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
DocumentationAPI Reference
  • API Reference
    • Introduction
    • Users
    • Taskflow
    • AI Task Builder
    • Studies
    • Representative sample studies
    • study-collections
    • Filter Sets
      • GETList all filter sets
      • POSTCreate filter set
      • GETGet filter set
      • DELDelete filter set
      • PATCHUpdate filter set
      • POSTClone filter set
      • POSTLock filter set for editing
      • POSTUnlock filter set for editing
    • Participant Groups
    • Custom Groups
    • Study Distribution
    • Submissions
    • Bonuses
    • Messages
    • Workspaces
    • Projects
    • Surveys
    • Webhooks
    • Invitations
    • Reward Recommendations
    • Testing
    • Well Known Endpoints
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API Reference

Filter Sets

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Filter sets allow you to combine multiple filters into a single re-usable template, which can be used across multiple studies to ensure the same demographic requirements are applied.

These filters are then evaluated at study publish, with each study recruiting from the available pool of participants who satisfy the selected filters at that time.

Note that when publishing a duplicated study which used a filter set, it will use the filters applied to the filter set at the time it was applied to the original study. This can be updated by changing the filter_set_version on the study to the latest version, as returned on the filter set endpoint.

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