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MCP server report

Modmillennialdesigns MCP server

com.modmillennialdesigns/modmillennialdesigns

We checked this server on 2 November 2026 with McpStamp Check engine 1.2.0. It scored 81 of 100 (grade B), higher than 26.3% 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
81B
Sign-in
OAuth
Tools listed
14
Protocol version
2025-11-25
Stores

Store readiness

StoreStatusReason
Claude Connectors Directory Not ready Blocked by readOnlyHint or destructiveHint on every tool and Human-readable title on every tool.
ChatGPT app directory Not ready Blocked by readOnlyHint or destructiveHint on every tool, Explicit readOnlyHint, destructiveHint and openWorldHint (ChatGPT) and 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

6 checks to fix

  1. Fails

    readOnlyHint or destructiveHint on every tool

    tool_annotations

    Blocks Claude and ChatGPT.

    Measured 14/14 tools set neither readOnlyHint nor destructiveHint: get_checkout, create_checkout, update_checkout, complete_checkout, cancel_checkout and 9 more

    Set annotations.readOnlyHint: true on read-only tools and destructiveHint: true on tools that modify or delete data (Claude needs one of them on every tool; ChatGPT needs all three hints, see tool_open_world).

  2. Fails

    Explicit readOnlyHint, destructiveHint and openWorldHint (ChatGPT)

    tool_open_world

    Blocks ChatGPT.

    Measured 14/14 tools miss an explicit hint: get_checkout, create_checkout, update_checkout, complete_checkout, cancel_checkout and 9 more

    Set readOnlyHint, destructiveHint and openWorldHint to explicit true/false on every tool (OpenAI app review requires all three).

  3. Fails

    Human-readable title on every tool

    tool_titles

    Blocks Claude and ChatGPT.

    Measured 14/14 without title: get_checkout, create_checkout, update_checkout, complete_checkout, cancel_checkout and 9 more

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

  4. 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.

  5. Fails

    GET answers SSE or 405

    get_stream

    Measured HTTP 404 text/event-stream

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

  6. Warning

    Client registration (DCR or Client ID Metadata Documents)

    auth_registration

    Measured No registration_endpoint and no client_id_metadata_document_supported

    Add a Dynamic Client Registration endpoint (RFC 7591) or set client_id_metadata_document_supported: true; otherwise every store needs a manually issued client id.

20 checks passed, 1 did not run

Passed. Served over HTTPS, initialize over Streamable HTTP, Supported protocol version negotiated, JSON or SSE response Content-Type, JSON-RPC error for unknown method, 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, refresh_token grant advertised, tools/list returns tools, inputSchema is an object schema, Tool names are valid and portable, 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 Modmillennialdesigns

Markdown

[![McpStamp score](https://www.mcpstamp.com/badge?url=https%3A%2F%2Fmodmillennialdesigns.com%2Fapi%2Fucp%2Fmcp)](https://www.mcpstamp.com/r/com-modmillennialdesigns-modmillennialdesigns/)

HTML

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

About this server

AI-native commerce infrastructure for modmillennialdesigns.
Registry name
com.modmillennialdesigns/modmillennialdesigns
Remote URL
https://modmillennialdesigns.com/api/ucp/mcp
Version
1.0.0
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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