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Pigeonpost MCP Server

local only

Pigeonpost runs on your own machine — the client starts it, so there is no endpoint to ping. 566 installs a week from npm. Last commit 17 Sep 2026.

Private asynchronous Pigeonpost messaging for AI agents over local MCP stdio.

Installs per day peak 286 · avg 22 · +645% w/w
a month agotoday
566
Installs / week
npm · @bekirdag/pigeonpost
0
Stars
0 open issues
17 Sep 2026
Last commit
0 releases in 90 days
MIT
License
Rust

What the code does

We read the source, 23 h ago · rules 3dff92dd89df

A tool parameter reaches a dangerous call

A value the model can set ends up inside a file or shell call. That is not a flaw by itself — for a terminal server it is the job — but it is where things go wrong when it is not.

A tool parameter reaches a file or shell call pigeonpost_inbox.pending → crates/pigeonpost-client/src/keystore.rs:1504
        std::fs::remove_file(path)?;
Evidence

Things with no honest explanation: a promise that contradicts the code, code that runs at install time while hiding what it does, data leaving the machine.

Deletes files or strips permissions crates/pigeonpost-compliance/src/operator.rs:4034
ppcompliance shred --before <YYYY-MM-DD> [--dry-run|--execute]\n\
Reaches cloud metadata service crates/pigeonpost-core/src/network.rs:40
        address: "169.254.169.254",
Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

File ships in the package but is absent from the source [пакет] bin/pigeonpost.js:1
этот файл ставится пользователю, но в репозитории его нет
                 (SELECT COUNT(*) FROM outbox),
                 (SELECT COALESCE(SUM(length(wrap) +
                                      CASE WHEN token IS NULL THEN 0
  const alias = path.join(root, first);
    subprocess.run(["python3", str(root / "install.py"), "--destdir", staging], check=True)
In the project's build, not in the package

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

Runs an external command deploy/acceptance/mcp-client.js:38
    this.child = spawn(binary, ["mcp"], {
Touches key and credential files deploy/postbox/blob-mirror.sh:23
KEY="${PIGEONPOST_BLOB_KEY:-$HOME/.ssh/pigeonpost-blob-mirror}"
Dumps the whole environment deploy/identity/test-chatgpt.py:26
        with patch.dict(os.environ, {"KC_ALLOW_LOOPBACK_TEST": "1"}):

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

A tool parameter here reaches a dangerous call

That is not a flaw by itself — but it is where things go wrong when it is not the job. We re-read this code on every release. Watch it and you hear from us the day another one appears.

Three servers free · no card

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.

run in your terminal
claude mcp add pigeonpost -- npx -y @bekirdag/pigeonpost
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "pigeonpost": {
      "args": [
        "-y",
        "@bekirdag/pigeonpost"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.pigeonpost]
command = "npx"
args = ["-y", "@bekirdag/pigeonpost"]
.cursor/mcp.json
{
  "mcpServers": {
    "pigeonpost": {
      "args": [
        "-y",
        "@bekirdag/pigeonpost"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "pigeonpost": {
      "args": [
        "-y",
        "@bekirdag/pigeonpost"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: PIGEONPOST_HOME (Directory containing this agent's local Pigeonpost identity and state.), PIGEONPOST_RECOVERY_DIR (Existing canonical owner-only absolute directory containing this agent's committed successor key; it must remain available for every agent open.). The author declared them in the registry entry; get the values from the project itself.

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Pigeonpost — questions

Answers built from our own checks of this server.

Why is there no uptime for Pigeonpost?
Pigeonpost 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 @bekirdag/pigeonpost was installed 566 times last week.
How do I connect Pigeonpost?
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 @bekirdag/pigeonpost straight from npm; nothing to host, nothing to sign up for.
How many people use Pigeonpost?
The npm package @bekirdag/pigeonpost was installed 566 times in the last week. Week over week that is +645%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Pigeonpost open source?
Yes — it is published under the MIT licence, written in Rust and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.