Jev Ultrafast MCP

by jiawei686• 19•• Scanned•Claim this listing•Request removal

Browser Automationagent toolsai agentsbrowser agentbrowser automationbrowser use

Hand a whole browser task off in one call: a decision model drives the page server-side, so a flow costs one call, not a turn per click. Ref-based element tables, code-checked assertions, zero-model macro replay, over the Chrome DevTools Protocol.

Jev Ultrafast MCP is an open-source mcp server by jiawei686, written mainly in Python, with 19 GitHub stars and the MIT license. Its code was last updated Sep 23, 2026. The latest PyPI release is jev-ultrafast-mcp 0.1.5, published Sep 19, 2026, with 81 downloads last week.

Scan summary: scanned Nov 5, 2026 at commit 6b2e275. Seen able to read environment and secrets, control a web browser. Scan policy

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How to install Jev Ultrafast MCP

Built from the start command in the project's README: uvx jev-ultrafast-mcp # run it straight from PyPI, nothing installed. Check the README for required keys or settings.

Claude Code · Terminal

claude mcp add jev-ultrafast-mcp -- uvx jev-ultrafast-mcp                  # run it straight from PyPI, nothing installed

Claude Desktop · claude_desktop_config.json

{
  "mcpServers": {
    "jev-ultrafast-mcp": {
      "command": "uvx",
      "args": [
        "jev-ultrafast-mcp",
        "#",
        "run",
        "it",
        "straight",
        "from",
        "PyPI,",
        "nothing",
        "installed"
      ]
    }
  }
}

Cursor · .cursor/mcp.json

{
  "mcpServers": {
    "jev-ultrafast-mcp": {
      "command": "uvx",
      "args": [
        "jev-ultrafast-mcp",
        "#",
        "run",
        "it",
        "straight",
        "from",
        "PyPI,",
        "nothing",
        "installed"
      ]
    }
  }
}

VS Code · Terminal

code --add-mcp '{"name":"jev-ultrafast-mcp","command":"uvx","args":["jev-ultrafast-mcp","#","run","it","straight","from","PyPI,","nothing","installed"]}'

What Jev Ultrafast MCP can touch

Run shell commandsNot seen in this scan
Run dynamic codeNot seen in this scan
Read or write filesNot seen in this scan
Read environment and secretsFound in the code by our scan
Control a web browserListed as a tool: browser_open
Connect to databasesNot seen in this scan
Read or send messagesNot seen in this scan
Touch money or tradingNot seen in this scan
Connect to the internetNo connections seen while running

"Not seen" means our checks did not find it, and the tool may still do it. Covers commit 6b2e275, Nov 5, 2026. See the scan policy.

Before you install Jev Ultrafast MCP

AgenticMart scanned Jev Ultrafast MCP on Nov 5, 2026 with automated checks for hidden code, known-malicious packages, leaked secrets and vulnerable dependencies. The result covers one commit under our scan policy, so review what access you give it and check any advisories shown here.

What it can access

An MCP server is a program your AI app starts and talks to. A local one runs with your user's permissions: it can see the files, environment variables and network your account can.
Based on its description and topics, it likely needs to control a web browser (visit sites, fill in and submit forms).
Based on its description and topics, it likely needs to read or change your workspace data (docs, tickets, CRM).

Before you install

Run it in a separate browser profile without your logged-in accounts.
Connect it to a test workspace before your real one.
Pin the version you reviewed instead of always installing the latest release.
Read the tool list or scripts before the first run, and keep approval prompts on for actions that write, send or delete.

Maintained by jiawei686 on GitHub, 19 stars and 6 forks. Popularity is not proof of safety.
Last code change: Sep 23, 2026.
Open-source license: MIT.

Read the scan report What our scan checks

Tools Jev Ultrafast MCP exposes (10)

Listed by the server itself during our scan of commit 6b2e275.

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".

Jev Ultrafast MCP is an open-source mcp server by jiawei686, written mainly in Python. Hand a whole browser task off in one call: a decision model drives the page server-side, so a flow costs one call, not a turn per click. Ref-based element tables, code-checked assertions, zero-model macro replay, over the Chrome DevTools Protocol.

At a glance

Stars: 19
Forks: 6
Language: Python
License: MIT
Created: Sep 2026
Last update: Sep 23, 2026
Type: MCP Server
Price: Free

Topics

agent-toolsai-agentsbrowser-agentbrowser-automationbrowser-usecdpchrome-devtools-protocolclaudeclaude-codecursorheadless-chromellmmcpmcp-servermodel-context-protocolplaywright-alternativepythonvscodeweb-automationworkbuddy

Questions about Jev Ultrafast MCP

What is Jev Ultrafast MCP?

Who maintains Jev Ultrafast MCP?

Jev Ultrafast MCP is maintained by jiawei686 on GitHub (jiawei686/jev-ultrafast-mcp). AgenticMart lists it from public repository data.

Is Jev Ultrafast MCP safe to use?

What license does Jev Ultrafast MCP use?

It is published under the MIT license.

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