ATTOM · Rate Limits
Attomdata Rate Limits
ATTOM does not publish numeric per-second rate limits on its public developer portal. Trial keys are throttled to a capped number of total calls (daily and monthly), and production keys carry per-contract throughput. The policy entries below capture the visible policy posture; consumers should inspect the standard ATTOM error envelope for `code: 401/429/500` and consult their account team for negotiated limits.
Attomdata Rate Limits is the machine-readable rate-limit profile for ATTOM on the APIs.io network, conforming to the API Commons Rate Limits specification.
The profile also includes 3 backoff/retry policies defined.
Tagged areas include Real Estate, Property Data, Property Intelligence, Mortgage, and Assessment.
0 Limits
Real EstateProperty DataProperty IntelligenceMortgageAssessmentAVMForeclosureTransactionsOwner DataBuilding PermitsGeospatialBoundariesDemographicsNeighborhoodPOIInsuranceMortgage TechnologyPropTech
Policies
Trial Call Cap
Trial API keys are subject to a capped number of calls (daily and monthly).
The exact cap is documented to the developer at sign-up time and may change
without notice.
Production Throughput
Production API keys carry per-contract throughput (requests/second and
monthly call totals) negotiated with ATTOM sales. Consumers should expect
throttling at the gateway when contracted thresholds are exceeded.
Authentication Failure
Requests without the `apikey` header (or with an invalid key) are rejected
at the gateway with HTTP 401 and the ATTOM error envelope.