best-practices-for-agent-skills

Agent skill frontmatter validation requires checking the name and description fields for exact structure, ensuring trigger phrases support robust routing, and verifying that heavy context is offloaded to keep the SKILL.md body lean.

The best way to structure an agent skill SKILL.md is placing name and description in the frontmatter, keeping the body lean, and offloading heavy context to optional references/, scripts/, and assets/ directories loaded on demand.

No dependencies are required to author agent skills. You only need to create a SKILL.md file with optimized YAML frontmatter and optional references/, scripts/, or assets/ directories to ensure discoverability and reliable execution.

Use references/, scripts/, and assets/ directories during skill authoring when you need to offload heavy context from the lean SKILL.md body, allowing the agent to load complex instructions or assets on demand.

Agent skills fail to trigger reliably when the YAML frontmatter lacks optimized naming conventions, clear trigger phrases, or structured instructions needed to support robust agent routing and deterministic behavior.

Yes, you can adapt existing markdown files into agent skills by adding validated YAML frontmatter with name and description fields, restructuring the body to be lean, and moving heavy context to references or scripts.