# Run Apichief

> Run ApiChief against libraries matching a pattern to emit baselines, summaries, deltas, reviews, or check for breaking changes

- Skill: `dotnet/run-apichief-2` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add dotnet/run-apichief-2`
- Raw SKILL.md: https://api.skillmd.com/api/skills/dotnet/run-apichief-2/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: .NET (Microsoft) (https://skillmd.com/u/dotnet)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/dotnet/run-apichief-2

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# Run ApiChief

Run the [ApiChief tool](../../../eng/Tools/ApiChief/README.md) against one or more libraries in `src/Libraries`.

The user might provide a shorthand or abbreviated reference to the library or libraries in scope (e.g. "MEAI" for `Microsoft.Extensions.AI`). Match their intent against the folder names in `src/Libraries/`.

## Steps

Follow the detailed [execution steps](references/apichief-steps.md).