Harness-engineering api-conditional-requests

name: api-conditional-requests version: '1.0.0' description: If-None-Match, If-Modified-Since, If-Match conditional headers, 304 Not Modified, and optimistic concurrency control stability: static cognitive_mode: advisory-guide type: knowledge tier: 3 triggers:

• manual platforms:
• claude-code
• gemini-cli
• cursor
• codex tools: [] paths: [] related_skills:
• api-http-caching
• api-http-methods
• db-optimistic-locking
• api-status-codes stack_signals:
• rest
• api
• http keywords:
• conditional-requests
• If-None-Match
• If-Modified-Since
• If-Match
• ETag
• Last-Modified
• '304'
• optimistic-concurrency metadata: author: community upstream: developer.mozilla.org/en-US/docs/Web/HTTP/Conditional_requests state: persistent: false files: [] depends_on: []