Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add commands/openclaw/crabbox/screenshotgit clone --depth 1 https://github.com/openclaw/crabboxWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00000 | $0.00963 |
| Opus 5 | $0.00000 | $0.00481 |
| Sonnet 5 | $0.00000 | $0.00193 |
| Haiku 4.5 | $0.00000 | $0.00096 |
Grade A, and why
screenshot scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.
screenshot
crabbox screenshot captures a single PNG from a desktop lease without opening a
VNC client. It is the fastest way to confirm what a remote box is rendering.
crabbox warmup --desktop
crabbox screenshot --id swift-crab
crabbox screenshot --id swift-crab --output desktop.png
crabbox screenshot --id swift-crab --network tailscale
How it works
The command resolves and touches the lease the same way crabbox ssh does,
claims it for the current repo if asked, then waits for the loopback desktop/VNC
service to come up before grabbing a frame. The capture method depends on the
target OS:
- Linux captures over SSH. It sources
/var/lib/crabbox/desktop.envwhen present, prefersgrimon Wayland, and otherwise screenshotsDISPLAY=:99withscrot(falling back to ImageMagickimport). If no capture tool is found, it exits with a hint to warm a fresh--desktoplease. - macOS captures the managed Screen Sharing/VNC framebuffer through the
lease SSH tunnel. EC2 Mac SSH sessions cannot reliably run
screencaptureagainst the login-window display, so the framebuffer path is used instead. External macOS leases use the approved operator-managed account credential referenced byexternal.connection.desktop.passwordEnvand authenticate the framebuffer connection with ARD. - Windows creates a one-shot scheduled task inside the logged-in
crabboxconsole session, because non-interactive SSH sessions cannot capture the visible desktop. The screenshot reflects that active console session.
Managed AWS and Azure Windows desktop leases enable auto-logon for the generated
crabbox user, store that password under C:\ProgramData\crabbox, and use it
only on the instance to run the scheduled capture task.
Output path
If --output is omitted, Crabbox writes to the current directory as:
crabbox-<slug-or-id>-screenshot.png
--output accepts any path; missing parent directories are created. On success
the command prints screenshot: <path>.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 3d ago First seen · 96 lines · 0 tokens per session scan A 3e2e4e55fb20
screenshot is a command published in the GitHub repository openclaw/crabbox (1,343 stars, last pushed 3d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 963 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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