Crabbox
SkillDev toolsLets your agent run validation tasks on remote machines across Linux, macOS, Windows, and WSL2.
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Then ask your AI: use the Crabbox skill
About this capability
Use the Crabbox wrapper for OpenClaw remote validation across Linux, macOS, Windows, and WSL2, including delegated Blacksmith Testbox proof. Report the actual provider and id.
What this skill tells your AI
The instructions your AI receives, as published by openclaw/imsg in .agents/skills/crabbox/SKILL.md and read by ahel’s review.
Use the Crabbox wrapper when OpenClaw needs remote Linux proof for broad tests, CI-parity checks, secrets, hosted services, Docker/E2E/package lanes, warmed reusable boxes, sync timing, logs/results, cache inspection, or lease cleanup.
Crabbox is the transport/orchestration surface. The actual backend can be:
- brokered AWS Crabbox: direct provider,
provider=aws, lease ids likecbx_...,syncDelegated=false - Blacksmith Testbox through Crabbox: delegated provider,
provider=blacksmith-testbox, ids liketbx_...,syncDelegated=true
For OpenClaw maintainer broad pnpm gates, Blacksmith Testbox through the
Crabbox wrapper is acceptable and often preferred when the standing Testbox
rules apply. Do not describe those runs as "AWS Crabbox"; report them as
Testbox-through-Crabbox with the tbx_... id and Actions run.
Use the repo .crabbox.yaml brokered AWS path when the task specifically needs
direct AWS Crabbox behavior, persistent direct-provider leases, --fresh-pr,
--full-resync, environment forwarding, capture/download support, or provider
comparison. Use --provider blacksmith-testbox when the task needs OpenClaw
maintainer Testbox proof, prepared CI environment, broad/heavy pnpm gates, or
the user asks for Testbox/Blacksmith.
First Checks
- Run from the repo root. Crabbox sync mirrors the current checkout.
- Check the wrapper and providers before remote work:
command -v crabbox
../crabbox/bin/crabbox --version
pnpm crabbox:run -- --help | sed -n '1,120p'
../crabbox/bin/crabbox desktop launch --help
../crabbox/bin/crabbox webvnc --help
- OpenClaw scripts prefer
../crabbox/bin/crabboxwhen present. The user PATH shim can be stale. - Check
.crabbox.yamlfor direct-provider defaults. Omitting--providermeans brokered AWS today. - The brokered AWS default is a Linux developer image in
eu-west-1; the repo config pins hoteu-west-1a/b/cplacement so Fast Snapshot Restore can apply. If warmup drifts well past the minute-scale path, verify image promotion, region/AZ placement, and FSR state before blaming OpenClaw. - For broad OpenClaw maintainer
pnpmgates, prefer the repo wrapper with--provider blacksmith-testboxor the repo Testbox helpers when the standing Testbox policy applies. - Always report the actual provider and id.
cbx_...means AWS Crabbox;tbx_...means Blacksmith Testbox through Crabbox. If the output only saysblacksmith testbox list, useblacksmith testbox list --allbefore concluding no box exists. - If a warm direct-provider lease smells stale, retry with
--full-resync(alias--fresh-sync) before replacing the lease. This resets the remote workdir, skips the fingerprint fast path, reseeds Git when possible, and uploads the checkout from scratch. - For live/provider bugs, use the configured secret workflow before downgrading to mocks. Copy only the exact needed key into the remote process environment for that one command. Do not print it, do not sync it as a repo file, and do not leave it in remote shell history or logs. If no secret-safe injection path is available, say true live provider auth is blocked instead of silently using a fake key.
- Prefer local targeted tests for tight edit loops. Broad gates belong remote.
- Do not treat inherited shell env as operator intent. In particular,
OPENCLAW_LOCAL_CHECK_MODE=throttledfrom the local shell is not permission to move broadpnpm check:changed,pnpm test:changed, fullpnpm test, or lint/typecheck fan-out onto the laptop. - Only use
OPENCLAW_LOCAL_CHECK_MODE=throttled|fullwhen the user explicitly asks for local proof in the current task. If Testbox is queued or capacity is constrained, report the blocker and keep only targeted local edit-loop checks running.
macOS And Windows Targets
Use these only when the task needs an existing non-Linux host. OpenClaw broad Linux validation uses the repo Crabbox config unless a provider is explicitly requested.
Native brokered Windows is available for Windows-specific proof. Use the AWS
developer image in us-west-2 on demand; it has the expected OpenClaw developer
toolchain and Docker image cache. Keep broad Linux gates on Linux/Testbox unless
the bug is Windows-specific:
../crabbox/bin/crabbox warmup \
--provider aws \
--target windows \
--windows-mode normal \
--region us-west-2 \
--market on-demand \
--timing-json
The hydrate workflow assumes Docker should already be baked into Linux images and only installs it as a fallback. Do not add per-run Docker installs to proof commands unless the image probe shows Docker is actually missing.
When the user explicitly asks for brokered macOS runners, use Crabbox AWS
macOS only after confirming the deployed coordinator supports EC2 Mac host
lifecycle/image routes and the operator has AWS EC2 Mac Dedicated Host quota
and IAM. Prefer CRABBOX_HOST_ID for a known Crabbox-managed Dedicated Host,
or run the no-spend preflight first:
crabbox admin hosts quota --provider aws --target macos --region eu-west-1 --type mac2.metal --json
crabbox admin hosts allocate --provider aws --target macos --region eu-west-1 --type mac2.metal --dry-run --json
CRABBOX_MACOS_TYPES=all scripts/macos-host-region-preflight.sh
Do not silently substitute AWS macOS for normal OpenClaw Linux proof. Report paid-host blockers as quota, IAM, coordinator deployment, or host availability instead of falling back to local macOS.
Crabbox supports static SSH targets:
../crabbox/bin/crabbox run --provider ssh --target macos --static-host mac-studio.local -- xcodebuild test
../crabbox/bin/crabbox run --provider ssh --target windows --windows-mode normal --static-host win-dev.local -- pwsh -NoProfile -Command "dotnet test"
../crabbox/bin/crabbox run --provider ssh --target windows --windows-mode wsl2 --static-host win-dev.local -- pnpm test
target=macosandtarget=windows --windows-mode wsl2use the POSIX SSH, bash, Git, rsync, and tar contract.- Native Windows uses OpenSSH, PowerShell, Git, and tar; sync is manifest tar
archive transfer into
static.workRoot. Direct native Windows runs support--script*,--env-from-profile,--preflight, and PowerShell--shell. crabbox actions hydrate/registerare Linux-only today; use plaincrabbox runloops for static macOS and Windows hosts.- Live proof needs a reachable, operator-managed SSH host. Without one, verify
with
../crabbox/bin/crabbox run --help, config/flag tests, and the Crabbox Go test suite.
Direct Brokered AWS Backend
Use this when the task needs direct AWS Crabbox semantics rather than the prepared Blacksmith Testbox CI environment.
Changed gate:
pnpm crabbox:run -- \
--idle-timeout 90m \
--ttl 240m \
--timing-json \
--shell -- \
"env CI=1 NODE_OPTIONS=--max-old-space-size=4096 OPENCLAW_TEST_PROJECTS_PARALLEL=6 OPENCLAW_VITEST_MAX_WORKERS=1 OPENCLAW_VITEST_NO_OUTPUT_TIMEOUT_MS=900000 pnpm test:changed"
Full suite:
pnpm crabbox:run -- \
--idle-timeout 90m \
--ttl 240m \
--timing-json \
--shell -- \
"env CI=1 NODE_OPTIONS=--max-old-space-size=4096 OPENCLAW_TEST_PROJECTS_PARALLEL=6 OPENCLAW_VITEST_MAX_WORKERS=1 OPENCLAW_VITEST_NO_OUTPUT_TIMEOUT_MS=900000 pnpm test"
Focused rerun:
pnpm crabbox:run -- \
--idle-timeout 90m \
--ttl 240m \
--timing-json \
--shell -- \
"env CI=1 NODE_OPTIONS=--max-old-space-size=4096 OPENCLAW_VITEST_MAX_WORKERS=1 OPENCLAW_VITEST_NO_OUTPUT_TIMEOUT_MS=900000 pnpm test <path-or-filter>"
Read the JSON summary. Useful fields:
provider:awsleaseId:cbx_...syncDelegated:falsecommandPhases: populated when the command printsCRABBOX_PHASE:<name>commandMs/totalMsexitCode
Crabbox should stop one-shot AWS leases automatically after the run. Verify cleanup when a run fails, is interrupted, or the command output is unclear:
../crabbox/bin/crabbox list --provider aws
Blacksmith Testbox Through Crabbox
Use this for OpenClaw maintainer broad/heavy pnpm gates when the prepared CI
environment is the right proof surface:
node scripts/crabbox-wrapper.mjs run \
--provider blacksmith-testbox \
--blacksmith-org openclaw \
--blacksmith-workflow .github/workflows/ci-check-testbox.yml \
--blacksmith-job check \
--blacksmith-ref main \
--idle-timeout 90m \
--ttl 240m \
--timing-json \
-- \
CI=1 NODE_OPTIONS=--max-old-space-size=4096 OPENCLAW_TEST_PROJECTS_PARALLEL=6 OPENCLAW_VITEST_MAX_WORKERS=1 OPENCLAW_VITEST_NO_OUTPUT_TIMEOUT_MS=900000 OPENCLAW_TESTBOX=1 OPENCLAW_TESTBOX_REMOTE_RUN=1 pnpm check:changed
Read the JSON summary and the Testbox line. Useful fields:
provider:blacksmith-testboxleaseId:tbx_...syncDelegated:truesyncPhases: delegated/skipped because Blacksmith owns checkout/sync- Actions run URL/id from the Testbox output
exitCode
blacksmith testbox list may hide hydrating or ready boxes. Use:
blacksmith testbox list --all
blacksmith testbox status <tbx_id>
Observability Flags
Use these on debugging runs before inventing ad hoc logging:
--preflight: prints run context, workspace mode, SSH target, remote user/cwd, and target-specific tool probes. Defaults covergit,tar,node,npm,corepack,pnpm,yarn,bun,docker, plus POSIXsudo/apt/bubblewrapand native Windowspowershell/execution_policy/longpaths/temp/pwsh. Add--preflight-tools node,bun,docker,CRABBOX_PREFLIGHT_TOOLS, or reporun.preflightToolsto replace the list.defaultexpands built-ins;noneprints only the workspace summary. Preflight is diagnostic only; install toolchains through Actions hydration, images, devcontainer/Nix/mise/asdf, or the run script. Onblacksmith-testbox, this prints a delegated-unsupported note because the workflow owns setup.CRABBOX_ENV_ALLOW=NAME,...: forwards only listed local env vars for direct providers and printsset len=N secret=truestyle summaries. Onblacksmith-testbox, env forwarding is unsupported; put secrets in the Testbox workflow instead.--env-from-profile <file>plus--allow-env NAME: loads simpleexport NAME=value/NAME=valuelines from a local profile without executing it, then forwards only allowlisted names.--allow-envis repeatable and comma-separated. Profile values override ambient allowlisted env values for that run. Direct POSIX, WSL2, and native Windows runs are supported; delegated providers are not. Crabbox probes the uploaded profile remotely and prints redacted presence/length metadata before the command.--env-helper <name>: with--env-from-profileon POSIX SSH targets, persists.crabbox/env/<name>and.crabbox/env/<name>.envso follow-up commands on the same lease can run through./.crabbox/env/<name> <command>. Use only on leases you control; the profile stays until cleanup, lease reset, or--full-resync.--script <file>/--script-stdin: upload a local script into.crabbox/scripts/and execute it on the remote box. Shebang scripts execute directly on POSIX; scripts without a shebang run throughbash. Native Windows uploads run through Windows PowerShell, and Crabbox appends.ps1when needed. Arguments after--become script args.--fresh-pr owner/repo#123|URL|number: skip dirty local sync and create a fresh remote checkout of the GitHub PR. Bare numbers use the current repo's GitHub origin. Add--apply-local-patchonly when the current localgit diff --binary HEADshould be applied on top of that PR checkout.--full-resync/--fresh-sync: reset a stale direct-provider workdir before syncing. Use after sync fingerprints look wrong, SSH times out before sync, or rsync watchdog output suggests it. It is redundant with--fresh-pr, incompatible with--no-sync, and unsupported by delegated providers.--capture-stdout <path>/--capture-stderr <path>: write remote streams to local files and keep binary/noisy output out of retained logs. Parent directories must already exist. These are direct-provider only.--capture-on-fail: on non-zero direct-provider exits, downloads.crabbox/captures/*.tar.gzwithtest-results,playwright-report,coverage, JUnit XML, and nearby logs. Treat as secret-bearing until reviewed.--keep-on-failure: leave a failed one-shot lease alive for live debugging until idle/TTL expiry. Useful on direct providers and delegated one-shots.--timing-json: final machine-readable timing. Addecho CRABBOX_PHASE:install,CRABBOX_PHASE:test, etc. in long shell commands; direct providers and Blacksmith Testbox both report them ascommandPhases.
Live-provider debug template for direct AWS/Hetzner leases:
mkdir -p .crabbox/logs
pnpm crabbox:run -- --provider aws \
--preflight \
--allow-env OPENAI_API_KEY,OPENAI_BASE_URL \
--timing-json \
--capture-stdout .crabbox/logs/live-provider.stdout.log \
--capture-stderr .crabbox/logs/live-provider.stderr.log \
--capture-on-fail \
--shell -- \
"echo CRABBOX_PHASE:install; pnpm install --frozen-lockfile; echo CRABBOX_PHASE:test; pnpm test:live"
Do not pass --capture-*, --download, --checksum, --force-sync-large, or
--sync-only to delegated providers. Also do not pass --script*,
--fresh-pr, --full-resync, or --env-helper there. Crabbox rejects these
because the provider owns sync or command transport. --keep-on-failure is OK
for delegated one-shots when you need to inspect a failed lease.
Efficient Bug E2E Verification
Use the smallest Crabbox lane that proves the reported user path, not just the touched code. Aim for one after-fix E2E proof before commenting, closing, or opening a PR for a user-visible bug.
When the user says "test in Crabbox", do not simply copy tests to the remote box and run them there. Crabbox is for remote real-scenario proof: copy or install OpenClaw as the user would, run the same setup/update/CLI/Gateway/API call that failed, and capture behavior from that entrypoint. For regressions or bug reports, prove the broken state first when feasible, then run the same scenario after the fix.
Pick the lane by symptom:
- Docker/setup/install bug: build a package tarball and run the matching
scripts/e2e/*-docker.shor package script. This proves npm packaging, install paths, runtime deps, config writes, and container behavior. - Provider/model/auth bug: prefer true live E2E. Use the configured secret workflow, then inject the single needed key into Crabbox if needed. Scrub unrelated provider env vars in the child command so interactive defaults do not drift to another provider. If only a dummy key is used, label the proof narrowly, e.g. "UI/install path only; live provider auth not exercised."
- Channel delivery bug: use the channel Docker/live lane when available; include setup, config, gateway start, send/receive or agent-turn proof, and redacted logs.
- Gateway/session/tool bug: prefer an end-to-end CLI or Gateway RPC command that creates real state and inspects the resulting files/API output.
- Pure parser/config bug: targeted tests may be enough, but still run a Crabbox command when OS, package, Docker, secrets, or service lifecycle could change behavior.
Efficient flow:
- Reproduce or prove the pre-fix symptom from the real user-facing entrypoint when feasible. If the issue cannot be reproduced, capture the exact command and observed behavior instead.
- Patch locally and run narrow local tests for edit speed.
- Run one Crabbox E2E command that starts from the user-facing entrypoint: package install, Docker setup, onboarding, channel add, gateway start, or agent turn as appropriate.
- Record proof as: Testbox id, command, environment shape, redacted secret source, and copied success/failure output.
- If the issue says "cannot reproduce", ask for the missing config/log fields that would distinguish the tested path from the reporter's path.
Keep it efficient:
- Reuse existing E2E scripts and helper assertions before writing ad hoc shell.
- Use
--script <file>or--script-stdinfor multi-line E2E commands instead of quote-heavy--shellstrings on direct SSH providers. - Use
--fresh-pr <pr>when validating an upstream PR in isolation from the local dirty tree. Add--apply-local-patchonly when testing a local fixup on top of that PR. - Use
--full-resyncbefore replacing a warmed direct-provider lease when the remote workdir or sync fingerprint appears stale. - Use one-shot Crabbox for a single proof; use a reusable Testbox only when several commands must share built images, installed packages, or live state.
- Prefer
OPENCLAW_CURRENT_PACKAGE_TGZwith Docker/package lanes when testing a candidate tarball; prefer the repo's package helper instead of direct source execution when the bug might be packaging/install related. - Keep secrets redacted. It is fine to report key presence, source, and length; never print secret values.
- Include
--timing-jsonon broad or flaky runs when command duration or sync behavior matters.
Before/after PR proof on delegated Testbox:
- For PRs that should prove "broken before, fixed after", compare base and PR
on the same Testbox when practical. Fetch both refs, create detached temp
worktrees under
/tmp, install in each, then run the same harness twice. - Do not checkout base/PR refs in the synced repo root. Delegated Testbox sync
may leave the root dirty with local files;
git checkoutcan abort or mix proof state. - Temp harness files under
/tmpdo not resolve repo packages by default. Put the harness inside the worktree, or in ESM usecreateRequire(path.join(process.cwd(), "package.json"))before requiring workspace deps such as@lydell/node-pty. - For full-screen TUI/CLI bugs, a PTY harness is stronger than helper-only assertions. Use a real PTY, wait for visible lifecycle markers, send input, then send control keys and assert process exit/stuck behavior.
- When validating a rebased local branch before push, remember delegated sync usually validates synced file content on a detached dirty checkout, not a remote commit object. Record the local head SHA, changed files, Testbox id, and final success markers; after pushing, ensure the pushed SHA has the same file content.
- If GitHub CI is still queued but the exact changed content passed Testbox
pnpm check:changed,pnpm check:test-types, and the real E2E proof, it is reasonable to merge once required checks allow it. Note any still-running unrelated shards in the proof comment instead of waiting forever.
Interactive CLI/onboarding:
- For full-screen or prompt-heavy CLI flows, run the target command inside tmux
on the Crabbox and drive it with
tmux send-keys; capture proof withtmux capture-pane, redacted throughsed. - Prefer deterministic arrow navigation over search typing for Clack-style
searchable selects. Raw
send-keys -l openaimay not trigger filtering in a tmux pane; inspect option order locally or on-box and send exact Down/Enter sequences. - Isolate mutable state with
OPENCLAW_STATE_DIR=$(mktemp -d). Plugin npm installs live under that state dir (npm/node_modules/...), not underOPENCLAW_CONFIG_DIR. Verify downloads by checking the state dir, package lock, and installed package metadata. - To test automatic setup installs against local package artifacts, use
OPENCLAW_ALLOW_PLUGIN_INSTALL_OVERRIDES=1plusOPENCLAW_PLUGIN_INSTALL_OVERRIDES='{"plugin-id":"npm-pack:/tmp/plugin.tgz"}'. Pack withnpm pack, set an isolatedOPENCLAW_STATE_DIR, and verify the package undernpm/node_modules. Overrides are test-only and must not be treated as official/trusted-source installs. - For OpenAI/Codex onboarding proof, the useful markers are the UI line
Installed Codex plugin,npm/node_modules/@openclaw/codex, and the package-lock entry showing the bundled@openai/codexdependency. A dummy OpenAI-shaped key can prove only UI/install behavior; it is not live auth.
Reuse And Keepalive
For most Crabbox calls, one-shot is enough. Use reuse only when you need multiple manual commands on the same hydrated box.
If Crabbox returns a reusable id or you intentionally keep a lease:
pnpm crabbox:run -- --id <cbx_id-or-slug> --no-sync --timing-json --shell -- "pnpm test <path>"
Stop boxes you created before handoff:
pnpm crabbox:stop -- <id-or-slug>
blacksmith testbox stop --id <tbx_id>
Interactive Desktop And WebVNC
Prefer WebVNC for human inspection because the browser portal can preload the
lease VNC password and avoids a native VNC client's copy/paste/password dance.
Use native crabbox vnc only when WebVNC is unavailable, the browser portal is
broken, or the user explicitly wants a local VNC client.
Common desktop flow:
../crabbox/bin/crabbox warmup --provider hetzner --desktop --browser --class standard --idle-timeout 60m --ttl 240m
../crabbox/bin/crabbox desktop launch --provider hetzner --id <cbx_id-or-slug> --browser --url https://example.com --webvnc --open --take-control
Useful WebVNC commands:
../crabbox/bin/crabbox webvnc --provider hetzner --id <cbx_id-or-slug> --open --take-control
../crabbox/bin/crabbox webvnc daemon start --provider hetzner --id <cbx_id-or-slug> --open --take-control
../crabbox/bin/crabbox webvnc daemon status --provider hetzner --id <cbx_id-or-slug>
../crabbox/bin/crabbox webvnc daemon stop --provider hetzner --id <cbx_id-or-slug>
../crabbox/bin/crabbox webvnc status --provider hetzner --id <cbx_id-or-slug>
../crabbox/bin/crabbox webvnc reset --provider hetzner --id <cbx_id-or-slug> --open --take-control
../crabbox/bin/crabbox desktop doctor --provider hetzner --id <cbx_id-or-slug>
../crabbox/bin/crabbox desktop click --provider hetzner --id <cbx_id-or-slug> --x 640 --y 420
../crabbox/bin/crabbox desktop paste --provider hetzner --id <cbx_id-or-slug> --text "user@example.com"
../crabbox/bin/crabbox desktop key --provider hetzner --id <cbx_id-or-slug> ctrl+l
../crabbox/bin/crabbox artifacts collect --id <cbx_id-or-slug> --all --output artifacts/<slug>
../crabbox/bin/crabbox artifacts publish --dir artifacts/<slug> --pr <number>
desktop launch --webvnc --open is usually the nicest one-shot: it starts the
browser/app inside the visible session, bridges the lease into the authenticated
WebVNC portal, and opens the portal. Keep browsers windowed for human QA; use
--fullscreen only for capture/video workflows.
For human handoff, include --take-control so the opened portal viewer gets
keyboard/mouse control automatically instead of landing as an observer.
Human handoff preflight:
- Do not assume a visible desktop or launched browser means the repo CLI/app is
installed, built, or on the interactive terminal's
PATH. - Before handing WebVNC to a human tester, prove the expected command from the
same kept lease and from a neutral directory such as
~. - If the handoff needs repo-local code, sync/build/link it explicitly on that lease. Source-tree CLIs often need build output before a symlink works.
- Prefer a real
command -v <expected-command> && <expected-command> --versioncheck over a repo-root-onlypnpm ...command.
Generic handoff repair pattern:
../crabbox/bin/crabbox run --id <cbx_id-or-slug> --full-resync --shell -- \
"set -euo pipefail
pnpm install --frozen-lockfile
pnpm build
sudo ln -sf \"\$PWD/<cli-entry>\" /usr/local/bin/<expected-command>
cd ~
command -v <expected-command>
<expected-command> --version"
If Crabbox Fails
Shortened here. Read the whole file on GitHub.
Signals
- GitHub stars
- 1k
- Forks
- 180
- Last commit
- Sep 2026
ahel review
K1binfo
installs-packages
Automated review, not a security audit. Ruleset v1+k2.
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crabbox-3- Source
- github.com/openclaw/imsg