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Firefox DevTools MCP server
Firefox DevTools MCP is Mozilla's MCP server in the official registry (io.github.mozilla/firefox-devtools-mcp). Declared transport: stdio (local, npm).
★ 497 GitHub stars · 2026-10-17
| Transport | stdio (local, npm) |
|---|---|
| Auth | No secrets declared in registry entry |
| Registry name | io.github.mozilla/firefox-devtools-mcp · 0.10.4 |
| Source | https://github.com/mozilla/firefox-devtools-mcp |
| Remote endpoints | None declared |
| Data source | Official MCP Registry |
| Kind | Community |
| GitHub stars | 497 GitHub stars, fetched 2026-10-17 |
| Date checked | 2026-10-17 |
| Last commit | 2026-10-16 |
Install
Configs are generated only from packages and remotes on the registry entry. Empty optional flags are listed instead of inserted. Nothing is added that the entry does not declare.
Local package (npm)
{
"mcpServers": {
"firefox-devtools-mcp": {
"command": "npx",
"args": [
"-y",
"@mozilla/[email protected]"
]
}
}
}{
"mcpServers": {
"firefox-devtools-mcp": {
"command": "npx",
"args": [
"-y",
"@mozilla/[email protected]"
]
}
}
}{
"servers": {
"firefox-devtools-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@mozilla/[email protected]"
]
}
}
}{
"mcpServers": {
"firefox-devtools-mcp": {
"command": "npx",
"args": [
"-y",
"@mozilla/[email protected]"
]
}
}
}claude mcp add firefox-devtools-mcp -- npx -y @mozilla/[email protected]
Optional arguments left out of the snippet
- --tool-preset — Tool modules to expose. Higher presets widen what the agent can do.
Optional environment variables
Not placed in the snippet. Names declared on the entry:
FIREFOX_HEADLESSSTART_URL
FAQ
What transport does Firefox DevTools MCP use?
stdio (local, npm).
What credentials are declared for Firefox DevTools MCP?
No secrets declared in registry entry.
When was this checked, and what is the source?
These facts were checked on 2026-10-17. Registry name: io.github.mozilla/firefox-devtools-mcp. Source: https://github.com/mozilla/firefox-devtools-mcp.
Category hub: Developer Tools. Client indexes: Claude, Cursor, VS Code. This listing is in The MCP Vault until it graduates.
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