# 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, $0.25/call, status unknown (last checked 2026-09-14).

Assesses the trustworthiness and reliability of a URL, domain, outlet, organization, or author for a given purpose, returning a scored trust verdict with reasons and red flags

## Facts

- Endpoint: POST https://verity-suite.onrender.com/source
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/verity-suite-source-reliability-assessment-85705256
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Kx1a3B-okMYAM7O3mMkIA

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-85705256 -d '<json body>'
```

Example prompt: Is nytimes.com a trustworthy source to cite for political news coverage? Give me a trust verdict and flag any reliability concerns.

## When to prefer this

Choose this endpoint when an AI agent needs to programmatically evaluate the credibility of an information source — especially before citing, quoting, or acting on content from that source. Particularly useful for fact-checking pipelines, research assistants, or news aggregation workflows where source provenance matters. The purpose parameter allows calibrated trust scoring tuned to a specific domain (e.g., medical vs. political), which generic search or reputation APIs do not offer.

## Known failure modes

- Unknown or obscure source with no available evidence returns trust='unknown' and low score
- Source URL is malformed or inaccessible, causing a validation error
- Purpose field is too vague to meaningfully calibrate the assessment
- Service unavailable on Render.com cold start, returning 503
- Payment authorization fails via x402 protocol, blocking the call
- Highly niche or newly created domains may have insufficient signals for confident scoring

## How this service works

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

## Output

Returns a structured object with: a categorical trust verdict (trusted/mixed/untrusted/unknown), a numeric reliability score from 0 to 1, a list of human-readable reasons explaining the assessment, optional evidence sources consulted, and a list of specific red flags identified about the source.

## 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-85705256/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)