Massive API: Quota Units, Coverage & Use Checklist

Data workflow

U.S. stock reference and price-data workflows. A provider-wide feature list does not mean the Basic plan includes every feed or delivery mechanism.

Documented quota and access

Stocks Basic lists 5 APIcalls/minute,2 years of historical data and end-of-day access for individual use. Other stock plans have different timing/history entitlements.

Use and display boundaries

Individual-use pricing is separate from business plans. Real-time, delayed and end-of-day access are different entitlements; do not infer redistribution rights from a successful request.

A practical acceptance task

Inspect a daily-aggregate response and its adjusted flag. Confirm timestamp units, data timing and history range under the actual selected plan.

Keep the request context

Record endpoint/version, instrument identity, data frequency, timezone, history range, adjustment flags and the account entitlement. Retain only the response/provenance that the applicable terms permit. A generic provider comparison cannot replace a named dataset specification.

Test semantics before scale

Use a small authorized example and inspect status, response schema and any error object inside a successful HTTP response. Check pagination and row ordering. The local daily inspector accepts an explicitly mapped single-series CSV; it is not a universal provider JSON adapter or a certification of source accuracy.

Primary evidence

Massive stock pricing — checked 17 October 2026. Numeric limits are omitted where no current primary-source plan value was verified; omitted does not mean unlimited.