Prolific Research Rate Limits
Prolific does not publish fixed numeric per-second or per-minute request limits for its API. Instead, limits are implicit and arise from contention on shared resources - primarily the workspace wallet. Payment operations (submission approvals and bonus payments) are the most prone to 429 Too Many Requests responses because they verify and debit the shared balance concurrently. The Studies API additionally applies rate limits designed to prevent researchers from launching too many studies with very low participant counts. Prolific recommends keeping concurrent active studies under roughly 100 per workspace.
Prolific Research Rate Limits is the machine-readable rate-limit profile for Prolific on the APIs.io network, conforming to the API Commons Rate Limits specification.
It captures 5 rate-limit definitions, measuring requests, studies, and participants.
The profile also includes 3 backoff/retry policies defined and response codes documented for throttled.
Tagged areas include Research, Participant Recruitment, Rate Limiting, and Quotas.
Limits
Policies
Sources
- https://docs.prolific.com/documentation/core-concepts/managing-high-loads
- https://docs.prolific.com/api-reference/studies
- https://docs.prolific.com/api-reference/introduction/basic
Work with this as data
Every rate limit here is available over the APIs.io API and to AI agents over MCP.
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Tools for rate limits
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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.
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curl "https://apis.io/api/v1/rate-limits/prolific-research-rate-limits"curl "https://apis.io/api/v1/rate-limits?limit=25"Discovery needs no key. Ratings and market analysis are Pro.