PenguinHarness
Let Agents Autonomously Build Better Agents for $0.02
PenguinHarness launched on July 23, 2026 with 62 votes, #583 of 24,623 launches that month and more than 95% of that year's launches.
What it does
PenguinHarness is an open-source self-improving harness built by the team behind LlamaFactory. Its AI-native SDK enables agents to build, evaluate, and optimize other agents. It supports 1,000+ models, reusable skills, tool and context management, automatic data generation, multi-agent evaluation, and closed-loop harness evolution. With one prompt and about $0.02, an agent can build a complete RAG application.
A zero-code CLI and Web UI for building AI agents, connected to 1,000+ models. Open source, local-first, and recursively self-improving.
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