Keyboard Test
Open Keyboard Test on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.
Tool capabilities
{
"id": "keyboard-test",
"category": "device-tools",
"built": true,
"requirements": "Show key events and layout caveats; never store typed text.",
"implementation": {
"fields": [],
"input": false,
"note": "Keys are handled only while the test area has focus. Browser and OS shortcuts may be reserved.",
"experience": {
"automatic": false,
"single": false,
"inputMaxLength": 1000000,
"inputMode": "text",
"label": "Your text",
"placeholder": "Type or paste your input…",
"help": "Up to 1,000,000 characters. Review the settings before running.",
"helpParts": [
"Up to 1,000,000 characters.",
"Review the settings before running."
],
"action": null
},
"mode": "explicit",
"interactive": true
},
"execution": "Browser interface",
"api": null,
"browser_agent": {
"supported": false,
"name": null,
"discovery": "WebMCP on the human page in a supporting browser",
"verification": "See audit/API-AUDIT.md; availability is not verification"
}
}Page guide
Check which key and modifier signals your browser receives.
How to use Keyboard test
- Focus the keyboard test area.
- Press a key or a key combination.
- Read its key, code, and modifier states. Press Tab to leave the test area.
Useful next steps
What to expect
Check which key and modifier signals your browser receives. The test captures keys only while its text area has focus. Tab moves you out of the test area. Browser and operating-system shortcuts may be reserved.