Postcept MCP Server

by postcept Your server? Claim it

local only

Postcept runs on your own machine — the client starts it, so there is no endpoint to ping. 43 installs a week from npm. Last commit 22 Jul 2026.

Verify agent actions against the system of record and get signed completion receipts.

Installs per day peak 18 · avg 8 · +50% w/w

a month agotoday

Installs / week

npm · @postcept/mcp

Stars

0 open issues

22 Jul 2026

Last commit

0 releases in 90 days

MIT

License

JavaScript

Nothing serious here today

Today is the operative word: we check Postcept 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 mcp -- npx -y @postcept/mcp

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

{
  "mcpServers": {
    "mcp": {
      "args": [
        "-y",
        "@postcept/mcp"
      ],
      "command": "npx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.mcp]
command = "npx"
args = ["-y", "@postcept/mcp"]

.cursor/mcp.json

{
  "mcpServers": {
    "mcp": {
      "args": [
        "-y",
        "@postcept/mcp"
      ],
      "command": "npx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "mcp": {
      "args": [
        "-y",
        "@postcept/mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: POSTCEPT_API_KEY (Postcept API key). The author declared them in the registry entry; get the values from the project itself.

Alternatives to Postcept

same job, measured the same way

Pcrzero

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Issue & verify signed (ed25519), hash-chained, timestamped provenance receipts for agent actions.

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Kasbah MCP

by al-adnane

Governance layer for agentic AI — signed, verifiable receipts for every agent action.

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three.ws Provenance

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Append-only, signed, on-chain-verifiable agent action log — record and audit what agents did.

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Proof Layer

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Signed, hash-chained provenance receipts for AI agent actions.

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Postcept — questions

Answers built from our own checks of this server.

Why is there no uptime for Postcept?

Postcept 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 @postcept/mcp was installed 43 times last week.

How do I connect Postcept?

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 @postcept/mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Postcept?

The npm package @postcept/mcp was installed 43 times in the last week. Week over week that is +50%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Postcept open source?

Yes — it is published under the MIT licence, written in JavaScript and 1 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.