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Jev Ultrafast

A browser agent selects actions from the current DOM and demonstrates flight search.

Added to Jevfast

How it uses Jev

At each decision step, the agent sends Jev the current page text, numbered controls, recent actions, and the user's goal. One request asks for an operation Choice and operation-specific target Choice questions; code uses only the target matching the selected operation. If the operation is TYPE_TEXT, a separate small LLM writes the field value.

What Jev decides

Jev request and response2 of 3 questions shown
Question 1 · operation
YOUR APP
INSTRUCTION

Advance the one-way Zurich to London flight search from the current page. Choose one operation.

STATE

Google Flights home page. Ticket type: Round trip; one adult; Economy. Origin, destination, departure, and return fields are empty. No recent actions.

JEV · CHOICE
  1. CLICK 0.77
  2. TYPE_TEXT 0.22
  3. BLOCKED 0.01
  4. SCROLL_DOWN 0.00
  5. WAIT 0.00
  6. DONE 0.00
Question 2 · click target
YOUR APP
INSTRUCTION

If the operation is CLICK, choose the observed control that best advances the flight search.

STATE

Google Flights home page. Ticket type: Round trip; one adult; Economy. Origin, destination, departure, and return fields are empty. No recent actions.

JEV · CHOICE
  1. [12] Change ticket type. Round trip 0.88
  2. [15] Open Where from? 0.12

2 of 25 offered options shown

App workflow

  1. Observe page

    Read visible text and numbered controls.

  2. Ask Jev

    Send the shared state with operation and target questions.

  3. Use the answer

    Read CLICK and its selected [12] Round trip target.

  4. Check and act

    Validate the observed target and current page, then click.

  5. Observe again

    Read the changed page before the next decision.

Why it is interesting

Jev chooses among actions the page actually exposes, while code keeps browser execution and text entry bounded. Judging the operation and possible targets in one request gives the agent a reusable pattern for changing interfaces without a second Jev round trip.