Passage Protocol MCP Server

by hawthornhollows Your server? Claim it

local only

Passage Protocol runs on your own machine — the client starts it, so there is no endpoint to ping. 43 installs a week from npm.

Departure and admission records for AI agents with Ed25519/P-256 signatures.

Installs per day peak 25 · avg 7 · +96% w/w

a month agotoday

Installs / week

npm · @cellar-door/mcp-server

—

Stars

on GitHub

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Last commit

0 releases in 90 days

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License

language unknown

Nothing serious here today

Today is the operative word: we check Passage Protocol every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add passage-protocol -- npx -y @cellar-door/mcp-server

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "passage-protocol": {
      "args": [
        "-y",
        "@cellar-door/mcp-server"
      ],
      "command": "npx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.passage-protocol]
command = "npx"
args = ["-y", "@cellar-door/mcp-server"]

.cursor/mcp.json

{
  "mcpServers": {
    "passage-protocol": {
      "args": [
        "-y",
        "@cellar-door/mcp-server"
      ],
      "command": "npx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "passage-protocol": {
      "args": [
        "-y",
        "@cellar-door/mcp-server"
      ],
      "command": "npx"
    }
  }
}

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Passage Protocol — questions

Answers built from our own checks of this server.

Why is there no uptime for Passage Protocol?

Passage Protocol runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package @cellar-door/mcp-server was installed 43 times last week.

How do I connect Passage Protocol?

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 runs locally, so the command pulls @cellar-door/mcp-server straight from npm; nothing to host, nothing to sign up for.

How many people use Passage Protocol?

The npm package @cellar-door/mcp-server was installed 43 times in the last week. Week over week that is +96%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.