ClawWall — Outbound DLP for OpenClaw#

GitHub: https://github.com/Stanxy/clawguard PyPI: https://pypi.org/project/clawwall

ClawWall sits between your AI agent and the outside world. Every outbound tool call is intercepted and scanned against 60+ hard-coded patterns before anything leaves the machine. If content matches — it is blocked or redacted. No LLM, no approximation: regex and entropy only.

Setup#

One command:

bash

bash setup.sh

This installs the Python service, builds the plugin and hook, registers the plugin in your OpenClaw config, sets up a system service, and verifies the health endpoint.

The gateway:startup hook auto-starts the service whenever OpenClaw boots — no manual clawwall command needed.

Trust & Permissions#

What this installs:

ComponentWhat It DoesPython service (port 8642)Receives every outbound tool call for scanningOpenClaw plugin ( before_tool_call)Intercepts outbound content and routes to the serviceStartup hook ( gateway:startup)Auto-starts the service when OpenClaw bootsSQLite databaseStores scan metadata (finding type, severity, action, duration)systemd/launchd serviceFallback auto-start via OS service manager

What the database stores: finding type, severity, position offsets, action taken, and duration. It never stores raw content, secrets, or PII values.

What it does NOT do: no telemetry, no external connections, no data leaves the machine. The service is fully local.

Verify Installation#

bash

# Health check
curl -s http://127.0.0.1:8642/api/v1/health

# Test scan
curl -s -X POST http://127.0.0.1:8642/api/v1/scan \
  -H "Content-Type: application/json" \
  -d '{"content": "key=AKIAIOSFODNN7EXAMPLE"}'

# Dashboard
open http://127.0.0.1:8642/dashboard

What ClawWall Detects#

• Secrets (52 patterns): AWS, GCP, Azure, GitHub, GitLab, Stripe, Square, PayPal, Slack, Discord, Telegram, Twilio, SSH/PGP private keys, database URIs, JWT/Bearer tokens, SaaS API keys, and more
• PII (10 patterns): SSNs, credit cards (Luhn-validated), emails, phone numbers, IP addresses
• Entropy analysis: high-entropy strings that don't match any known pattern
• Custom patterns: user-defined regex via policy YAML

Configuration#

Environment variables (all prefixed CLAWGUARD_):

VariableDefaultDescriptionCLAWGUARD_HOST``0.0.0.0Bind addressCLAWGUARD_PORT``8642PortCLAWGUARD_DATABASE_URL``sqlite+aiosqlite:///~/.config/clawwall/clawwall.dbDatabase pathCLAWGUARD_POLICY_PATH``~/.config/clawwall/policy.yamlPolicy fileCLAWGUARD_LOG_LEVEL``INFOLog verbosity

Policy#

Default policy redacts all findings. Edit via the dashboard or ~/.config/clawwall/policy.yaml:

yaml

default_action: REDACT      # BLOCK | REDACT | ALLOW
redaction:
  strategy: mask             # mask | hash | remove
  mask_char: "*"
  mask_preserve_edges: 4
destination_allowlist: []    # bypass scanning for trusted destinations
destination_blocklist: []    # always reject these destinations
custom_patterns: []          # add your own regex patterns
disabled_patterns: []        # disable specific built-in patterns by name

Policy evaluation order: severity overrides > destination allowlist > destination blocklist > destination rules > agent rules > default action.

Agent Instructions#

You are operating behind ClawWall. All outbound tool calls are scanned before leaving the machine using hard pattern matching — not an LLM.

ResultMeaningALLOWNo sensitive data detected — call went throughREDACTSensitive portions were masked before sendingBLOCKCall rejected — nothing was sent

Best practices:

• Never include raw API keys, tokens, or PII in outbound calls
• Reference credentials by name ( $OPENAI_API_KEY), not by value
• If blocked, check findings to see what matched, remove the sensitive data, and retry
• False positive? Tell the user to adjust the policy via the dashboard at http://localhost:8642/dashboard

Troubleshooting#

ProblemSolutionService not startingCheck ~/.config/clawwall/clawwall.log for errorsPort 8642 in useAnother process is using the port — check with lsof -i :8642Plugin not interceptingVerify plugin is registered in ~/.openclaw/openclaw.jsonFalse positivesDisable specific patterns via disabled_patterns in policy YAMLHook not firingRebuild hook: cd hooks/openclaw && npm run build``clawwall not foundEnsure pip install directory is on PATH, or use python3 -m clawguard