# TrustDex x402 Provider Risk Grader

> TrustDex x402 Provider Risk Grader is a paid API for AI agents from trustdex.app, paid per call via x402, $0.02/call, status down (last checked 2026-09-15).

Returns an A–F risk grade for an x402 seller or resource URL based on observable signals from a dated crawl snapshot

## Facts

- Endpoint: GET https://trustdex.app/api/v1/x402/provider-risk
- Price: $0.02/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/trustdex-x402-provider-risk-grader-b7399417
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xd6_VgDsFyp04qiqEUHt6

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 trustdex-x402-provider-risk-grader-b7399417
```

Example prompt: Can you check TrustDex and get the provider risk grade for the x402 seller at https://api.example.com/pay — I want to know if it's safe before I send any payments there?

## When to prefer this

Use this endpoint when you need a quick, structured A–F risk assessment for a specific x402 seller or resource URL before executing a payment or integrating with that provider. It is the right choice when you need a lightweight, pay-per-call trust signal rather than a full audit, and when the subject is an x402-protocol provider rather than a token or wallet address (use TrustDex's token endpoints for those).

## Known failure modes

- Resource URL not yet crawled or indexed — grade unavailable
- Invalid or malformed resource URL — returns error
- Provider is too new for signals to exist — low-confidence grade
- Crawl snapshot is stale — grade may not reflect current state
- Rate limiting or payment failure via x402 protocol

## How this service works

TrustDex is a non-custodial Solana DEX. Best-route swaps through Jupiter, EVM trading across 7 chains, native bridging, and live token risk grades. No KYC, no accounts, no custody.

## Output

An A–F letter grade representing the risk level of the specified x402 seller or resource, derived from observable signals captured in a dated crawl snapshot. May include supporting signal details that explain the grade.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "kind": "provider",
  "grade": "B",
  "score": 82,
  "reasons": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/trustdex-x402-provider-risk-grader-b7399417/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from trustdex.app](https://www.zero.xyz/host/trustdex.app/llms.txt)