# WhatChUNeed Citation Verification

> WhatChUNeed Citation Verification is a paid API for AI agents from whatchuneed.vercel.app, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-22).

Verifies and validates citations in text by checking their accuracy, existence, and credibility

## Facts

- Endpoint: POST https://whatchuneed.vercel.app/api/verify/citations?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/whatchuneed-citation-verification-dc35e11c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TmUHhAfOdZXIuOasYVZ7e

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 whatchuneed-citation-verification-dc35e11c -d '<json body>'
```

Example prompt: Can you verify this citation for me: 'According to Smith et al. (2021), climate change increases hurricane frequency by 40%' — I need to know if this is a real study and if the claim is accurately represented.

## When to prefer this

Use this endpoint when you need to validate whether citations, references, or quoted claims are accurate and credible before publishing or submitting content. It is particularly useful for academic writing, journalism, and research workflows where citation integrity is critical. Prefer this over general-purpose search when you specifically need a pass/fail or credibility verdict on a citation rather than just finding information about a topic.

## Known failure modes

- Vague or incomplete citation input may return inconclusive results
- Citations to paywalled or inaccessible sources may not be fully verifiable
- Very recent publications may not yet be indexed
- Malformed input string may return an error status
- API may return generic result object with limited detail for ambiguous queries

## How this service works

320+ pay-per-call API endpoints across accommodation, LLM, code execution, crypto, medical, finance, and more. One API, one payment. Powered by x402 protocol.

## Output

Returns a result object containing the verification status of the citation, including whether the source exists, whether the claim accurately represents the source material, and an overall status field indicating validity or issues found.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "string",
   "description": "Request input"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "result": {
   "type": "object",
   "description": "Response data"
  },
  "status": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/whatchuneed-citation-verification-dc35e11c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from whatchuneed.vercel.app](https://www.zero.xyz/host/whatchuneed.vercel.app/llms.txt)