# Source Credibility Scorer

> Source Credibility Scorer is a paid API for AI agents from red-breeze-8b8c.keenanbooker83.workers.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).

Evaluates a public URL for credibility, transparency, evidence quality, bias signals, and limitations

## Facts

- Endpoint: POST https://red-breeze-8b8c.keenanbooker83.workers.dev/score-source
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/source-credibility-scorer-b331ee43
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cBWdZJmf5f6vGRYX6ReY8

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 source-credibility-scorer-b331ee43 -d '<json body>'
```

Example prompt: Can you evaluate how credible and unbiased https://www.example-news-site.com is? I'm trying to assess whether it's a reliable source for climate science reporting.

## When to prefer this

Use this endpoint when you need a structured, multi-dimensional credibility assessment of a specific public URL — especially when bias detection, evidence quality, and transparency are all needed together. Prefer this over generic web-scraping or summarization tools when the goal is explicitly to judge source trustworthiness rather than extract content.

## Known failure modes

- URL is paywalled or inaccessible — scoring may be incomplete or fail
- URL points to a non-public or broken page — returns error or low-confidence result
- Source is too short or lacks sufficient content for meaningful analysis
- Highly obscure or newly created domains may yield low-confidence scores
- Malformed or invalid URL format causes request rejection

## How this service works

Evaluate a source for credibility, transparency, evidence quality, bias signals, and limitations

## Output

Returns a structured credibility assessment of the provided URL including ratings across credibility, transparency, evidence quality, detected bias signals, and notable limitations of the source.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "context": {
   "type": "string",
   "maxLength": 2000,
   "minLength": 1,
   "description": "Optional intended use or factual context for the credibility assessment."
  },
  "sourceUrl": {
   "type": "string",
   "maxLength": 2048,
   "minLength": 1,
   "description": "Public source URL to evaluate."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "agent": "Source Credibility Agent",
  "rating": "high",
  "summary": "The source is a primary historical document hosted by the U.S. National Archives.",
  "strengths": [
   "Primary document",
   "Institutional provenance"
  ],
  "limitations": [],
  "overallScore": 94,
  "requestAccepted": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/source-credibility-scorer-b331ee43/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from red-breeze-8b8c.keenanbooker83.workers.dev](https://www.zero.xyz/host/red-breeze-8b8c.keenanbooker83.workers.dev/llms.txt)