Postcept MCP Server: Install & Setup

Install Postcept in Claude Code

Claude Code

claude mcp add postcept -e POSTCEPT_API_KEY=... -- npx -y @postcept/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

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

Replace each ... with your own value.

Frequently asked questions

What does the Postcept MCP server do?

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

Is the Postcept MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Postcept run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Postcept to Claude Code?

Run: claude mcp add postcept -e POSTCEPT_API_KEY=... -- npx -y @postcept/mcp

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