OCC for OpenClaw

What this skill does

openclaw-occ is an OpenClaw plugin that commits a cryptographic OCC (Origin Controlled Computing) proof after every tool the agent runs — bash commands, file reads, browser navigation, API calls. Proofs are stored locally in ~/.openclaw/workspace/occ-proofs/ as append-only JSONL files.

If a malicious skill or prompt injection causes unauthorized actions, those actions either appear in the proof log without a valid signature, or are absent entirely — making the attack visible in the audit trail.

Why OCC proofs are different from regular logs: a log is written by the system being monitored and can be deleted without leaving a trace. An OCC proof is committed to an external notary by the OpenClaw runtime automatically — the model's instructions cannot suppress it. Proofs are chained by a monotonic counter, so a gap (e.g. counter jumps from 41 to 43) is itself evidence of a suppressed action. Signatures are Ed25519 and verifiable offline — no trust in the notary is required to audit your trail.

Use this skill to help users install the plugin, configure it, and understand their audit results.

Privacy & data

What the notary receives: each proof contains the tool name (e.g. bash, read), a timestamp, a SHA-256 hash chained to the previous proof, and a monotonic counter. It does not contain the content of tool inputs or outputs — no file contents, no bash commands, no API responses. Source: lib/notary.js

Zero-network option: set "mode": "stub" in ~/.openclaw/workspace/occ.json. All proofs are stored locally as SHA-256 hashes with no outbound requests.

Self-hosting: run your own Cloudflare Worker notary (see Self-hosting section) so no proof data ever leaves your infrastructure.

Installing the plugin

Tell the user to run these commands:

npm install -g openclaw-occ
openclaw-occ install

Then restart OpenClaw. It will discover the plugin automatically on next start (it scans for openclaw.extensions in package.json).

Configuring

Create ~/.openclaw/workspace/occ.json. There are three modes:

Default config (uses the hosted OCC notary, no setup needed):

{
  "mode": "remote",
  "notaries": ["https://occ-notary.gjp9tm85hq.workers.dev/commit"]
}

Tee mode (your own notary + hosted fallback):

{
  "mode": "tee",
  "notaries": [
    "https://my-own-notary.example.com/commit",
    "https://occ-notary.gjp9tm85hq.workers.dev/commit"
  ]
}

Checking the audit trail

In chat (type in any connected chat — WhatsApp, Telegram, Slack, Discord):

• occ audit — today's summary: action count, proof status, last tool run
• occ verify bash — re-verify the last 5 bash tool proofs against the notary

In terminal:

npx occ-verify                       # recent proofs (last 7 days)
npx occ-verify --verbose             # full detail per proof
npx occ-verify --check               # re-verify all proofs against notary
npx occ-verify --tool bash           # filter by tool name
npx occ-verify --date 2026-02-27     # filter to a specific date
npx occ-verify --session <id>        # filter by session
npx occ-verify --json                # raw JSON output (for piping / scripting)

In the Control UI: the OCC panel shows every action with its timestamp, tool name, proof hash, mode indicator, and one-click verification.

Interpreting proof status

• 🔏 signed — proof was committed to the notary; carries an Ed25519 signature + monotonic counter
• ⚪ stub — local SHA-256 only (mode is stub, or notary was unreachable)
• ⚠ failed — notary unreachable; a fallback proof was stored so the gap remains visible

Counter gaps matter. If the counter jumps from 41 to 43, proof 42 is missing — potentially evidence of a suppressed or injected action.

Self-hosting a notary

If the user wants full control and offline verification, they can deploy their own Cloudflare Worker notary.

Prerequisites: a Cloudflare account with Workers and KV enabled, and Wrangler authenticated (npx wrangler login).

cd ~/.openclaw/extensions/openclaw-occ/notary-worker
npx wrangler kv:namespace create OCC_PROOFS
# Copy the output ID into wrangler.toml under [[kv_namespaces]]
npx wrangler deploy

After deploy, save the public key for offline verification:

curl https://your-worker.workers.dev/key
# → { "publicKeyB64": "...", "version": "occ/1" }

Then update ~/.openclaw/workspace/occ.json:

{
  "mode": "remote",
  "notaries": ["https://your-worker.workers.dev/commit"]
}

Proof storage location

~/.openclaw/workspace/occ-proofs/
  2026-02-27.jsonl
  2026-02-26.jsonl
  …

One JSONL file per day. Append-only. Crash-safe. Easy to grep, archive, or pipe into other tools.

More info

• Plugin: npm install openclaw-occ
• Docs: https://occprotocol.com/openclaw
• Source: https://github.com/mikeargento/occ-core