CMS — Centers for Medicare & Medicaid Services · Rate Limits
Cms Gov Rate Limits
Rate limit policies across CMS APIs. The Blue Button 2.0 API is the only CMS API that publishes a per-application rate limit. BCDA, AB2D, and DPC throttle by concurrent in-flight bulk export jobs rather than per-request limits. The Marketplace API and data.cms.gov apply best-effort fair-use throttling without published numbers.
Cms Gov Rate Limits is the machine-readable rate-limit profile for CMS — Centers for Medicare & Medicaid Services on the APIs.io network, conforming to the API Commons Rate Limits specification.
The profile also includes 6 backoff/retry policies defined.
Tagged areas include Healthcare, Medicare, Medicaid, FHIR, and Bulk Data.
0 Limits
HealthcareMedicareMedicaidFHIRBulk DataOpen DataGovernmentFederalClaimsInsuranceACAMarketplaceQuality
Policies
Blue Button 2.0 per-application throttling on the production FHIR R4 endpoint.
BCDA throttles by concurrent jobs per ACO, not by request rate.
AB2D throttles by concurrent jobs per contract.
DPC sandbox and production both throttle bulk jobs per organization.
Marketplace API applies fair-use throttling; specific numbers are not published.
data.cms.gov data-api applies best-effort throttling.
Work with this as data
Every rate limit here is available over the APIs.io API and to AI agents over MCP.