Is Firefox DevTools · mozilla safe and trustworthy?

tashan scores Firefox DevTools · mozilla on public evidence — tashan score 40.0/100, it is currently active. Audit scope: OSV advisories, install-time scripts, build provenance and declared permission surface. We do not review source code or execute the capability.

How do I install Firefox DevTools · mozilla?

Configure it from its source repository — it is a remote / registry server.

Who maintains Firefox DevTools · mozilla?

15 GitHub contributors, source: mozilla/firefox-devtools-mcp.

‹ The Index

Firefox DevTools · mozilla

plugin

Control Firefox for browsing, web testing, and debugging. Fill forms, capture network and console activity, take screenshots, run scripts, and profile performance. Supports Android devices.

Works with: Claude Code (native)
native: this artifact type is that client's own format

Category: Dev Tools & CI — see all ranked ›

Work: Browser automation · Debugging · Query optimisation

Who it is for: Software engineer · Operations · Data engineer

Install (Claude Code):

/plugin marketplace add mozilla/firefox-devtools-mcp
/plugin install firefox-devtools-mcp@firefox-devtools-plugins

tashan score: 40.0
Adoption: 1 repos
Upkeep: 93.0
Freshness: 84.0
Evidence coverage: 84% of the inputs this score can use — the rest are unknown, and the score is discounted for it
Health: active
Contributors: 15
License: NOASSERTION

Security audit

Not scanned yet. We audit npm-published capabilities for known advisories, install-time scripts and permission surface; this one has no npm package we can resolve, or has not reached the queue.

You searched for one. Check the rest of your stack:

npx tashan-cli doctor

Reads the config already on your machine and names what is dead, deprecated or running code at install time. No account, nothing uploaded.

tashan Pro$6/mo

Firefox DevTools · mozilla scores 40 today. Pro keeps the series, so you can see whether that is a project getting better or one on its way down.

The whole series behind any row, back to the first day we measured it
The replacement, named — not just the news that something died
tashan doctor over your own config, on your own machine

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Show your score

Measured this well? Put the live badge in your README — it updates as the score does.

[![tashan](https://tashan.sh/badge/plugin-mozilla-firefox-devtools-mcp-firefox-devtools-mcp.svg)](https://tashan.sh/capability/plugin-mozilla-firefox-devtools-mcp-firefox-devtools-mcp.html)

source ↗ · plugin:mozilla/firefox-devtools-mcp/firefox-devtools-mcp

Everything on this page is public evidence and free. What it cannot know is whether you run this — check your whole config, free, in the browser. tashan Pro adds the series behind each row and names a replacement for anything dying.

Already running this? Check your whole config — free, in your browser, nothing installed. Or npx tashan-cli doctor locally, which sends nothing at all.

Measured 2026-09-13 · scorer s5 · how · something wrong here?