How do I install mcp?

Pick a client above and copy the generated config. Cursor and VS Code also have a deep link when the server can run locally or remotely.

No. Registry-listed is not the same as vendor-official. Read the methodology for the difference.

How is the trust score calculated?

This listing scores 50 (Fair). The formula is published on the methodology page.

MCPpedia

mcp MCP Server — Install for Claude, Cursor & VS Code | MCPpedia

mcp MCP Server

Name: mcp MCP Server
Author: scytalex-llc

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

Tools Versions Alternatives

RegistryRemotescytalex-llc

50Fair

Install

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

{
  "mcpServers": {
    "scytalex-llc-pcrzero-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@scytalex-llc/pcrzero-mcp@0.2.0"
      ],
      "env": {
        "PCRZERO_API_KEY": "YOUR_PCRZERO_API_KEY"
      }
    }
  }
}

Install guide

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pagespeed-insights-mcp

75Good

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Environment

Name	Required	Notes
PCRZERO_API_KEY	No	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. Secret.
PCRZERO_MCP_TRANSPORT	No	Set to http to enable streamable-http transport (default stdio).
PCRZERO_MCP_AUTH_MODE	No	HTTP auth mode: client_key (default, per-request API key header — required for remote/Bazaar) or env_key (loopback sidecar only).
PCRZERO_API_KEY	No	Optional process env API key for env_key (loopback) mode only. Never used as a shared multi-client key in client_key mode. issue_receipt always requires a key. Secret.

mcp MCP Server

Install

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pagespeed-insights-mcp

Environment

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