For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
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DocumentationAPI Reference
  • API Reference
    • Introduction
    • Users
    • Taskflow
    • AI Task Builder
    • Studies
    • Representative sample studies
    • study-collections
    • Filter Sets
    • Participant Groups
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    • Study Distribution
    • Submissions
    • Bonuses
    • Messages
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    • Webhooks
      • Subscribing
      • Receiving
      • Event Delivery and Retry Logic
      • Persistent Failures and Disabling Logic
      • Idempotency and the X-Event-ID Header
      • Handling event order with X-Timestamp
      • Verifying
      • GETList all subscribable event types
      • GETList all secrets
      • POSTCreate/replace a secret
      • GETList all subscriptions
      • POSTCreate a subscription
      • GETRetrieve a subscription
      • POSTConfirm a subscription
      • DELDelete a subscription
      • PATCHUpdate a subscription
      • GETGet subscription events
    • Invitations
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    • Testing
    • Well Known Endpoints
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API Reference

Webhooks

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Webhooks deliver event data to your applications as it happens, offering an alternative to frequent data polling.

Webhooks inbound flow

The flow below shows the inbound nature of hook configuration. This is what is required to register your subscription.

Webhooks outbound flow

Once your subscription is registered, the flow below shows the outbound nature of hooks.

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