Skill Body Length

skill-body-length

Skill body is very long (over ~5000 words).

Rule definition

The full Spotlight rule — drop it into a ruleset (.spotlight.yaml / .spectral.yaml) and run it with any Spotlight tool.

skill-body-length:
  title: Skill Body Length
  reference: https://spotlight-rules.com/spec/rules/agent-skill/skill-body-length/
  description: Skill bodies should stay focused — very long instructions degrade
    agent performance. Keep the body under ~5000 words.
  message: Skill body is very long (over ~5000 words).
  severity: info
  given: $.words
  then:
    function: schema
    functionOptions:
      schema:
        type: integer
        maximum: 5000
  tags:
    - format:agent-skill
    - spec:body
    - experience:usability
    - experience:reliability
  prompt: "You are editing an Agent Skill document to satisfy the Spotlight API
    governance rule 'skill-body-length' (Skill Body Length). Requirement: Skill
    bodies should stay focused — very long instructions degrade agent
    performance. Keep the body under ~5000 words. To fix: Adjust the targeted
    value so it conforms to the schema this rule requires. This rule is
    evaluated at the JSONPath `$.words` — inspect every location it matches and
    correct only what violates the rule. Make the smallest change that satisfies
    the rule, leave all unrelated content, key order, comments, and formatting
    unchanged, and keep the document valid Agent Skill. Return only the complete
    corrected document, with no commentary."

You are editing an Agent Skill document to satisfy the Spotlight API governance rule 'skill-body-length' (Skill Body Length). Requirement: Skill bodies should stay focused — very long instructions degrade agent performance. Keep the body under ~5000 words. To fix: Adjust the targeted value so it conforms to the schema this rule requires. This rule is evaluated at the JSONPath `$.words` — inspect every location it matches and correct only what violates the rule. Make the smallest change that satisfies the rule, leave all unrelated content, key order, comments, and formatting unchanged, and keep the document valid Agent Skill. Return only the complete corrected document, with no commentary.