dev-browser-mcp (kamkozlowski/dev-browser-mcp) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 16 tools. The publisher has confirmed an email address for this listing, which proves an inbox rather than ownership (Claimed).

Back to MCP Trust IndexM8ven
C
Emerging
74/100
13 hours ago

dev-browser-mcp

Enables AI agents to control a persistent Chromium browser or attach to an existing Chrome with sandboxed JavaScript and structured tools for web interaction and automation.

→ kamkozlowski/dev-browser-mcp· listed on glama

Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

Code VerifiedSandbox Verified⚡ Live Monitored: not connected

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Who stands behind it

kamkozlowski · Claimed

Source: Glama

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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
✅
16 tools verified — handlers match their declared behaviour
5 read-only tools verified — handlers contain no write/delete/exec
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
✅
Open source with a license and README
Anyone can audit the code, the license is declared, and the publisher documents what it does.
Are you the publisher? Confirm or correct these findings.
// known CVEs in dependencies1 low

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

lowvitest@3.2.7GHSA-82fw-gwwq-j7x9

Vitest: Path Traversal / Arbitrary File Read via @vitest/mocker Redirect Mock

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// quality suggestions

Tool annotations

6/16 tools have annotations

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

All four hints declared on every tool

16/16 tools missing one or more hints — dev_browser_run (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); dev_browser_list_pages (missing: destructiveHint, idempotentHint, openWorldHint); dev_browser_page_open (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +13 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.

Tool inputs are validated

12/16 tool handlers declare input schemas (75%)

Declare an inputSchema with zod/joi/yup on every tool definition.

No arbitrary install scripts

Has postinstall/preinstall script — runs arbitrary code on npm install

Remove postinstall/preinstall hooks unless they’re essential.

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 4 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 Score](https://m8ven.ai/badge/mcp/kamkozlowski/dev-browser-mcp)](https://m8ven.ai/mcp/kamkozlowski/dev-browser-mcp)
Shows your grade and updates automatically. Prefer no grade? Append ?variant=verified to the badge URL.
commit: b81153553fb864c89c57cb1361f16d4a088e6c8c
code hash: 9b1b925bfc2325da12bf2271c88759d63c196468fb17923256876168137cefba
verified: 9/12/2026, 8:36:29 PM
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