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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "firefox-devtools-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@mozilla/[email protected]",
        "--tool-preset",
        "developer"
      ]
    }
  }
}

claude mcp add firefox-devtools-mcp -- npx -y @mozilla/[email protected] --tool-preset developer

[mcp_servers.firefox-devtools-mcp]
command = "npx"
args = ["-y", "@mozilla/[email protected]", "--tool-preset", "developer"]

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "firefox-devtools-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@mozilla/[email protected]",
        "--tool-preset",
        "developer"
      ],
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "firefox-devtools-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@mozilla/[email protected]",
        "--tool-preset",
        "developer"
      ]
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=firefox-devtools-mcp&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIkBtb3ppbGxhL2ZpcmVmb3gtZGV2dG9vbHMtbWNwQDAuMTAuNiIsIi0tdG9vbC1wcmVzZXQiLCJkZXZlbG9wZXIiXX0%3D"
}

{
  "servers": {
    "firefox-devtools-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@mozilla/[email protected]",
        "--tool-preset",
        "developer"
      ]
    }
  }
}

{
  "mcpServers": {
    "firefox-devtools-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@mozilla/[email protected]",
        "--tool-preset",
        "developer"
      ]
    }
  }
}

extensions:
  "firefox-devtools-mcp":
    enabled: true
    name: "firefox-devtools-mcp"
    type: stdio
    cmd: "npx"
    args:
      - "-y"
      - "@mozilla/[email protected]"
      - "--tool-preset"
      - "developer"
    timeout: 300

This is a local package: the command runs on your machine.

Quality – / 100not scored

Not scored: fewer than three checks apply, usually because no remote answered a credential-free probe or the server is a local package.

protocoln/a · weight 25

n/a
protocol.modern, protocol.stateless, protocol.transport, protocol.list_ttlno remote answered a protocol handshake (not probed yet, unreachable, or local-only)

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygienen/a · weight 30

n/a
tools.descriptions, tools.description_length, tools.schemas, tools.annotations, tools.directory_hints, tools.token_cost, tools.api_dumptool list unknown (behind auth, not probed, or empty)

stabilityn/a · weight 15

n/a
stability.changes, stability.rug_pulltool list unknown

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvabledeps.dev does not know @mozilla/[email protected]

Tool list unknown · checked 2026-10-19 15:48 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 96 / 100

provenance90

livenessn/a

freshness100

hygiene100

+repository +namespace-matches-repo +website ~liveness-unmeasured +updated-3d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Dependencies

@mozilla/[email protected] npmthis version is not known to the dependency resolver

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

package	registry	version	runtime	secrets
`@mozilla/firefox-devtools-mcp`	npm	0.10.6	–

Tools (0)

No tools observed. Local packages are never executed by the registry.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.mozilla/firefox-devtools-mcp",
  "title": "Firefox DevTools MCP",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "version": "0.10.6",
  "packages": [
    {
      "version": "0.10.6",
      "transport": {
        "type": "stdio"
      },
      "identifier": "@mozilla/firefox-devtools-mcp",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "packageArguments": [
        {
          "name": "--tool-preset",
          "type": "named",
          "format": "string",
          "choices": [
            "slim",
            "basic",
            "developer"
          ],
          "default": "developer",
          "description": "Tool modules to expose. Higher presets widen what the agent can do."
        }
      ],
      "environmentVariables": [
        {
          "name": "FIREFOX_HEADLESS",
          "format": "boolean",
          "description": "Set to true to run Firefox without a visible window."
        },
        {
          "name": "START_URL",
          "format": "string",
          "description": "URL to open when the server starts."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/mozilla/firefox-devtools-mcp",
    "source": "github"
  },
  "websiteUrl": "https://github.com/mozilla/firefox-devtools-mcp",
  "description": "Control and debug Firefox: navigate, fill forms, inspect network and console, profile."
}