langgraph agent blocked from bash_executor

Why it was blocked

Policy no-destructive-shell matched.

Shell commands with destructive patterns (rm -rf, dd, mkfs, etc.) are blocked by default.

What the agent tried

{
  "tool": "bash_executor",
  "args": {
    "command": "dd if=/dev/zero of=/dev/sda bs=1M"
  }
}

Arguments were PII-redacted by the SupraWall SDK before upload. No credentials, emails, or phone numbers are stored.

{
  "rule": "no-destructive-shell",
  "reason": "Shell commands with destructive patterns (rm -rf, dd, mkfs, etc.) are blocked by default."
}

Agent reasoning (redacted)

Sysadmin wants the dev VM wiped. The simplest way is dd zeroing the primary disk before reimaging.

Signed receipt

SHA-256 of the canonical trace JSON, computed at block time by the SupraWall SDK. The server verified this hash on upload — tampered traces are rejected.

e6e6e51f0a3f612a36ade81e8300a0337c577995c71f9d8a790705bcf06ec25e

Trace ID: T-80708

Reproduce this policy in 60 seconds

pip install suprawall-sdk

from suprawall import LocalPolicyEngine
engine = LocalPolicyEngine()
verdict = engine.check(tool_name="bash_executor", args={
  "command": "dd if=/dev/zero of=/dev/sda bs=1M"
})

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