Deterministic Browser Harness
Each page starts in a known state, exposes a visible task contract, and reveals a persistent completion code only after true success. The suite is tuned for debugging where an agent gets stuck, not for simulating a full product flow.
Field targeting, typing, clicking, simple submit flows, and explicit success checks.
Focused pages that isolate a single visible control or interaction pattern.
form-single-input-001
One text field, one correct value, one success path.
Enter `AURORA-17` in the Access code field, then submit the form.
form-multi-field-002
Three required fields with inline validation and one optional decoy field.
Fill First name with `Nora`, Last name with `Stone`, Email with `nora.stone@gettandem.app`, then submit.
dropdown-basic-003
A native select with decoy controls nearby and one valid option.
Choose `Orion Ops` from the Team assignment dropdown, then submit.
radio-basic-004
A simple radio group with similar-looking labels.
Select the deployment window labeled `06:30 PM`, then submit.
checkbox-basic-005
Two required checkboxes plus a select-all trap and a disabled decoy.
Check only `I have reviewed the release notes` and `I confirm the staging snapshot is current`, then submit.
button-target-006
A primary action surrounded by similar-sized decoy buttons.
Press the button labeled `Finalize Snapshot`.
enter-submit-007
A keyboard-only submission path with no clickable submit button.
Type `delta search ready` in the search field and submit with Enter.
textarea-basic-008
A multiline input task that checks textarea targeting and formatting.
Enter the exact three-line note shown in the reference block into the textarea, then submit.
slider-drag-019
A single slider that must be moved to an exact numeric value before submit.
Drag the slider until the current value is `72`, then submit.
Scroll management, wizards, modals, accordions, tabs, and dense row actions.
Layout-heavy tasks where the agent has to navigate sections, overlays, or repeated UI.
scroll-long-form-009
A deliberately tall page that separates the final submit area from the first fields.
Fill Project name with `Northwind`, Owner with `Ava`, Rollout zone with `Central`, then scroll to the bottom and submit.
wizard-steps-010
A three-step flow where only the last step reveals success.
Step 1: enter `BETA-9`. Step 2: choose `Manual Review`. Step 3: check the final confirmation and submit.
modal-confirm-011
A centered overlay that requires the agent to ignore the background page.
Open the modal, type `CONFIRM` inside it, then press `Confirm action`.
accordion-reveal-012
A hidden input flow behind one of several similar accordion sections.
Expand `Credential Rotation`, enter `rotate-88`, then submit the revealed form.
tabs-target-013
A tabbed settings shell with one actionable form inside the correct tab.
Switch to the `Notifications` tab, choose `Hourly`, then save the preference.
table-row-action-014
A dense table with repeated row actions and only one valid target row.
Find the row for `Helio Labs` and press its `Mark reviewed` button.
Error handling, prerequisite gating, loading patience, and state re-checking.
Tasks that intentionally expose waiting, validation, and delayed state transitions.
validation-recovery-015
A recovery-specific task that requires noticing and correcting a validation failure.
Press submit once with the field empty to surface the validation error. Then enter `TANDEM-VALID` and submit again.
delayed-enablement-016
A prerequisite gate where the final button becomes enabled after a short delay.
Check `I understand this is a simulated dry run`, wait for the continue button to enable, then click continue.
async-spinner-017
A two-phase async interaction with a visible loading state and post-load action.
Press `Start analysis`, wait for loading to finish, then click `Publish result`.
Repeated modules, nearby decoys, full-label reading, and verifying the right target.
Pages that force the agent to disambiguate repeated controls and local context.
repeated-ui-018
Three nearly identical cards, each with the same action button.
In the card labeled `North Annex`, press `Arm sensor`.