Strella docs
GuidesDeveloper
Strella docs
GuidesDeveloper
Welcome to StrellaChangelog
Run your first studyHow AI helps you in StrellaGlossary
The Build screenStart with the study setup chatSet up your study detailsWrite research objectivesBuild your screenerBuild your question guideBest practicesAdd survey questions to your interviewAdd a stimulus to your interviewHost a prototype and add it to your interviewAdd a card sortAdd a tree testRandomize sections (A/B variants)Conditional sectionsVersion historyUse the build assistantPreview your interviewUpload an existing discussion guideImport from another study
How the AI moderator worksVoice, language & behaviorRecording modesCustom dictionary & pronunciationCustomize the participant experienceWhat the AI moderator can't do
How recruitment worksSchedule moderated interviewsHire from a participant panelBring your own participantsManage share links & redirectsPass data with URL parametersControl access & schedulingSet quotasApprove, reject & invitePay participants you recruitedReport a participantWatch the funnel
Publish your studyEdit a study after launch
Get oriented in ResultsBring in interviews you ran elsewhereReview a single interviewBrowse analysisCode responsesSee how participants complete on-screen tasksSee how participants sorted your cardsSee how participants use your Figma prototypeUse Strella's AI chatAI chat best practices
Build & share a reportCreate & share a highlight reel
Teammates, organizations & workspacesDelete projectsProject defaultsBilling & creditsConnect FigmaAPI, MCP & AI assistantsParticipant data accessMedia links and who can open themActivity logs
Step typesScreener question typesRecording settingsParticipant statuses & funnel stagesSupported languagesVoice optionsBrowser & device requirements
MCP serverConnect an AI clientTools & skills referenceUse cases & example promptsWhat's newSecurity & privacyFAQ & troubleshooting
Welcome to Strella

Welcome to Strella

Strella is an AI-moderated user-research platform. Design a study, recruit participants, let the AI run interviews for you, then analyze, report, and share.

How a study works

  1. Build

    Write your research objectives. Author a screener and a question guide in one screen. An AI build assistant helps you iterate.

  2. Recruit

    Hire participants from a panel like Respondent or User Interviews, or bring your own with a custom share link. Set quotas to balance your sample.

  3. Run

    Publish. The AI moderator interviews each participant by voice, follows up, and guides them through any tasks or prototypes.

  4. Analyze

    Watch any interview, read the transcript, browse themes by objective or question, and chat with an AI analyst over the full set of responses.

  5. Share

    Generate a report. Build a highlight reel from the strongest moments. Share both as a public link.

Where to start

Run your first study

A 15-minute walkthrough end-to-end.

How AI helps you

Every place AI shows up in a study: setup, interviews, analysis, sharing.

Build a study

Screener, question guide, build assistant, all in one screen.

Glossary

The vocabulary you'll see across the app.

For developers & AI assistants

Strella has a public REST API and AI-readable documentation you can fetch directly, which is useful for building integrations or pointing an AI assistant at the docs:

  • API reference, the interactive REST API reference with every endpoint, schema, and the API-key auth.
  • llms-full.txt: the complete product documentation as a single plain-text file, for ingestion by an AI assistant.
  • llms.txt: a short AI-readable index that links the full docs and the API contract.
  • OpenAPI specification: the machine-readable API contract (OpenAPI 3.1).

Need a hand

Open the AI assistant in the corner of any docs page. It reads these pages and cites its sources. If you spot something out of date or missing, let us know. We use those gaps to prioritize what to write next.

Changelog

New features, improvements, and fixes shipped to Strella — most recent first.

On this page

How a study worksWhere to startFor developers & AI assistantsNeed a hand