# TariffMonkee Citation Verifier

> TariffMonkee Citation Verifier is a paid API for AI agents from tariffmonkee.com, paid per call via x402, $0.2/call, status unknown (last checked 2026-09-13).

Verifies whether citations or referenced claims in a body of text are accurate and supported by their cited sources

## Facts

- Endpoint: POST https://tariffmonkee.com/paid/verify-citations
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tariffmonkee-citation-verifier-3efe4a04
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Juz318dEUP9nd8MnFo8a-

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 tariffmonkee-citation-verifier-3efe4a04 -d '<json body>'
```

Example prompt: Can you check whether the citations in this article actually support the claims being made? Here's the content: 'Caffeine consumption improves cognitive performance by 30% (Smith et al., 2021) and reduces sleep duration by 2 hours (Jones, 2019).'

## When to prefer this

Use this endpoint when you need to programmatically verify that citations or references in a piece of text actually support the claims attributed to them — especially useful after AI-generated content, before publishing research summaries, or when auditing third-party reports for source integrity. Prefer this over manual fact-checking or general web search when you need a structured, per-citation accuracy verdict returned as data.

## Known failure modes

- Source URLs are paywalled or inaccessible, preventing verification
- Citations lack enough identifying information (no URL, DOI, or full title) to locate the source
- Body content is malformed or missing required fields
- Cited source content has changed since the claim was written
- AI interpretation of source meaning may introduce false positives or negatives

## How this service works

Small, single-purpose web data APIs that AI agents pay for per call in USDC over the x402 protocol (HTTP 402). No accounts, no API keys, no subscriptions.

## Output

A structured report indicating which citations were verified, which claims appear unsupported or misrepresented by their cited sources, and confidence or accuracy signals for each citation checked.

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "enum": [
      "POST"
     ]
    },
    "bodyType": {
     "type": "string",
     "enum": [
      "json"
     ]
    },
    "body": {
     "type": "object"
    }
   },
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tariffmonkee-citation-verifier-3efe4a04/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tariffmonkee.com](https://www.zero.xyz/host/tariffmonkee.com/llms.txt)