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, in the API Commons Rate Limits shape.

It captures 1 rate-limit definition.

This profile was written by API Evangelist and has not been verified against a page the provider published; treat every limit as unconfirmed until a dated transcription replaces it.

Tagged areas include Federal Regulations, Government, Legal, Compliance, and Open Data.

1 Limits
Method: generated.
Written by API Evangelist and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
View Source
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

Work with this as data

Every rate limit here is available over the APIs.io API and to AI agents over MCP.

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Tools for rate limits

4 MCP tools reach this
  • find_rate_limitsBrowse and filter every rate limit in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This rate limit 
curl "https://apis.io/api/v1/rate-limits/ecfr-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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