Magpie

Magpie is a developer tool that runs a local gateway to allow AI agents to use diverse language models by translating between API protocols.

Magpie runs a local gateway that translates between API protocols, allowing users to connect various AI agents with diverse model providers. It maps proprietary agent protocols, such as Anthropic Messages or OpenAI Responses, to the models of other vendors like DeepSeek, Kimi, or OpenRouter. The software manages multiple API keys and subscriptions, automatically routing requests based on reset schedules and quota availability to prevent failures. Users configure agent model settings through a menu bar interface, which surgically modifies local configuration files without disrupting formatting. It supports monitoring usage statistics like tokens and costs per agent and provides a terminal user interface for command-line users.

Magpie at a glance

Best for: Software engineer
Runs on: macOS, Windows, Linux
Pricing: Free, open source
Released: September 2026
Category: AI coding tool
Website: usemagpie.ai

Key features

Translates AI API protocols between agents and providers
Manages multiple API keys and subscriptions
Routes requests based on provider quotas and reset schedules
Edits agent configuration files surgically
Tracks usage costs and tokens per agent
Includes a terminal user interface and command-line interface
Supports any client with a base-URL setting

Use it for

Connecting unsupported models to specific AI agents
Balancing usage across multiple AI account subscriptions
Switching agent models via a menu bar interface
Managing automatic failover when an account hits rate limits

Companions

Tools that articles about Magpie recommend using with it, each with its job.

Context7 — Provides up-to-date documentation for AI agents and code editors.
Ollama — Run local models at zero marginal cost, with code kept on your machine.
OpenRouter — Access over 500 models and 80 providers through one unified API.
Daytona — Runs sessions in isolated sandboxes synced to git branches.
Composio — Equips AI agents with tools, managed user auth, and sandboxes across 1,500+ apps
Oh My OpenCode Slim — Lightweight multi-agent orchestration and background tasks.

Alternatives to Magpie

AG-UI — Standardizes agent-user interactions and generative UI for applications.
fast-agent — Improves agent accuracy and cost efficiency via MCP integration.
OpenCode — Works with 75+ model providers, local models, and existing subscriptions
Genkit — Provides unified APIs and local developer tools for AI application workflows.
jevgrep — Reduces coding agent costs by providing targeted, relevant repository context.
Marmot — Consolidates multiple AI and data provider interfaces into one CLI.
pstack — Improves AI coding agent outcomes with rigorous workflows.
SmallCode — Runs fully local with budget-managed context and a forgiving parser for small models.
AI SDK — Switch providers easily and stream real-time responses without custom parsing.
Codex Host — Runs different AI coding assistants simultaneously in the native Codex Desktop window.
Atomic Agents — Build predictable, modular AI applications with consistent, reliable outputs.
Alma — Manage coding agents and models across your desktop and iPhone.

All Magpie alternatives