# Tooling & connections [Back to README](../README.md) | | Convention | Files | Read by | Spec | | --- | --- | --- | --- | --- | | 🟢 | [MCP server config](../conventions/mcp-config/) | `.mcp.json` | Claude Code, Cursor, VS Code / Copilot, and Claude Desktop - every MCP host reads the same mcpServers schema, though the filename and path differ per tool | [spec ↗](https://code.claude.com/docs/en/mcp) | ## [MCP server config](../conventions/mcp-config/) A JSON file that tells an agent which Model Context Protocol servers to launch and how (command, args, env) - making a project's tool and data integrations portable, shareable, and version-controlled across every MCP-capable client.