lookup_postal_code — Postal Codes MCP Tool Read-only
lookup_postal_code
(lookup postal code) is one of 1 tool on the
Postal Codes
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call lookup_postal_code from your client
- Claude Code Postal Codes lookup_postal_code run in your project directory
- Claude Desktop Postal Codes lookup_postal_code ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor Postal Codes lookup_postal_code ~/.cursor/mcp.json
- VS Code Postal Codes lookup_postal_code .vscode/mcp.json
- Zed Postal Codes lookup_postal_code ~/.config/zed/settings.json
- Windsurf Postal Codes lookup_postal_code ~/.codeium/windsurf/mcp_config.json
- Cline Postal Codes lookup_postal_code ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI Postal Codes lookup_postal_code ~/.gemini/settings.json
- Grok Postal Codes lookup_postal_code .mcp.json (in your project root)
- ChatGPT Postal Codes lookup_postal_code Settings → Connectors → Advanced → Developer mode
- Claude.ai Postal Codes lookup_postal_code Settings → Connectors → Add custom connector
- LangChain Postal Codes lookup_postal_code pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http postal-codes https://invokera.com/r/postal-codes
This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.