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Stirrup

Lightweight Python framework and starting template for agents that let the model choose its own approach to each task.

Harness by ArtificialAnalysis

IndexedMIT★ 667
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pip install stirrup

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About

Stirrup is a lightweight Python framework and starting template for agents. The model chooses its own approach to a task instead of following a fixed workflow, and built-in tools cover web search and fetch, code execution locally, in Docker or in an E2B sandbox, and file input and output. It includes an MCP client, a skills system, a built-in user input tool for human feedback, automatic summarization of long conversations, and OpenAI-compatible APIs through OpenRouter or LiteLLM. A TypeScript implementation, StirrupJS, is maintained separately.

Use cases: agent-orchestration, web-search

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Fact sheet

Languages
Python, TypeScriptREADME
Packages
stirrup (pypi)README
MCP support
Built inREADME
Agent Skills support
Built inREADME
Human in the loop
YesREADME
Model providers
openrouterREADME
Maturity
Betagithub.com

Facts extracted by Claude Haiku 5.5 from the linked sources on Oct 24, 2026. Wrong fact? Tell us.

Alternatives

Frameworks for the same language with a similar way of orchestrating agents.

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Signals

Stars
667
Forks
64
Open issues
5
Weekly downloads
65,259
Last commit
Oct 22, 2026 (5 days ago)
Last release
Oct 22, 2026 (5 days ago)
Last package publish
Oct 22, 2026 (5 days ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Packages
pypi stirrup
License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Cite this page

Stirrup. Agent Mart. https://agentmart.dev/harnesses/stirrup (last updated 2026-10-24)