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Trust402 Resource Trust Score
x402
Trust402 Resource Trust Score is a paid API for AI agents from trust402.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).
Scores a single x402 resource across trust, schema completeness, price, discovery readiness, and receipt readiness dimensions.
Price / call$0.01
Success—
StatusUnknown
How this service works
Score one x402 resource for trust, schema, price, discovery, and receipt readiness.
Output
Returns a multi-dimensional trust score for the specified x402 resource, covering trust level, schema completeness, pricing assessment, discovery readiness (e.g. well-known file, OpenAPI presence), and receipt readiness — giving an agent or developer a structured signal about how safe and discoverable the resource is for autonomous payment flows.
Example use cases
Pre-listing marketplace readiness check
“Before I list my paid API on the x402 marketplace, can you score it for trust and discovery readiness? The origin is https://myapi.dev, the endpoint is https://myapi.dev/api/v1/search, it costs $0.02, it has a 402 challenge enabled, has an OpenAPI spec, and is receipt-ready.”
Evaluating a third-party x402 resource
“I found a paid API at https://partner.io/api/summarize — can you score it for trust? It costs $0.10, has a 402 header, but I'm not sure if it has an OpenAPI spec or a well-known file. No input schema visible.”
Validating buyer-readiness before autonomous spend
“My agent is about to pay for a resource at https://data-vendor.com/api/prices — origin is https://data-vendor.com, price is $0.01, it has 402, has a well-known file and an input schema, but no receipt support. Can you give me a trust score before I let the agent proceed?”
Technical details
Endpoint
POSThttps://trust402.vercel.app/api/trust/score-resource?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, structured trust signal for a single x402 resource before committing to autonomous payment — especially useful for pre-flight checks before an agent spends on a resource, or for marketplace sellers wanting to validate their listing posture. Prefer this over the full diligence report endpoint when you need a fast score without deep evidence collection, and over the origin-level evaluator when you are assessing a specific endpoint rather than an entire domain.
Side effects
- Missing required origin or endpoint URL returns validation error
- Invalid URI format for origin or endpoint rejected
- Price value out of expected range may affect scoring accuracy
- All boolean fields absent results in a minimal/low-confidence score
- Endpoint unreachable or unavailable returns service error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| has402 | boolean | |
| origin | string | Resource origin URL. |
| endpoint | string | Resource endpoint URL. |
| priceUsd | number | |
| hasOpenApi | boolean | |
| description | string | |
| hasWellKnown | boolean | |
| receiptReady | boolean | |
| hasInputSchema | boolean |
Tags
x402
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