{"rule_id":"AB-045","category":"infrastructure","icon":"⚡","title":"Cache Headers","short_description":"Your site sends cache headers so agents and CDNs know how to cache your content.","user_value":"Proper caching means faster responses for agents and lower server costs for you.","wrong_example":"No cache headers. Every request hits your server, slowing agents down.","right_example":"Cache headers enable efficient caching, speeding up agent requests.","effort_hint":"quick","estimated_cost":"$0","severity":"medium","pillar":"verifiability","version":"1.0.0","counted_in_score":true,"check":{"type":"header_check","sources":["content_negotiation"],"target":"/"},"fix":{"eligible":true,"type":"deterministic","note":"Add Cache-Control header to responses"},"checklist_anchor":"#AB-045","checklist_url":"/agent-readiness-checklist#AB-045","html_url":"/rules/AB-045","json_url":"/rules/AB-045.json","related_rules":[{"rule_id":"AB-046","title":"Structured 404 Errors","category":"infrastructure"},{"rule_id":"AB-047","title":"Rate Limit Headers","category":"infrastructure"},{"rule_id":"AB-073","title":"HTTPS Redirect Enforced","category":"infrastructure"},{"rule_id":"AB-098","title":"Content-Security-Policy header","category":"infrastructure"},{"rule_id":"AB-099","title":"Referrer-Policy header","category":"infrastructure"}]}