com.pcrzero/mcp MCP Server

com.pcrzero/mcp

Repository Registry

What is the com.pcrzero/mcp MCP server?

Issue signed receipts for AI agent actions; verify any receipt offline - free, no account.

How to install com.pcrzero/mcp

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

PCRZERO_API_KEY
secret
PCRZERO API key (ak_live_… / ak_test_…). Optional for stdio free tools; required for issue_receipt. In streamable-http client_key mode, prefer per-request Authorization header instead.
PCRZERO_MCP_TRANSPORT
Set to http to enable streamable-http transport (default stdio).
PCRZERO_MCP_AUTH_MODE
HTTP auth mode: client_key (default, per-request API key header — required for remote/Bazaar) or env_key (loopback sidecar only).
Authorization
secret
Bearer ak_live_… / ak_test_…. Required only for issue_receipt. verify_receipt and get_keyset work without it.

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

{
  "mcpServers": {
    "mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@scytalex-llc/pcrzero-mcp"
      ],
      "env": {
        "PCRZERO_API_KEY": "<YOUR_PCRZERO_API_KEY>",
        "PCRZERO_MCP_TRANSPORT": "<YOUR_PCRZERO_MCP_TRANSPORT>",
        "PCRZERO_MCP_AUTH_MODE": "<YOUR_PCRZERO_MCP_AUTH_MODE>",
        "Authorization": "<YOUR_AUTHORIZATION>"
      }
    }
  }
}

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