agent-identifier

Validating agent frontmatter requires checking that mandatory fields like name and description exist in SKILL.md and follow standard formats. This skill enforces naming rules, field structures, and namespace guidance to ensure consistent agent discovery and tooling interactions.

Claude Code agent identifiers must use lowercase letters, digits, and hyphens, with a length between 3 and 50 characters. This standardization ensures reliable namespace scoping and consistent discovery across the ecosystem.

Creating a canonical tagline and namespace involves generating standardized frontmatter that clearly describes the agent's purpose. This skill provides namespace guidance and tagline formulation rules to scope agents reliably within Claude Code ecosystems.

The required fields in SKILL.md frontmatter are name and description, which must clearly define the agent. Optional fields include namespace guidance, scripts, references, and assets, alongside a toxicity check to guard against unsafe content.

Yes, the agent metadata validator includes a toxicity check to guard against unsafe content during the frontmatter validation process. This ensures that generated identifiers, taglines, and descriptions meet safety standards before namespace assignment.

Namespace validation fails when agent names violate formatting rules, such as using uppercase letters, special characters, or exceeding the 3-50 character limit. The validator enforces strict lowercase, digit, and hyphens-only naming conventions for reliable tooling.