Before choosing a Skill, your Agent reads its name and description. All available Skills share that space.
- A shorter description leaves more room for other Skills. This entry exceeds our 1% size suggestion.
In our Claude Code example, all Skill names and descriptions share 8,000 characters. This Skill uses ≈242 characters, or 3.0%.
The 1% threshold is a size suggestion. Longer descriptions can still fit.
Your model, settings, and other Skills decide how much text your Agent can read.
Example settings and source
The example uses a 200k-token context and default Claude Code settings. The count includes the name, description, separators, and when_to_use when present. Codex also counts local file paths.
Skit's source and limits: Codex 0.160.1, Claude Code 2.1.292.