Firefox DevTools MCP
mozilla/firefox-devtools-mcp
Control and debug Firefox: navigate, fill forms, inspect network and console, profile.
- GitHub stars
- 553
- tools
- 13
- transport
- STDIO
- env vars
- 2
- last updated
- Oct 28, 2026
Tools
13 toolsPublic tool metadata for what this MCP can expose to an agent.
list_pagesCall tools like list_pages, select_page, navigate_page to use the browser.
Call tools like list_pages, select_page, navigate_page to use the browser.
No parameter schema in public metadata yet.
select_page
No parameter schema in public metadata yet.
navigate_page
No parameter schema in public metadata yet.
take_snapshot
No parameter schema in public metadata yet.
click_by_uid
No parameter schema in public metadata yet.
fill_by_uid
No parameter schema in public metadata yet.
list_network_requestsAlways-on network capture.
Always-on network capture.
No parameter schema in public metadata yet.
get_network_request
No parameter schema in public metadata yet.
list_downloadsAlways-on download capture.
Always-on download capture.
No parameter schema in public metadata yet.
set_download_behavior
No parameter schema in public metadata yet.
screenshot_page
No parameter schema in public metadata yet.
list_console_messages
No parameter schema in public metadata yet.
evaluate_scriptRuns a script in the page; included in the default basic preset.
Runs a script in the page; included in the default basic preset.
No parameter schema in public metadata yet.
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FIREFOX_HEADLESSSet to true to run Firefox without a visible window.
START_URLURL to open when the server starts.
Readme
Firefox DevTools MCP
Model Context Protocol server that lets AI agents use Firefox. It has two main use cases:
Details
- Repository
- github.com/mozilla/firefox-devtools-mcp
- Website
- github.com/mozilla/firefox-devtools-mcp
- Package
@mozilla/firefox-devtools-mcp- Transport
- STDIO
- Registry
- MCP registry, active