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Agent Harness

Goose

  • Open source (Apache-2.0)
  • Self-hosted
  • 54.3k

Verified Sep 2026

Block's extensible AI agent

Modular agent from Block (Square) that connects MCP tools to automate dev workflows from CLI or desktop.

Block's open-source extensible agent: local-first, MCP-native, runs tasks across your desktop/IDE. The enterprise-employee's hackable agent.

Who it's for

Developers who want an open-source, extensible local agent that runs any tool via MCP.

Keep exploring

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Goose features

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Goose is written in

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Goose implements

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Goose is an alternative to