agent-skills

Ecore model of agent skills.

Model

The Ecore model is located at model/model/agent-skills.ecore.

Classes

Skill

The root class representing an agent skill as described by a SKILL.md file.

Attributes:

• name (required) — Lowercase kebab-case skill identifier, 1–64 characters. Must match the parent directory name.
• description (required) — Concise description of what the skill does and when to use it. 1–1024 characters.
• compatibility (optional) — Which agents or environments the skill supports. Up to 500 characters.
• body (optional) — Markdown body content of SKILL.md that follows the YAML front-matter.

References:

• license (0..1, containment) — The license under which this skill is published. See License.
• allowedTools (0..*, containment) — Tools the agent may invoke while running this skill. See AllowedTool.
• metadata (0..*, containment) — Arbitrary key-value author/client properties. See MetadataEntry.

License

Represents the software license of a skill.

Attributes:

• name (required) — SPDX license identifier (e.g. MIT, Apache-2.0).
• url (optional) — URL to the full license text.

AllowedTool

A single tool name that the agent is permitted to call when executing the skill. Corresponds to one token in the space-delimited allowed-tools front-matter field (e.g. Read, Write, Edit, Bash, WebFetch).

Attributes:

• name (required) — The tool name.

MetadataEntry

A single key-value pair from the metadata front-matter map.

Attributes:

• key (required) — The metadata key (e.g. version, author).
• value (optional) — The metadata value.