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.

Iex Cloud Rate Limits is the machine-readable rate-limit profile for IEX Cloud on the APIs.io network, in the API Commons Rate Limits shape.

It captures 3 rate-limit definitions, measuring concurrent_connections, requests_per_second, and messages_per_month.

An exhausted limit returns HTTP 429.

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.

The profile also includes 1 backoff/retry policy defined and response codes documented for throttled.

Tagged areas include Fintech, Market Data, Sunset, and Rate Limiting.

3 Limits Exhausted: HTTP 429
Method: generated, dated 2026-05-08.
Written by API Evangelist on 2026-05-08 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
View Source
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

Work with this as data

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

MCP server

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https://apis.io/mcp

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/iex-cloud-rate-limits"
All rate limits 
curl "https://apis.io/api/v1/rate-limits?limit=25"

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