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Goose

Open-source extensible AI agent by Block

open sourceupdated Aug 16, 2026

Autonomous coding agent from Block (Square) that works with any LLM through MCP-first extensibility. Apache 2.0 licensed with 47K+ GitHub stars and a Linux Foundation AAIF founding project. Designed for terminal-based workflows with deep tool integration, making it a strong open-source option for developers who want agent-assisted coding without vendor lock-in.

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Goose is an open-source AI agent framework developed by Block that enables developers to connect large language models to real-world actions including building projects from scratch, writing and executing code, debugging failures, and orchestrating complex workflows. It goes beyond code suggestions by acting as a true autonomous agent that reads and writes files, runs code and tests, installs dependencies, and handles additional actions as needed, all in real time within the development environment. Goose was designed to be the most interoperable and extensible AI coding agent available, built on the open Model Context Protocol developed in collaboration with Anthropic.

Goose works with any LLM and supports multi-model configuration to optimize performance and cost, with seamless MCP server integration for connecting to any external system through simple extensions. It is available as both a desktop application and a CLI, supports named sessions with full chat history, subagents for parallel task execution, and custom skills for adding project-specific context. Unlike cloud-based AI solutions, Goose can operate entirely locally on a developer's machine, keeping sensitive code and data private. Its modular design means developers can extend its capabilities without modifying the core framework.

Goose is designed for developers who want a flexible, open-source AI agent that can be customized to fit any workflow and integrated with any toolchain through the Model Context Protocol. It is particularly valuable for teams that use multiple AI models and want the ability to switch between or combine them based on task requirements and cost considerations. Compared to proprietary AI coding agents, Goose offers complete transparency and control over the agent's behavior, making it the natural choice for developers and organizations that prioritize open-source tooling and local-first development practices.

Pricing

Free (bring your own API key)

Platforms

CLI, Desktop app (macOS, Linux, Windows)

Categories

Tags

Use Cases

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Used in Stacks

Comparisons

Claude Code vs Goose: Proprietary Coding Agent or Open-Source BYO-Model Workflow?

Claude Code and Goose both turn the terminal into an agentic coding workspace, but they make opposite trade-offs. Claude Code is Anthropic's polished Claude-native CLI with deep codebase reasoning, project memory, hooks, and managed subscription access. Goose is Block's open-source, MCP-first agent that lets teams bring their own models and local or cloud providers. Pick Claude Code for maximum coding quality and workflow polish; pick Goose for openness, model choice, and self-directed infrastructure.

Hermes Agent vs Goose: Persistent AI Teammate or Native Open-Source Agent?

Hermes Agent and Goose are both open-source AI agent projects, but they serve different instincts. Goose is a strong fit for developers who want a native local desktop and CLI agent. Hermes Agent is stronger when you want persistent memory, reusable skills, scheduled jobs, messaging gateways, and multi-system workflow automation that keeps improving across sessions.

Goose vs Aider vs Claude Code — Terminal AI Coding Agent Comparison

Terminal-based AI coding agents are the power user's alternative to IDE-based assistants, offering autonomous code editing, command execution, and workflow automation from the command line. Goose, Aider, and Claude Code represent three philosophies: MCP-driven workflow orchestration, model-agnostic git-aware editing, and frontier-model reasoning. This comparison helps you choose based on your priorities.

FAQ

What is Goose?

Autonomous coding agent from Block (Square) that works with any LLM through MCP-first extensibility. Apache 2.0 licensed with 47K+ GitHub stars and a Linux Foundation AAIF founding project. Designed for terminal-based workflows with deep tool integration, making it a strong open-source option for developers who want agent-assisted coding without vendor lock-in.

Is Goose free?

Yes — Goose is open source and free to use. Free (bring your own API key)

Is Goose open source?

Yes — Goose is open source.

What are the best Goose alternatives?

The top editor-verified Goose alternatives are OpenCode, Crush, Suna, and more.

How does Goose score in our review?

Our hands-on review scores Goose 84/100 overall, based on speed, privacy, and developer-experience testing.