IEX Cloud · Rate Limits

Iex Cloud Rate Limits

IEX Cloud sunset on 2024-08-31. Historically the platform did not enforce per-second request caps; instead each endpoint cost a number of "messages" against the monthly message allowance. Documented hard limits included a connection cap of 50 concurrent requests and 100 messages per second per token on the free tier. Information preserved for migration reference.

3 Limits Throttle: 429
FintechMarket DataSunsetRate Limiting

Limits

Concurrent requests (sunset) token
concurrent_connections
50
Per-second cap (Launch, sunset) token
requests_per_second
100
Monthly message allowance account
messages_per_month
-1
See plan tier; usage was metered as messages per endpoint call, not request count.

Policies

Sunset
Service end-of-life on 2024-08-31; rate limits no longer enforced because endpoints unreachable.

Sources