Firefox DevTools MCP
By Mozilla. Category: MCP servers for testing. Homepage
Mozilla's README describes Firefox DevTools MCP as a Model Context Protocol server for automating Firefox through WebDriver BiDi via Selenium WebDriver. It gives AI agents tools to navigate pages, take snapshots, click and fill elements, list network requests and console messages, and capture screenshots. The server runs locally with npx or Docker and needs a local Firefox installation; it cannot run on cloud hosting services. Documented clients include Claude Code, Claude Desktop, Codex, Cursor and Cline. It is dual licensed under MIT or Apache 2.0. The README describes the API as pre-1.0.
Description written from the vendor's documentation.
Status
Status: Active
Facts
| Fact | Value | Evidence | Source | Verified on |
|---|---|---|---|---|
| Status | Active | Documented | npmjs.com | |
| AI capabilities | Not documented | Not documented | None found | |
| Test creation | Not documented | Not documented | None found | |
| Test output | Not documented | Not documented | None found | |
| Surfaces | Documented | github.com | ||
| Hosting | Documented | github.com | ||
| Pricing model | Documented | github.com | ||
| Free tier | Yes | Documented | github.com | |
| CI integrations | Not documented | Not documented | None found | |
| Self-healing | None documented | Not documented | None found | |
| Agent integration | Is itself an MCP server (npm package @mozilla/firefox-devtools-mcp, run with npx or Docker) automating Firefox via WebDriver BiDi through Selenium WebDriver; tools include navigate_page, take_snapshot, click_by_uid, fill_by_uid, list_network_requests, screenshot_page and list_console_messages; documented clients include Claude Code, Claude Desktop, Codex, Cursor and Cline | Documented | github.com | |
| Open source | Yes, licence MIT OR Apache-2.0 | Documented | github.com |
Published prices
No prices are published.
Alternatives
Tools in the same category (MCP servers for testing), ordered by the number of shared creation and surface values, then by name. Each line lists documented facts that differ from Firefox DevTools MCP.
- a11y MCP: MCP servers for testing; no documented difference in output, creation, hosting or free tier
- Argos: documents hosting cloud
- Browser Use: documents creation by natural language; hosting cloud
- BrowserStack MCP Server: documents creation by natural language; hosting cloud
- BrowserTools MCP: MCP servers for testing; no documented difference in output, creation, hosting or free tier
- Chrome DevTools MCP: MCP servers for testing; no documented difference in output, creation, hosting or free tier
Questions
Is this page a review of Firefox DevTools MCP?
No. This page is a fact sheet. Each fact shows its evidence level, its source and the date it was checked. We do not rate or rank tools.
Does Firefox DevTools MCP have a free tier?
Yes. Firefox DevTools MCP has a free tier. This is documented, checked on 2026-09-24.
What test output does Firefox DevTools MCP produce?
The test output format is not documented as of 2026-09-24.
Is Firefox DevTools MCP still available?
Status: Active, checked on 2026-09-24.
Sources
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