Launch your next experiment in one minute.
Describe the protocol. Maestro writes it, randomizes treatments, runs a live preview, and ships a participant URL — ready for Prolific, MTurk, or your subject pool.
Press Enter to start. You'll sign in next — no credit card.
Chat. Preview. Publish.
A single flow from idea to participant-ready URL — no codebase, no rebuilds.
Describe your experiment
Risk elicitation, allocation under budget, vignette surveys, multi-treatment field trials — write what you want to study in plain language.
Preview the live protocol
Maestro compiles a runnable protocol and opens it in a preview window. Click through pages, test treatment assignment, and iterate by chatting.
Publish a participant URL
When the preview is right, publish in one click. You get a shareable URL plus admin pages for sessions, data, and exports.
From risk preferences to multi-treatment field trials
A few representative protocols. Maestro composes from the same primitive library used by published lab studies.
Risk elicitation (MPL)
Multiple price list with 10–13 switching rows, single-crossing validation, payout export.
Budget-line allocation
Click-to-allocate across two goods with price shocks across rounds. Concavity diagnostics on export.
Vignette + comprehension
Multi-treatment vignettes with randomized assignment, comprehension gates, and Likert exit survey.
Battle-tested components, ready to compose
Price lists, budget lines, allocation games, surveys, AI-as-stimulus — wired to the same protocol runtime that powers preview and production.
MPL / Holt-Laury switch-row tasks
Allocation under budget constraints
A/B and radio/checkbox choices
Compact bounded surveys
Ordered agreement scales
Continuous ratings and quantities
Grid surveys with shared scale
Drag-to-rank ordered preferences
Open-ended responses
Image stimulus / captcha display
Click-to-reveal information
Time-bound page transitions
Precomputed AI advice with reveal
Your next experiment is one chat away.
Free to try, no credit card. Sign in with email or Google and start describing the protocol you want to ship.
No code, no rebuilds — describe and iterate by chat.
Live preview shares the same runtime as production.
Admin pages for sessions, data, and exports come free.
Cross-domain auth — one account across ra.maestro.onl.