SpecBridge is an MCP server that turns OpenAPI specifications into MCP tools. It scans a folder for OpenAPI spec files and automatically generates corresponding tools. There are no configuration files or separate servers required—drop your specs into a folder and SpecBridge will expose them as MCP tools. Built with FastMCP for TypeScript, it supports multiple transports (stdio and HTTP streaming) and can be run via the CLI or integrated into MCP client configurations. Authentication is auto-detected from environment variables using patterns like {API_NAME}_API_KEY, {API_NAME}_TOKEN, or {API_NAME}_BEARER_TOKEN, enabling API key or Bearer token schemes. Tools are named automatically based on the operationId when present, or derived from the API name, HTTP method, and path segments, and namespace isolation ensures multiple APIs can coexist without conflicts (e.g., petstore_getPet, github_getUser). The server provides full OpenAPI feature support, including parameters, request bodies, authentication, and responses, and includes a built-in debugging command to list loaded specs and tools. The README also covers quick start steps, authentication patterns, and troubleshooting guidance for a smooth setup.