eCFR · Rate Limits
Ecfr Rate Limits
The eCFR API is a free government service. While no formal rate limit policy is published, the API enforces automated scraping restrictions via IP-based blocking. Direct API access is permitted and encouraged as the recommended alternative to web scraping. No authentication or API key is required.
Ecfr Rate Limits is the machine-readable rate-limit profile for eCFR on the APIs.io network, conforming to the API Commons Rate Limits specification.
It captures 1 rate-limit definition.
Tagged areas include Federal Regulations, Government, Legal, Compliance, and Open Data.
1 Limits
Federal RegulationsGovernmentLegalComplianceOpen DataUnited States
Limits
Public API Access
Automated scraping of the ecfr.gov website is restricted and may redirect to unblock.federalregister.govREST API endpoints at www.ecfr.gov/api/* are freely accessible without authenticationNo API key or registration requiredResponse headers do not include rate limit headers (X-RateLimit-Limit, X-RateLimit-Remaining)Large content responses (full title XML) may be cached via CDN (age header present in responses)Good-faith reasonable use is expected for a government public service