# Jemeen Citation Verifier

> Jemeen Citation Verifier is a paid API for AI agents from jemeen-agent-services.onrender.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-11-02).

Verifies that cited URLs actually support the claims attributed to them, returning per-citation verdicts and a summary score

## Facts

- Endpoint: POST https://jemeen-agent-services.onrender.com/v1/verify-citations?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/jemeen-citation-verifier-618acf1a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hiJMxrXrIhLc0qhxOQmYb

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 jemeen-citation-verifier-618acf1a -d '<json body>'
```

Example prompt: Can you verify these three citations for me — check that the URLs are reachable and that the pages actually support the claims I've attributed to them: c1 → 'OpenAI was founded in 2015' at https://openai.com/about, c2 → 'GPT-4 supports vision' at https://openai.com/research/gpt-4?

## When to prefer this

Choose this endpoint when you need automated, pay-per-call citation verification that checks both URL liveness and semantic content support for specific claims. It is ideal for AI agents auditing LLM-generated content for hallucinated references, researchers validating bibliographies before publication, or pipelines that must certify citation accuracy at scale. Prefer it over manual checking or generic link-checkers when you need structured per-citation verdicts with support scores, not just HTTP status.

## Known failure modes

- URL is unreachable or returns non-200 status — verdict set to 'unreachable' with the actual HTTP status code
- Cited page exists but content does not match the claim — verdict 'notFound' or 'partial' with low score
- Malformed or missing URL in input — likely 400 error or low-confidence result
- Payment failure via x402 — 402 response before verification runs
- Rate limiting or server timeout on the fetched URL — may return 'unreachable' rather than a content verdict

## How this service works

Pay-per-call verification and data services for AI agents: CSV quality, citation verification, AI readiness audits, requirements extraction, JSON Schema validation. x402 USDC, MCP and A2A.

## Output

A JSON object with a `results` array where each entry includes the citation ID, the URL fetched, a support score (0–1), a character offset, a verdict string ('supported', 'partial', 'notFound', or 'unreachable'), the fetch timestamp, and the HTTP status code. A `summary` object reports aggregate counts of supported, partial, not-found, and unreachable citations across all submitted claims.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "results": [
   {
    "id": "c1",
    "url": "https://example.com/",
    "score": 1,
    "offset": 15,
    "verdict": "supported",
    "fetchedAt": "2026-11-02T00:00:00.000Z",
    "httpStatus": 200
   }
  ],
  "summary": {
   "claims": 1,
   "partial": 0,
   "notFound": 0,
   "supported": 1,
   "unreachable": 0
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/jemeen-citation-verifier-618acf1a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from jemeen-agent-services.onrender.com](https://www.zero.xyz/host/jemeen-agent-services.onrender.com/llms.txt)