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MCP server report

Cosmonote MCP server

ai.cosmonote/notes

We checked this server on 2 November 2026 with McpStamp Check engine 1.2.0. It scored 46 of 100 (grade F), higher than 6.8% of the 33,003 registry servers that responded over HTTPS that day. Not ready for Claude, ChatGPT, Gemini and MCP Registry.

Measured facts

Score
46F
Sign-in
Not detected
Tools listed
0
Protocol version
None returned
Stores

Store readiness

StoreStatusReason
Claude Connectors Directory Not ready Blocked by initialize over Streamable HTTP.
ChatGPT app directory Not ready Blocked by initialize over Streamable HTTP.
Gemini Connected Apps Not ready Blocked by initialize over Streamable HTTP.
Official MCP Registry Not ready Blocked by initialize over Streamable HTTP.

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

Fixes

One check to fix

  1. Fails

    initialize over Streamable HTTP

    initialize

    Blocks Claude, ChatGPT, Gemini and MCP Registry.

    Measured HTTP 400, text/plain body without a JSON-RPC result

    Answer POST {"method":"initialize"} with a JSON-RPC result (application/json or text/event-stream) on this exact URL.

2 checks passed, 24 did not run

Passed. Served over HTTPS, GET answers SSE or 405.

Not run. Sign-in method the store supports (OAuth or none), 401 carries WWW-Authenticate resource_metadata, 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. These need an OAuth sign-in flow the check could not reach.

Not run. Supported protocol version negotiated, JSON or SSE response Content-Type, JSON-RPC error for unknown method, initialize latency, serverInfo name and version, Server instructions, tools capability declared, 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), Human-readable title on every tool, Tool descriptions. An earlier step did not return what these checks need.

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 Cosmonote

Markdown

[![McpStamp score](https://www.mcpstamp.com/badge?url=https%3A%2F%2Fnebula.cosmonote.ai%2Fmcp)](https://www.mcpstamp.com/r/ai-cosmonote-notes/)

HTML

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

About this server

Access your Cosmonote audio notes, transcriptions, summaries, and action items.
Registry name
ai.cosmonote/notes
Remote URL
https://nebula.cosmonote.ai/mcp
Version
1.0.0
Source
github.com/cosmonote/pocketbase
Website
cosmonote.ai
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.

More grade F servers

All grade F servers · All server reports · State of MCP readiness, November 2026