Cloudflare now returns RFC 9457-compliant structured Markdown and JSON error payloads to AI agents, replacing heavyweight HTML pages with machine-readable instructions. This reduces token usage by over 98%, turning brittle parsing into efficient control flow.

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Cloudflare now returns RFC 9457-compliant structured error responses (JSON and Markdown) to AI agents instead of HTML error pages. By sending an appropriate Accept header (text/markdown, application/json, or application/problem+json), agents receive compact, machine-readable payloads with actionable fields like retryable, retry_after, and owner_action_required. This reduces payload size and token usage by over 98% compared to HTML. The feature is live network-wide with no configuration required from site owners, covering all 1xxx-class Cloudflare error codes, with 4xx/5xx coverage planned next. A Python example demonstrates how agents can parse YAML frontmatter to implement deterministic retry and escalation logic.

Slashing agent token costs by 98% with RFC 9457-compliant error responses