pydantic-ai-skills
A companion library that adds remote skill registries and sandboxed execution of bundled files to Pydantic AI's Agent Skills support, for agents that load instructions and resources only when a task needs them.
pydantic-ai-skills extends pydantic-ai-harness's support for Agent Skills — folders holding a SKILL.md description plus reference documents and scripts — with remote registries over Git and S3 (with filtering, prefixing, renaming and merging), execution of a skill's bundled reference documents and scripts through read_skill_resource and run_skill_script, sandboxed execution to keep untrusted scripts off the host, resolution of the ${SKILL_DIR} placeholder, and skills defined directly in Python.
It requires the harness package and delegates SKILL.md parsing, validation, the catalog and instruction rendering to it, so projects that only need plain instruction-based skills can use harness alone. Version 2 removed the older SkillsToolset and SkillsDirectory APIs in favor of harness's own load_capability.