Firefox MCP Server

send_key

Simulate keyboard events in Firefox for browser automation, enabling input actions like typing and shortcuts with customizable modifiers, key repeats, and selector targeting.

Instructions

Send keyboard events

Input Schema

Name	Required	Description	Default
`key`	Yes
`modifiers`	No
`repeat`	No
`selector`	No
`tabId`	No

Input Schema (JSON Schema)

{
  "properties": {
    "key": {
      "type": "string"
    },
    "modifiers": {
      "items": {
        "type": "string"
      },
      "type": "array"
    },
    "repeat": {
      "default": 1,
      "type": "number"
    },
    "selector": {
      "type": "string"
    },
    "tabId": {
      "type": "string"
    }
  },
  "required": [
    "key"
  ],
  "type": "object"
}

MCP directory API

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