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fmsg MCP Server

not responding

fmsg is listed as active in the registry but did not answer our last check. 73 installs a week from npm. Last commit 17 Sep 2026.

Federated messaging with your fmsg hosting provider. Connect with OAuth or an API key.

Installs per day peak 308 · avg 18 · -76% w/w
a month agotoday
Uptime history 5 days of history · worst day 0%
5 days agonow
0.0%
Uptime 24h
0 of 182 checks
Tools
hidden behind auth
0 ms
Response time
average over 24h
73
Installs / week
npm and PyPI

fmsg does not always answer

Over the last week it answered 0.0% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 16 min ago.

run in your terminal
claude mcp add fmsg-mcp --transport http https://{oauth_mcp_endpoint}
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "fmsg-mcp": {
      "url": "https://{oauth_mcp_endpoint}"
    }
  }
}
~/.codex/config.toml
[mcp_servers.fmsg-mcp]
url = "https://{oauth_mcp_endpoint}"
.cursor/mcp.json
{
  "mcpServers": {
    "fmsg-mcp": {
      "url": "https://{oauth_mcp_endpoint}"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "fmsg-mcp": {
      "url": "https://{oauth_mcp_endpoint}"
    }
  }
}

This one needs environment variables set before it will start: FMSG_API_URL (Base URL of your hosting provider's or self-hosted fmsg Web API), FMSG_API_KEY (fmsg API key (fmsgk_...) for the address to send as), FMSG_DEFAULT_DOMAIN (Optional: lets short names resolve to @name@<domain>), FMSG_MCP_DOWNLOAD_DIR (Optional local folder enabling streamed attachment saves over stdio). The author declared them in the registry entry; get the values from the project itself.

This server publishes 1 more address. The block above uses the one we reach during checks; the full list is under Endpoints below, and the author may intend a particular one for your client.

Endpoints

URLTransportStateLatencyChecked
https://{oauth_mcp_endpoint} streamable-http answering 0 ms 16 min ago
https://{api_key_mcp_endpoint} streamable-http answering 2 ms 16 min ago

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fmsg — questions

Answers built from our own checks of this server.

Is fmsg working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 182 checks got a reply (0.0%), average response time 0 ms. The bar chart above shows every period we have measured.
The registry lists fmsg as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect fmsg?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does fmsg need an API key?
No. fmsg completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. This is what we observed, not what the docs claim.
How many people use fmsg?
The npm package @markmnl/fmsg-mcp was installed 73 times in the last week. Week over week that is -76%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is fmsg open source?
Yes — it is published under the MIT licence, written in TypeScript, 1 stars on GitHub and 1 open issue. The source link is on this page, so you can read exactly what it does with your data before you connect it.