Header category
Cost & Metering
Headers reporting what a call cost — credits, tokens, units. Almost entirely vendor-defined, and increasingly the surface an AI agent budgets against.
0 headers
0 provider declarations
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All categories
Authentication Authorization & Scope Caching Conditional Requests & Concurrency Content Negotiation Representation Metadata Connection & Transport CORS Security Policy Privacy & Consent Rate Limiting & Quota Tracing & Correlation Idempotency & Reliability Versioning & Lifecycle Integrity & Signing Async & Long-Running Cost & Metering Agent & Bot Identity