Usage

September 21, 2026 ยท View on GitHub

Generated by scripts/gen_usage.py from the MCP tool schemas and the CLI parser. Do not edit by hand; run the script instead.

jev-ra 0.1.2

MCP tools

browser_act

Take one decided step towards an instruction on the current page.

argumenttyperequireddefault
instructionstryes-
valuesobject[str] | noneno-

browser_click

Click one observed element by its ref.

argumenttyperequireddefault
refstryes-

browser_close

Close the browser session held by this server.

Takes no arguments.

browser_extract

Pull structured page data from the DOM: text, elements, links, tables or main.

argumenttyperequireddefault
modestrnotext

browser_observe

List the observed controls and the visible text of the current page.

argumenttyperequireddefault
max_elementsint | noneno-

browser_open

Open a URL in the shared browser session and summarise the page.

argumenttyperequireddefault
urlstryes-

browser_press

Press Enter, Escape or Tab.

argumenttyperequireddefault
keystryes-

browser_run

Pursue a whole goal on the current page. Supply values for anything that must be typed.

argumenttyperequireddefault
goalstryes-
valuesobject[str] | noneno-
max_stepsint | noneno-

browser_screenshot

Capture the current viewport as a JPEG.

Takes no arguments.

browser_scroll

Scroll the page one viewport step up or down.

argumenttyperequireddefault
directionstrnodown

Search the web, read the best results in parallel tabs, and rank them against the goal.

argumenttyperequireddefault
querystryes-
goalstr | noneno-
max_pagesintno3

browser_select

Select an observed dropdown option by its value or label.

argumenttyperequireddefault
refstryes-
optionstryes-

browser_type

Type text into one observed field by its ref.

argumenttyperequireddefault
refstryes-
textstryes-

browser_wait

Wait a moment and observe again.

Takes no arguments.

Command line

usage: jev-ra [-h] [--version] COMMAND ...

A fast browser-use layer for CLI coding agents.

positional arguments:
  COMMAND
    run         pursue a goal from a URL until it is done or escalates
    open        open a URL and keep the session for later commands
    observe     list the controls and text of the open page
    extract     pull structured data out of the open page
    act         take one decided step on the open page
    click       click one observed element
    type        type into one observed field
    select      select an observed dropdown option
    scroll      scroll the open page
    press       press Enter, Escape or Tab
    wait        wait a moment and observe again
    screenshot  save a JPEG of the viewport
    close       close the session kept by `open`
    mcp         run the MCP stdio server
    skill       print the agent guide, for saving as a skill file
    install     register jev-ra as an MCP server with a coding agent
    doctor      check the key, the endpoint, Chrome and one live decision
    search      search the web and read the best results
    bench       time the offline fixtures, and the live tasks with --live
    corpus      run the real-site corpus

options:
  -h, --help    show this help message and exit
  --version     show program's version number and exit