# Reported issues for x402 Discovery MCP

Pod holds 6 of 6 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded entirely — a maintainer's release checklist is not a warning to a prospective user.

Back to [x402 Discovery MCP](/mcp/x402-discovery-mcp).

## Most discussed

### Correct Studio X dynamic prices for three self-registered endpoints

Studio X was registered today through POST https://x402scout.com/register. Three video entries were submitted with incorrect single-value prices, and a second registration with the same service_id was rejected as a duplicate URL.

Please update the following catalog entries to their actual minimum prices:

- 9432c426-67b7-4db4-a46d-3c754e6cb8dd — https://www.studio-x.cc/api/generate/video-fast — USD 0.11 (dynamic range 0.11-0.165)
- 48167f05-eb87-47cf-aa82-8f2c889c9b60 — https://www.studio-x.cc/

[Read the thread](https://github.com/rplryan/x402-discovery-mcp/issues/16) · 2026-07-13 · open · external user · 1 comment

### Listing copy refresh for byte-library/f5f2b0af (flagship feed changed)

Hi — I build PayPerByte (you cleaned up our listing in #10 — confirmed on our side, thanks). One small copy refresh when convenient, no urgency:

Our row `byte-library/f5f2b0af` still describes `POST /feeds/address-reputation` as the flagship. We now feature **`POST /feeds/sanctions-screen`** — signed, version-pinned OFAC SDN + Consolidated screening at $0.05; every answer embeds the list-state (published date + sha256) it was judged against. Resource count 22 is still correct.

Suggested descri

[Read the thread](https://github.com/rplryan/x402-discovery-mcp/issues/13) · 2026-07-01 · closed · external user · 52 comments

### scout_relay pre-pay payTo validation — signed delta feed (free to test)

Hi @rplryan — I build an x402 service registry and I really like how `scout_relay` discovers, routes **and pays** autonomously.

**A concrete edge case your catalog hits:** it refreshes ~every 6h. If a listed `payTo` rotates *inside* that window, `scout_relay` can sign a `transferWithAuthorization` to a dead/rotated address — the USDC is irrecoverable, plus gas on the failed attempt + the retry.

I run **SYNTHORA Registry Watch** — a *signed* delta feed of the live x402 market (Ed25519 + append-

[Read the thread](https://github.com/rplryan/x402-discovery-mcp/issues/12) · 2026-06-22 · open · external user · 1 comment

### Catalog price_usd stale after registration — need update/upsert for existing URLs (GEDX402)

## Summary

`POST /register` rejects re-registration when the URL already exists (**HTTP 409**), but does **not** update `price_usd` (or description) on the existing row. We need either a maintainer data fix for our endpoints or a documented **update/upsert** API.

## Environment

- Catalog: `GET https://x402scout.com/catalog` (`Accept: application/json`)
- Register: `POST https://x402scout.com/register` (OpenAPI documents 201/422 only; we also see 409)

## Affected entries (GEDX402)

| name | u

[Read the thread](https://github.com/rplryan/x402-discovery-mcp/issues/11) · 2026-06-20 · closed · external user · 2 comments

### Duplicate listing: please remove stale "BYTE Library" row (superseded by byte-library/f5f2b0af)

Hi — I run BYTE Library (PayPerByte), the x402 data gateway at https://x402.payperbyte.io. Your catalog has two rows for us:

1. **Stale** — legacy/1c6aaa5a-e7e9-4839-863b-cb504ee489ed (registered 2026-06-10, source "manual"): says "Arbitrum Sepolia testnet; mainnet gated on audit", network arbitrum-sepolia, price 0. That was accurate when registered but we've since cut over.
2. **Current** — byte-library/f5f2b0af (registered 2026-06-11 via x402_register): Base mainnet (eip155:8453), USDC, $0.05

[Read the thread](https://github.com/rplryan/x402-discovery-mcp/issues/10) · 2026-06-11 · closed · external user · 4 comments

### ERC-8004 Trust Provider: SENTINEL AML/CFT Compliance Intelligence

## Summary

SENTINEL (https://mru-oracle.com) has implemented the first ERC-8004 Trust Provider endpoints in the x402 ecosystem. We would like to register as a trust provider in x402scout's `/v1/trust-providers` list.

## What SENTINEL Provides

SENTINEL is an AML/CFT Compliance Intelligence platform with 77K+ sanctions records, providing:

- **Address Screening**: Compliance attestation for x402 payment addresses against OFAC-SDN, EU-Sanctions, UN-Consolidated lists
- **Service Verification**: 

[Read the thread](https://github.com/rplryan/x402-discovery-mcp/issues/4) · 2026-03-06 · open · external user · 9 comments

## Most recent

The remaining reports are on [the project's issue tracker](https://github.com/rplryan/x402-discovery-mcp/issues).