, or compliance logging.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": true
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "ok": true
    }
   },
   "additionalProperties": true
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ddg-tine-claim-verifier-b8cefa9e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.daedalusdevelopmentgroup.com](https://www.zero.xyz/host/agents.daedalusdevelopmentgroup.com/llms.txt)