AI stackHarnesses

goose

Harness · terminal agent

The jobOpen-source agent for coding and workflow automation: desktop app, CLI and APIVisit github.com

Best forOne open-source agent for code and other automation, local or hosted models

Skip ifYou want the agent built into your editor, or one vendor handling model billing

Verified Oct 5, 20262 sourcesLive

goose also appears in Alternatives to OpenAI Codex

Editor notes

A general-purpose open-source agent rather than a coding-only tool: desktop app, CLI and API, with MCP extensions for wider automation. The tool is free; you pay your model provider or reuse a subscription via ACP. It is now governed by the Agentic AI Foundation at the Linux Foundation.

Open-source, general-purpose AI agent (desktop, CLI, API), now under the Linux Foundation AAIF.

Summary

goose is an open-source agent written in Rust that can code, run workflows and automate tasks, available as a desktop app, a CLI and an embeddable API. It works with 15+ model providers or existing Claude/ChatGPT/Gemini subscriptions via ACP, and connects to 70+ extensions through MCP. Originally built at Block, it is now part of the Agentic AI Foundation (AAIF) at the Linux Foundation.

Key details

Surface	desktopCLIAPI
Platforms	macoslinuxwindows
BYOK (Bring Your Own Key)	✓ Yes
MCP Support	✓ Yes
Agent Skills Support	✗ No
Open Source	✓ Yes(Apache-2.0)

Installation

Terminal

curl -fsSL https://github.com/aaif-goose/goose/releases/download/stable/download_cli.sh | bash

Repository

Pricing

From the vendor's pricing pageVerified Oct 5, 2026

Plan	Price	Basis
Open source	Free

Sources

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