lookup_postcode — Open Index MCP Tool Read-only
lookup_postcode
(lookup postcode) is one of 5 tools on the
Open Index
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call lookup_postcode from your client
- Claude Code Open Index lookup_postcode run in your project directory
- Claude Desktop Open Index lookup_postcode ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor Open Index lookup_postcode ~/.cursor/mcp.json
- VS Code Open Index lookup_postcode .vscode/mcp.json
- Zed Open Index lookup_postcode ~/.config/zed/settings.json
- Windsurf Open Index lookup_postcode ~/.codeium/windsurf/mcp_config.json
- Cline Open Index lookup_postcode ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI Open Index lookup_postcode ~/.gemini/settings.json
- Grok Open Index lookup_postcode .mcp.json (in your project root)
- ChatGPT Open Index lookup_postcode Settings → Connectors → Advanced → Developer mode
- Claude.ai Open Index lookup_postcode Settings → Connectors → Add custom connector
- LangChain Open Index lookup_postcode pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http open-index https://openindex.co.uk/mcpOther tools on this server
This list was read from the server itself, by connecting to it and calling tools/list on 20 October 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.