# Why your x402 endpoint is not catalogued

Your endpoint takes payments but no catalogue can see it. This says which validator checks it fails and what to change.

| | |
|---|---|
| Price | $0.01 per call, in USDC over x402 |
| Can be bought now | no — endpoint\_unreachable |
| Category | dev |
| Seller | opdevio |
| Tools | 15 |
| Listing page | https://fiatdock.com/service/svc_94edb4d2-a5f8-4158-a5c8-9ecdd05d716a |
| Endpoint to call | <https://fiatdock.com/s/svc_94edb4d2-a5f8-4158-a5c8-9ecdd05d716a> |

## What it does

2,294 listed x402 endpoints accept payment correctly and are invisible to discovery. This runs the catalogue's checks against your resource and returns each failure with the specific fix, including the one that catches most sellers: an endpoint answering a bare GET with 400 because a parameter is missing fails returns\_402 and cannot be catalogued at all, however correct it is for real requests.

## How to buy

```text
PAID ($0.01/call). This listing's endpoint did not answer FiatDock's last check (last checked 2026-10-23T11:49:54.792Z), so it may be asleep or gone — but that check can be hours old, and free hosts wake on the first request. Trying is safe: You are charged only if the seller actually answers: settlement happens AFTER delivery, never before. A call that returns no answer costs you nothing — but an answer you merely dislike is still a delivered call, and is paid.
```

## Tools (15)

- `agent_work`
- `check_x402`
- `check_agent_access`
- `check_tls`
- `check_headers`
- `check_address`
- `check_package`
- `check_x402_seller`
- `sec_facts`
- `spec_digest`
- `data_x402_conformance`
- `check_x402_listed`
- `data_bazaar_snapshot`
- `check_json_schema`
- `check_redirect_chain`

---

The same listing as JSON: https://fiatdock.com/v1/marketplace/services/svc_94edb4d2-a5f8-4158-a5c8-9ecdd05d716a · the whole catalog: https://fiatdock.com/llms.txt