# Verity Suite Source Reliability Assessment

> Verity Suite Source Reliability Assessment is a paid API for AI agents from verity-suite.onrender.com, paid per call via x402, $0.35/call, status unknown (last checked 2026-09-15).

Assesses the trustworthiness and reliability of a URL, domain, news outlet, organization, or author for a specified purpose, returning a calibrated trust verdict and score.

## Facts

- Endpoint: POST https://verity-suite.onrender.com/source/pro
- Price: $0.35/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/verity-suite-source-reliability-assessment-727788a9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qbf-PFJmYhQHjRO_d3G0E

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 verity-suite-source-reliability-assessment-727788a9 -d '<json body>'
```

Example prompt: Can you check how trustworthy reuters.com is for reporting on financial markets — I want a reliability score and any red flags I should know about?

## When to prefer this

Choose this endpoint when an AI agent needs a calibrated, pay-per-call trust signal about a specific source before citing it, passing it to a user, or using it as evidence. Particularly useful for fact-checking pipelines, content curation, research assistants, and misinformation detection workflows where a fail-closed, per-call pricing model is preferred over a subscription.

## Known failure modes

- Source is too obscure or new to assess — returns trust: unknown with a low score
- URL is malformed or unresolvable — input validation error
- Purpose field omitted may reduce contextual accuracy of assessment
- Payment of 0.35 USDC required per call — unpaid requests rejected
- Service may be unavailable on Render free tier cold-start delays

## How this service works

The trust fabric for AI agents — calibrated, fail-closed services agents pay per call.

## Output

Returns a trust verdict (trusted/mixed/untrusted/unknown), a numeric reliability score from 0 to 1, a list of reasons underpinning the assessment, optional evidence sources consulted, and optional red flags such as known bias or misinformation history.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "source"
 ],
 "properties": {
  "source": {
   "type": "string",
   "description": "a URL, domain, outlet, org, or author to assess"
  },
  "purpose": {
   "type": "string",
   "description": "what the source is being trusted for"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "title": "verify_id_out",
 "required": [
  "trust",
  "score",
  "reasons"
 ],
 "properties": {
  "score": {
   "type": "number",
   "title": "Score",
   "maximum": 1,
   "minimum": 0,
   "description": "0 = unreliable, 1 = highly reliable"
  },
  "trust": {
   "enum": [
    "trusted",
    "mixed",
    "untrusted",
    "unknown"
   ],
   "type": "string",
   "title": "Trust",
   "description": "overall reliability verdict"
  },
  "reasons": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "title": "Reasons",
   "description": "what the assessment is based on"
  },
  "sources": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "title": "Sources",
   "description": "evidence about the source actually used"
  },
  "red_flags": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "title": "Red Flags",
   "description": "specific reliability concerns"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/verity-suite-source-reliability-assessment-727788a9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from verity-suite.onrender.com](https://www.zero.xyz/host/verity-suite.onrender.com/llms.txt)