# Prolific

**Canonical:** https://apis.io/providers/prolific/  
**Website:** https://www.prolific.com/  
**APIs profiled:** 18

Prolific is a platform for high-quality human data collection, connecting researchers and AI/ML teams with a vetted pool of verified participants for online studies, surveys, and human-feedback tasks (preference tuning, safety evals, benchmarks, RLHF). Its public REST API (api.prolific.com, OpenAPI 3.1) automates the full workflow: create and cost studies, target participants with demographic filters and filter sets, launch and monitor recruitment, review and approve submissions, pay rewards and bonuses, message participants, run AI Task Builder batches, and receive HMAC-signed webhooks. Prolific also ships a Go CLI and an official Model Context Protocol server for agent-driven study workflows. Trusted by Google, Hugging Face, and academic and government researchers.

## Kin Score — 54.4 / 100 (developing)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 54.4).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 66.0 |
| Governance | 11.5 |
| Operational Transparency | 39.5 |
| Developer Ergonomics | 82.1 |
| Commercial Clarity | 34.2 |

## Agent readiness — 53.8 (agent-native)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| MCP Server | yes |
| Auth Clarity | yes |
| Idempotency | documented |
| Error Semantics | verified |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | yes |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (18)

- **Prolific aiTaskBuilder API** — The aiTaskBuilder API from Prolific — 24 operation(s) for aitaskbuilder.
- **Prolific bonuses API** — The bonuses API from Prolific — 2 operation(s) for bonuses.
- **Prolific credentials API** — The credentials API from Prolific — 2 operation(s) for credentials.
- **Prolific filters API** — The filters API from Prolific — 3 operation(s) for filters.
- **Prolific filterSets API** — The filterSets API from Prolific — 5 operation(s) for filtersets.
- **Prolific invitations API** — The invitations API from Prolific — 1 operation(s) for invitations.
- **Prolific messages API** — The messages API from Prolific — 4 operation(s) for messages.
- **Prolific participantGroups API** — The participantGroups API from Prolific — 3 operation(s) for participantgroups.
- **Prolific projects API** — The projects API from Prolific — 2 operation(s) for projects.
- **Prolific rewardRecommendations API** — The rewardRecommendations API from Prolific — 1 operation(s) for rewardrecommendations.
- **Prolific studies API** — The studies API from Prolific — 18 operation(s) for studies.
- **Prolific submissionFeedbackUpload API** — The submissionFeedbackUpload API from Prolific — 1 operation(s) for submissionfeedbackupload.
- **Prolific submissions API** — The submissions API from Prolific — 5 operation(s) for submissions.
- **Prolific surveys API** — The surveys API from Prolific — 5 operation(s) for surveys.
- **Prolific users API** — The users API from Prolific — 2 operation(s) for users.
- **Prolific webhooks API** — The webhooks API from Prolific — 5 operation(s) for webhooks.
- **Prolific wellKnownEndpoints API** — The wellKnownEndpoints API from Prolific — 1 operation(s) for wellknownendpoints.
- **Prolific workspaces API** — The workspaces API from Prolific — 3 operation(s) for workspaces.

## MCP servers (1)

- **prolific-mcp.yml**

## Security (2)

- **Prolific Authentication** — apiKey · 1 scheme
- **Prolific Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Tags

Company, Ai/Ml, Human Data, Research, Participant Recruitment, Surveys, Human Feedback, RLHF, Data Collection, API

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/prolific/). Scores are computed from the provider's own public artifacts under a published rubric.