Exolimbs — Hermes plugin

Give your Hermes agent OpenClaw / ClawHub's hands and feet. Run community skills, an isolated sandbox, a Playwright browser, and multi-language runtimes — through a tiny structured-JSON tool surface, with zero extra LLM tokens on the execution path.

Hermes is the brain. Exolimbs is the deterministic execution substrate. It never calls a model itself, has no conversation/memory/UI, and exposes six tools.

ℹ️ "Exolimbs" is the working title. Rename before any commercial launch — see DESIGN.md → Naming & legal. The package, plugin name, and entry point are all in one place each, so renaming is a 5-minute job.

Tools

Multiple skill markets

Switch the skills marketplace with openclaw_lite.market (or EXOLIMBS_MARKET):

openclaw_lite:
  market: skillhub            # or clawhub
  # registry_base_url: https://clawhub.ai      # clawhub override
  # skillhub_base_url: https://api.skillhub.cn # skillhub override

Adding another market = one adapter class in exolimbs/registries.py.

Two interchangeable backends

Set exolimbs.backend in ~/.hermes/config.yaml (or EXOLIMBS_BACKEND):

Install

As a directory plugin (simplest):

# copy the package into your Hermes plugins dir
cp -r exolimbs ~/.hermes/plugins/exolimbs
hermes plugins enable exolimbs

As a pip package (distribution):

pip install exolimbs           # core
pip install "exolimbs[browser]" # + Playwright
playwright install chromium          # one-time browser download
hermes plugins enable exolimbs

Verify inside a session:

/exo doctor

Configure (~/.hermes/config.yaml)

exolimbs:
  backend: auto            # auto | cli | native
  sandbox_enabled: true
  sandbox_image: "python:3.12-slim"
  sandbox_network: false
  default_timeout_s: 120
  max_retries: 2
  rollback: true
  registry_base_url: "https://clawhub.ai"
  browser_headless: true
  # Pro:
  audit_log: false
  # license_key: "EXL1...."   # or set EXOLIMBS_LICENSE in .env

Free vs Pro (open-core)

• Free: all six tools, both backends, retry/rollback, trust-envelope verify.
• Pro: JSONL audit log, curated/verified skill packs, auto-update, priority support. Unlock with EXOLIMBS_LICENSE. See DESIGN.md for pricing/channels.

Licenses are signed Ed25519 tokens (EXL1.<payload>.<signature>), verified fully offline against an embedded public key — no phone-home, air-gap safe.

Issuing licenses (vendor-side only):

python scripts/gen_keys.py                 # once: make keypair (seed -> .secrets/, git-ignored)
                                           # paste printed public key into exolimbs/_licensing.py
python scripts/issue_license.py --sub alice@example.com --tier pro --days 365
# -> prints EXL1.<...> ; customer sets EXOLIMBS_LICENSE to that token

Revoke an issued license by adding its jti to _REVOKED in _licensing.py and shipping a release.

Security

Third-party skills are untrusted code. Prefer claw_sandbox_exec with network: false for anything you don't fully trust. Without Docker, sandbox calls run locally and are flagged "sandboxed": false.

Dashboard UI (optional)

A web UI ships in dashboard/ for the Hermes dashboard (hermes dashboard). Install the plugin into your Hermes home and restart the dashboard:

cp -r exolimbs "$HERMES_HOME/plugins/exolimbs"   # default HERMES_HOME = ~/.hermes
# restart: hermes dashboard

An Exolimbs tab appears (after Skills) with: status, skill search (ClawHub/SkillHub toggle), curated packs, and a runtime tester. It follows the active dashboard theme automatically (uses the host SDK components). Backend routes are mounted at /api/plugins/exolimbs/ on dashboard startup.

Try it locally (no Hermes, no GUI — it's a headless engine)

Exolimbs has no UI by design; you "experience" it by calling its tools and reading the JSON. The demo script lets you do that directly:

python scripts/demo.py doctor                  # backend / license status
python scripts/demo.py packs                   # curated packs
python scripts/demo.py search github 5         # live ClawHub search
python scripts/demo.py runtime python "print(6*7)"
python scripts/demo.py sandbox "echo hi"
python scripts/demo.py menu                     # interactive

To use it inside the agent instead, copy exolimbs/ into ~/.hermes/plugins/exolimbs/ (or pip install exolimbs), then hermes plugins enable exolimbs and try /exo doctor in a session.

Development

pip install -e ".[dev,browser]"
pytest -q

License

MIT (this plugin). Not affiliated with OpenClaw/ClawHub. See LICENSE.