Bring type safety to your agent stack. Build Python agents with structured outputs and a familiar developer experience.
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Pydantic AI
smolagents
Google ADK
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Harnessrouter
HarnessRouter Community Edition: the self-hosted, Apache-2.0 edition of the unified interface for agent harnesses. Run Codex, Claude Code, Hermes, PI, DSH, and more through one API, with sessions, streaming, files, cancellation, and failure handling. Implements the Unified Harness Protocol (UHP), an open standard. Your keys, your infrastructure.
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FrameworksA code-first toolkit for building, evaluating, and deploying agents, from a single task to a multi-agent system.
Frameworks