Jev Ultrafast MCP

Findings (1)

• lowLow. Minor, or common in normal tools. Shown for information.
  Reads environment variables not listed in the manifest

  LOCALAPPDATA, XDG_CONFIG_HOME, JEVMCP_PROFILE_DIR, JEVMCP_ATTACH_PROFILE_DIR, JEVMCP_WINDOW, JEVMCP_CHROME, JEVMCP_MODE, JEVMCP_CDP_URL, JEVMCP_SANDBOX, JEVMCP_MAX_ACTIONS, JEVMCP_MAX_TEXT, JEVMCP_STATE_DIR, TYPESAFE_MODEL, JEVMCP_SETTLE_TIMEOUT, JEVMCP_SETTLE_POLL_MS

Network activity

Tools exposed (10)

• browser_open

  Open a URL in a new owned tab and return the element table. Use `hint` to restate the goal in one line; it is echoed back so the next step has the goal in context without re-reading this call.

• browser_observe

  Re-read the page: new element table, or a delta if little changed. `mode`: "auto" (delta when possible), "full" (whole table, e.g. after a big change), "delta" (force). `include_json=True` appends a machine-readable copy of the element table when you want to plan over it programmaticall

• browser_act

  Execute one or more ops in order, then return a delta observation. Batch ops into a single call — each call is a round trip. op fields click ref (ref may be "e12", or "e12" of a combobox to open it) type ref, text, [clear=true],

• browser_assert

  Verify the current page against deterministic checks. Returns pass/fail. checks {"type": "url_matches", "pattern": "*/checkout*"} {"type": "url_contains", "text": "/orders/"} {"type": "title_matches", "pattern": "*Order*"} {"type": "text_contains", "text": "Th

• browser_macro

  Record, replay, list, or delete a macro — a discovered path with no model calls. action="record_start" begin capturing ops (needs the session to be driving the task) action="record_stop" finish and save under `name` action="run" replay `name`; `params` fills {{placeholders}

• browser_goal

  Hand a whole browser task over. Needs a decision-model key. This is the entry point for browser work, not an optimisation on top of the manual loop. Pass `url` and the goal and the page is opened and driven to the end here: one call, one host turn, instead of a turn per click. Leav

• browser_tabs

  List, open, switch to, or close tabs. Tabs opened by the page show up in observations on their own. To act on one, prefer `target_id` (the `#handle` printed by action="list"): indexes are positional and get renumbered whenever the tab list changes, so an index read a call ago can ad

• browser_sessions

  List open sessions (independent owned tabs).

• browser_close

  Close a session's tab. Set shutdown_browser=True to stop the browser too. Only a browser this server launched is stopped. In attach mode the browser is yours: shutdown detaches and leaves it, and every other window, running.

• browser_doctor

  Report environment: browser binary, connection, keys, and policy envelope. Call this when anything behaves unexpectedly — it separates "no browser" from "blocked by policy" from "no key".