CarabinerBLOCK
Simple Screen Capture and Remote Control App for Streaming Devices
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
Carabiner is a powerful video capture and remote control application designed for streaming device development and testing. It provides seamless control of Roku, Android-based streaming devices (Fire TV, Google TV, Android TV), Apple TV, and Xumo Stream Box (RDK, experimental) through intuitive floating, resizable windows — and can run multiple capture devices at once, each in its own window linked to its own streaming device.
5bb2d1369a9fOBSERVED · 2026-10-08Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.
claude mcp add carabiner --env APPLE_PASSWORD=${APPLE_PASSWORD} -- npx -y [email protected]{
"mcpServers": {
"carabiner": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"APPLE_PASSWORD": "${APPLE_PASSWORD}"
}
}
}
}Exposed tools (23)
15 read · 7 write · 1 destructive. Blast radius: 1 tool can delete or overwrite — an agent that can be talked into calling a tool can be talked into calling this one.
| Tool | Risk | Description |
|---|---|---|
create_script | write | |
delete_script | destructive | |
get_app_info | read | |
get_current_device | read | |
get_settings | read | |
hide_display | read | |
launch_app | read | |
list_capture_devices | read | |
list_devices | read | |
list_scripts | read | |
list_windows | read | |
run_script | write | |
select_capture_device | read | |
select_device | read | |
send_key | write | |
send_text | write | |
show_display | read | |
start_recording | write | |
stop_recording | write | |
stop_script | write | |
take_screenshot | read | |
toggle_fullscreen | read | |
toggle_on_top | read |
Trust audit
BLOCKgrade F · trust 58/100 Do not install this without reading the findings. The audit found something that could harm you or your machine.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | FAIL |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | WARN |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- declared (1 observation(s))
- Network
- declared (6 observation(s))
- Shell
- declared (5 observation(s))
- Dependencies
- not all pinned
- Secrets in source
- none-found
Findings (25)
exec(`${adbPath} connect ${serial}`, puts);exec(`${adbPath} disconnect ${serial}`, puts);exec(`${adbPath} disconnect`, puts);exec(`${adbPath} -s ${serial} shell input text '${key}'`, puts);exec(`${adbPath} -s ${serial} shell input keyevent ${key}`, puts);placeholder="http://192.168.1.60:8889/stream/whep"
delete_script
adbPath: "/usr/local/bin/adb",
atvremotePath: "/usr/local/bin/atvremote",
} from "../../public/rce-accounts";
import { migrateSettings, makePair, redactSettings } from "../../public/settings";import { normalizeRceAccounts } from "../../public/rce-accounts";import { sendControlKey } from "../../public/stream-signaling";import { dropDuplicateSimulators, simulatorKey } from "../../public/stream-utils";streams: { sources: [{ id: "webrtc-1", type: "webrtc", name: "Cam", url: "http://10.0.0.5:8889/whep" }] },await sendControlKey({ id: "w3", type: "webrtc", url: "http://192.168.1.60:8889/whep" }, "lit_%41", 100);["http://192.168.1.60:8060/keyup/lit_%41", "POST"],
expect(controlValueOf({ controlDeviceId: "10.0.0.5|ecp" }, { ...stream, url: "http://10.0.0.5:8889/whep" })).toBe("10.0.0.5|ecp");<img src="https://img.shields.io/badge/Fire%20TV-FF9900?style=for-the-badge&logo=data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNCAyNCI+PHBhdGggZD0iT
@lvcabral/node-ssdp, @modelcontextprotocol/sdk, auto-launch, electron-log, electron-squirrel-startup, react, react-bootstrap, react-dom
| `get_settings` | Read-only settings snapshot (auth and access tokens redacted) |
`settings.mcp = { enabled, port, token }`. When enabled (toggle in the MCP tab → `MCPSection.js`), `main.js` starts `mcp-server.js` after the windows are created and stops it on `before-quit`. Tool hadocs/screenshots/screenshot-display-menu.gif
docs/screenshots/screenshot-settings.gif
images/icon.icns
Gates applied: no_behavioural_pass.
5bb2d1369a9ffull audit observations/trust-audit/mcp-server/lvcabral__carabiner.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-08 | 5bb2d1369a9f | BLOCK | F | 58 | first audit |
Questions
What is the Carabiner MCP server?
Simple Screen Capture and Remote Control App for Streaming Devices
What tools does Carabiner expose?
23 in total: 15 read-only, 7 that write, and 1 that can delete or overwrite (delete_script). Every one is listed on this page with its risk.
Is Carabiner safe to connect to an agent?
No — not without reading the findings first. The audit graded it F (58/100) and found 5 critical or high issues in the source. Each one is listed on this page with the file and line it is on. Separately from the audit: 1 of its tools can destroy data, so scope the token you give it to what you actually need.
What credentials does Carabiner need?
It reads APPLE_PASSWORD from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.
How does Carabiner run?
It speaks sse and streamable-http, so it runs as a service you connect to over the network. It is published on npm as carabiner at 3.0.0.
How current is this page?
The grade is for one exact copy of the source (5bb2d1369a9f), read on 2026-10-08. The repository is watched and re-audited when it changes.