Polygon.io · Rate Limits

Polygon Io Rate Limits

The Polygon.io Basic (Free) plan is hard-capped at 5 API requests per minute. Paid Stocks, Options, Indices, Forex, Crypto, and Futures plans (Starter, Developer, Advanced) advertise unlimited API requests. WebSocket cluster connections are also tier-gated. Throttled responses return HTTP 429 with a Retry-After header.

Polygon Io Rate Limits is the machine-readable rate-limit profile for Polygon.io on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 4 rate-limit definitions, measuring requests_per_minute and concurrent_connections.

The profile also includes 2 backoff/retry policies defined and response codes documented for throttled.

Tagged areas include Fintech, Market Data, Stocks, Options, and Crypto.

4 Limits Throttle: 429
FintechMarket DataStocksOptionsCryptoRate Limiting

Limits

Basic (Free) plan api_key
requests_per_minute
5
Hard cap on Free tier across REST.
Paid Stocks/Options/Forex/Crypto plans api_key
requests_per_minute
-1
Advertised as unlimited; soft fair-use applies.
WebSocket connections (Starter) api_key
concurrent_connections
1
Free/Starter limited to a single WebSocket cluster connection.
WebSocket connections (Advanced) api_key
concurrent_connections
-1
Higher tiers permit multiple cluster connections.

Policies

Backoff Strategy
On 429, honor Retry-After and apply exponential backoff with jitter.
Connection Reuse
Reuse WebSocket connections; do not open per-message connections.

Sources