AppDog MCP Server

What is AppDog?

AppDog is a Python package that automatically generates fully typed async API clients and ready-to-use MCP (Model Context Protocol) servers from any OpenAPI specification. It simplifies working with OpenAPI-based APIs and managing multiple API clients in a single project with version locking.

How to use AppDog?

Install with uv add appdog, then use the CLI: initialize a project with appdog init, add an API client with appdog add NAME --uri URI, list clients with appdog list, show details with appdog show, and generate an MCP server with appdog mcp install. Generated clients are imported directly (e.g., import appdog.petstore) and can be used with async context managers.

Key features of AppDog

• Generates fully typed async Python clients from OpenAPI specs
• Creates ready-to-use MCP servers for API integrations
• Manages multiple API clients with version locking
• Simple CLI for adding, removing, and managing APIs
• Supports custom authentication via environment variables or headers
• Allows filtering methods and tags during client generation

Use cases of AppDog

• Generate a typed client and MCP server for a public REST API in minutes
• Compose multiple OpenAPI-based APIs into a single MCP server for AI agents
• Quickly prototype API integrations with Claude Desktop via MCP