mcp for Claude.ai

com.pcrzero/mcp

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

client:Claude.ai transport:streamable-http runtime:npm tools:3

Install mcp in Claude.ai

Settings → Connectors → Add custom connector

https://mcp.pcrzero.com/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

issue_receipt
verify_receipt
get_keyset

mcp in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

mcp MCP server