Apollo.io · Rate Limits
Apollo Io Rate Limits
Apollo.io applies request-rate limits per minute, per hour, and per day, scaled by plan tier (Basic / Professional / Organization). Search and enrichment endpoints additionally consume credits from a separate per-workspace monthly pool. When the request rate or credit pool is exhausted Apollo returns HTTP 429.
7 Limits
Throttle: 429
Sales IntelligenceB2B DataRate LimitingThrottling
Limits
Per Minute workspace
Per-minute request cap scaled by plan tier; tightest on Basic, loosest on Organization.
Per Hour workspace
Per-hour request cap scaled by plan tier.
Per Day workspace
Per-day request cap scaled by plan tier.
Search Credits workspace
Search-style endpoints (people search, organization search) draw from a monthly search-credit pool refreshed each billing cycle.
Enrichment Credits workspace
Enrichment endpoints consume a separate enrichment-credit pool; mobile reveals are billed against a dedicated mobile-credit pool.
Bulk Endpoint Discount request
Bulk enrichment endpoints (up to 10 records per call) cost less per-record than the single-record endpoints.
Webhook Delivery subscription
Webhook deliveries are retried on 5xx; receivers should respond 2xx within the platform timeout.
Policies
Backoff Strategy
Exponential backoff with jitter on 429. Inspect the x-rate-limit-* headers (minute / hour / day) for current usage.
Bulk Where Possible
Use bulk enrichment endpoints (up to 10 records) instead of single- record calls to lower per-record credit cost and round-trip count.
Credit Telemetry
Read the API Usage endpoint to monitor remaining credits and throttle in-app workloads accordingly.