Market Data · Rate Limits

Marketdata App Rate Limits

Market Data governs usage with an API-credit model rather than a simple requests-per-second limit. Every successful call costs at least one credit, and the multi-symbol endpoints (stocks/bulkquotes, stocks/bulkcandles, options/chain, stocks/quotes) consume one credit for each symbol returned in the response - so a full option chain can cost thousands of credits. Free, Starter, and Trader plans enforce a daily credit cap that resets at 9:30 AM Eastern; Quant and Prime remove the daily cap and apply a per-minute credit ceiling instead. Across all plans there is a hard limit of 50 simultaneous requests, and an account may only be used from a single IP address at a time.

Marketdata App Rate Limits is the machine-readable rate-limit profile for Market Data on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 7 rate-limit definitions, measuring requests, credits, and connections.

The profile also includes 4 backoff/retry policies defined and response codes documented for throttled and cached.

Tagged areas include Market Data, Financial Data, Rate Limiting, Quotas, and Credits.

7 Limits Throttle: 429
Market DataFinancial DataRate LimitingQuotasCredits

Limits

Free Forever Daily Requests account
requests
100 per day
Free tier is capped at 100 requests per day; resets 9:30 AM Eastern.
Starter Daily Credits account
credits
10000 per day
Resets 9:30 AM Eastern. No per-minute cap.
Trader Daily Credits account
credits
100000 per day
Resets 9:30 AM Eastern. No per-minute cap.
Quant Per-Minute Credits account
credits
10000 per minute
No daily cap; credits are governed on a per-minute window.
Prime Per-Minute Credits account
credits
100000 per minute
No daily cap; credits are governed on a per-minute window.
Simultaneous Requests account
connections
50 concurrent
All plans are capped at 50 simultaneous in-flight requests.
Per-Symbol Credit Consumption request
credits
1 credit per symbol returned
bulkquotes, bulkcandles, options/chain, and multi-symbol quotes charge one credit per symbol in the response.

Policies

Single IP per Account
An account may only be accessed from one IP address at a time; concurrent connections from multiple locations are not permitted.
Cached Responses
Any endpoint may return HTTP 203 Non-Authoritative Information when served from the caching tier; clients must treat 203 the same as 200 OK.
Negative Balance Grace
A request proceeds if at least one credit remains, even if it drives the balance negative; further requests block until the window resets.
Backoff Strategy
Clients should implement exponential backoff with jitter and honor Retry-After on 429 responses.

Sources

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

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