zen-mcp (sh6drack/zen-mcp) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 20 tools. No publisher has claimed this listing.

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C
Caution
74/100

zen-mcp

The first MCP server for Zen Browser.

→ sh6drack/zen-mcp· listed on glama

Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

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Who stands behind it

sh6drack

Source: Glama

Is this your MCP?

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Install from

Glamanot scored here

The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.

// key findings
⚠️
Known vulnerabilities in dependencies: 1 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
// tools this server exposes20 tools

These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.

zen_list_pages

List all open pages/tabs in Zen browser with URLs and titles

zen_select_page

Select a page/tab by index (from zen_list_pages) as the active target

zen_new_tab

Open a new tab, optionally navigating to a URL

zen_navigate

Navigate the active page to a URL

zen_snapshot

Get a structured snapshot of visible page elements with CSS selectors. Filter: "all", "interactive", or "form".

zen_screenshot

Take a screenshot of the current page

zen_click

Click an element by CSS selector

zen_fill

Fill a text input or textarea with a value. Clears existing content first. Dispatches input/change events for framework compatibility.

zen_select_option

Select an option in a <select> dropdown by value or text

zen_check

Check/uncheck a checkbox or select a radio button

zen_evaluate

Execute JavaScript in the page and return the result

zen_get_form_fields

List all form fields on the page with names, types, labels, current values, and CSS selectors

zen_fill_form

Fill multiple form fields at once. Each field specifies selector, value, and action (fill/select/check/uncheck/click).

zen_scroll

Scroll the page or scroll an element into view

zen_wait

Wait for a specified number of milliseconds

zen_get_page_text

Get the page title, URL, and visible text content. Useful for quickly understanding what is on the page.

zen_close_tab

Close a tab by index. Cannot close the last remaining tab.

zen_press_key

Send keyboard input to the active page using BiDi input.performActions. Supports special keys like Enter, Tab, Escape, Backspace, and key combinations with modifiers.

zen_reconnect

Force disconnect and reconnect to Zen Browser. Use when the connection is in a bad state or after restarting Zen.

zen_wait_for

Wait for text to appear on the page, or for a CSS selector to match an element. Returns when found or after timeout.

// known CVEs in dependencies1 high1 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

highws@8.20.0GHSA-96hv-2xvq-fx4p

ws: Memory exhaustion DoS from tiny fragments and data chunks

lowws@8.20.0GHSA-58qx-3vcg-4xpx

ws: Uninitialized memory disclosure

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configZEN_DEBUG_PORT9222 Zen's remote debugging port
// quality suggestions

Tool annotations

No tools have read-only/destructive annotations

Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.

All four hints declared on every tool

20/20 tools missing one or more hints — zen_list_pages (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); zen_select_page (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); zen_new_tab (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +17 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.

For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.

License file

No license file

Add a LICENSE file (MIT, Apache-2.0, etc.).

Tests exist

No test files found

Add tests that exercise each declared tool.

Production dependencies are patched

0 critical, 1 high severity in production deps — ws@8.20.0 (high), ws@8.20.0 (low)

Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
[![M8ven Verified](https://m8ven.ai/badge/mcp/sh6drack/zen-mcp?variant=verified)](https://m8ven.ai/mcp/sh6drack/zen-mcp)
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commit: 76aa1e7140d6ae2b9400fd6d95eb8ee666facfd7
code hash: a9a1964c502e6145130cd7cf3b0d4a13befcf82323d8861924fcfa4dfcec80a7
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