# x402 Trust & Discovery API — Market Endpoint

> x402 Trust & Discovery API — Market Endpoint is a paid API for AI agents from gkyf2bs3b4p35hwwg5zzsnejeu.srv.us, paid per call via x402, $0.02/call, status down (last checked 2026-10-02).

Returns a pre-purchase safety verdict (go / test-with-minimum / do-not-pay) for an x402 or MPP endpoint, plus credential compatibility checks, without spending funds

## Facts

- Endpoint: GET https://gkyf2bs3b4p35hwwg5zzsnejeu.srv.us/v1/market?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: down
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-trust-discovery-api-market-endpoint-bd7f6eb9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_a7u8gzaz6pXem5Dwl-MFa

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 x402-trust-discovery-api-market-endpoint-bd7f6eb9
```

Example prompt: Before I pay it, check whether this x402 endpoint https://someapi.example.com/data is safe to call and whether my EIP-3009 credential will actually work with it.

## When to prefer this

Use this endpoint when an AI agent needs to verify the safety, legitimacy, and credential compatibility of an x402 or MPP endpoint before spending USDC. It is specifically designed for the pre-purchase inspection gap — no other registry or explorer returns a go/do-not-pay verdict or checks whether a specific credential (EIP-3009 vs Circle Gateway) is accepted. Prefer this over general blockchain explorers or x402scan when you need an actionable safety signal, not just raw data.

## Known failure modes

- Unknown or uncrawled endpoint URL returns no settlement history or inconclusive verdict
- Invalid or malformed URL parameter causes a 400 error
- Credential type not recognized returns an error or null compatibility result
- Endpoint not yet indexed in the registry returns empty results
- Rate limiting or service unavailability returns 429 or 503

## How this service works

Independent pre-purchase safety and reputation checks for x402 and MPP endpoints, plus keyless onchain data on Base. Accepts BOTH EIP-3009 and Circle Gateway credentials — only 141 of 788 Base-payable resources do, and a single-credential buyer is locked out of 53.8% of this market on one rail or 28.3% on the other. GET /v1/guard?url=&credential= answers whether the credential you carry can pay a given endpoint at all, before you try. Searching this market for "is this API endpoint a scam" returns registries and explorers but no dedicated service; that gap is what /v1/guard fills, inspecting an endpoint WITHOUT paying it and returning a go / test-with-minimum / do-not-pay verdict backed by onchain settlement history.

## Output

Returns a structured verdict (go / test-with-minimum / do-not-pay) for the queried endpoint, along with credential compatibility status (whether EIP-3009 or Circle Gateway will be accepted), onchain settlement history from Base, and reputation signals — all without initiating any payment.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-trust-discovery-api-market-endpoint-bd7f6eb9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gkyf2bs3b4p35hwwg5zzsnejeu.srv.us](https://www.zero.xyz/host/gkyf2bs3b4p35hwwg5zzsnejeu.srv.us/llms.txt)