Best open-source agent skill libraries & SDKs

Open-source skills and plugins that teach AI agents such as Claude Code new, repeatable workflows.

Filters · 2 Agent skills, Library / SDK

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AI & LLM tooling138Agents & frameworks37Local inference10RAG & vector DBs29Coding assistants4Evals & observability7Agent skills4MCP servers6Developer tools179Web frameworks100Databases & backends15Editors & IDEs3API tools13Self-hosted apps6Notes & docs6Automation19Data & analytics25Infra & DevOps5Security & identity5Communication8Media & photos24Design & creative53

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Web1Docker / self-host1Desktop1Mobile0CLI10Library / SDK4Extension / plugin31

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Permissive4Copyleft0Source-available0Other / custom0

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Has live demo0Commit in last 90 days4

4 projects

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gpt-researcherassafelovic/gpt-researcher

Autonomous deep research agent for web and local documentsPersonalAgent skillsAgents & frameworksMCP serversRAG & vector DBsWeb★ 30kApache-2.0commit 7 days ago

85worth

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S

SkillOptmicrosoft/SkillOpt

Optimizer that trains reusable agent skillsPersonalEnterpriseAgent skillsEvals & observabilityLibrary / SDK★ 18kMITcommit 3 days ago

74worth

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D

DESIGN.mdgoogle-labs-code/design.md

Spec for describing a visual identity to coding agentsPersonalEnterpriseAgent skillsDesign & creativeLibrary / SDK★ 28kApache-2.0commit 2 months ago

72worth

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A

Agent Skills Specagentskills/agentskills

Specification for Agent SkillsPersonalEnterpriseAgent skillsLibrary / SDK★ 26kApache-2.0commit 2 months ago

62worth

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