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MCP server report

Gateway MCP server

com.x402broker/mcp-gateway

We checked this server on 2 November 2026 with McpStamp Check engine 1.2.0. It scored 90 of 100 (grade A), higher than 61.4% of the 33,003 registry servers that responded over HTTPS that day. Ready for Gemini and MCP Registry. Not ready for Claude and ChatGPT.

Measured facts

Score
90A
Sign-in
OAuth
Tools listed
15
Protocol version
2025-11-25
Stores

Store readiness

StoreStatusReason
Claude Connectors Directory Not ready Blocked by Human-readable title on every tool.
ChatGPT app directory Not ready Blocked by Human-readable title on every tool.
Gemini Connected Apps Ready No blocking check failed.
Official MCP Registry Ready No blocking check failed.

MCP Registry ready means a valid public remote for the registry, not that the server is listed in a store.

Fixes

4 checks to fix

  1. Fails

    Human-readable title on every tool

    tool_titles

    Blocks Claude and ChatGPT.

    Measured 15/15 without title: search_catalog, lookup_catalog, get_product, get_product_details, search_shop_policies_and_faqs and 10 more

    Add a short human-readable "title" to every tool (shown in store UIs and consent screens).

  2. Fails

    JSON-RPC error for unknown method

    jsonrpc_errors

    Measured Unknown method returned a result

    Return JSON-RPC error -32601 (Method not found) for unknown methods instead of a result.

  3. Fails

    Server instructions

    instructions

    Measured No instructions in the initialize result

    Add an "instructions" string to the initialize result: what the server covers, for whom, and its limits.

  4. Fails

    GET answers SSE or 405

    get_stream

    Measured HTTP 200 application/json

    Return HTTP 405 Method Not Allowed on GET (or a text/event-stream), not a page or 404.

22 checks passed, 1 did not run

Passed. Served over HTTPS, initialize over Streamable HTTP, Supported protocol version negotiated, JSON or SSE response Content-Type, initialize latency, serverInfo name and version, tools capability declared, Sign-in method the store supports (OAuth or none), Protected resource metadata (RFC 9728), Resource metadata "resource" equals the server URL, Authorization server metadata (RFC 8414 / OIDC), First metadata URL Gemini tries answers 200 with the required fields, issuer equals the authorization_servers entry; token_endpoint_auth_methods_supported (ChatGPT), PKCE S256 advertised, Client registration (DCR or Client ID Metadata Documents), refresh_token grant advertised, tools/list returns tools, inputSchema is an object schema, Tool names are valid and portable, readOnlyHint or destructiveHint on every tool, Explicit readOnlyHint, destructiveHint and openWorldHint (ChatGPT), Tool descriptions.

Not run. 401 carries WWW-Authenticate resource_metadata. These need an OAuth sign-in flow the check could not reach.

Run a fresh check

This page is the 2 November 2026 snapshot. If you maintain this server and have shipped fixes since then, re-check it. The live check and the badge show the current result, and the next snapshot will pick up the change.

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McpStamp score for Gateway

Markdown

[![McpStamp score](https://www.mcpstamp.com/badge?url=https%3A%2F%2Fx402broker.com%2Fapi%2Fmcp)](https://www.mcpstamp.com/r/com-x402broker-mcp-gateway/)

HTML

<a href="https://www.mcpstamp.com/r/com-x402broker-mcp-gateway/"><img src="https://www.mcpstamp.com/badge?url=https%3A%2F%2Fx402broker.com%2Fapi%2Fmcp" alt="McpStamp score" height="20"></a>
Registry entry

About this server

Single-connection MCP gateway discovering and executing 490+ verified MCP & A2A tools.
Registry name
com.x402broker/mcp-gateway
Remote URL
https://x402broker.com/api/mcp
Version
7.0.17
Source
github.com/robertoyanguas-ops/assay
Website
x402broker.com
Checked
2 November 2026, engine 1.2.0, no credentials

The description above is the server's own text from the official MCP Registry. If a result looks wrong, run a fresh check and email support@zovo.one with the report link.

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