Description
ThinHarness is a minimal, opinionated Python harness for purpose-built agents. It gives you the agent-loop primitives that are tedious to rebuild — scoped filesystem tools, structured output, retries, approvals, subagents, MCP, streaming, and tracing — in under 8k LOC, and leaves orchestration, auth, storage, and deployment to your app. Pre-1.0, open source (MIT), Python.…
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Highlights
- Scoped filesystem tools
- Structured output
- Tool retries
- Human approvals
- Subagents
- Parallel LLM calls
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ThinHarness FAQ
What is ThinHarness?
ThinHarness is a minimal, opinionated Python harness for purpose-built agents. It gives you the agent-loop primitives that are tedious to rebuild — scoped filesystem tools, structured output, retries, approvals, subagents, MCP, streaming, and tracing — in under 8k LOC, and leaves orchestration, auth, storage, and deployment to your app. Pre-1.0, open source (MIT), Python.
Is ThinHarness free?
Yes. ThinHarness is free to use.
Do I need to download ThinHarness?
No. ThinHarness runs in your browser at ryanbbrown.com, so there's nothing to install.
What can you do with ThinHarness?
Main features: Scoped filesystem tools, Structured output, Tool retries, Human approvals, Subagents.
What are the best ThinHarness alternatives?
Popular alternatives to ThinHarness include ego lite, Hexabot and Skillry. See all ThinHarness alternatives