This content originally appeared on DEV Community and was authored by João André Gomes Marques
Your AI agent passes a context dict to every LLM call. That dict might contain credit card numbers, SSNs, API keys, or email addresses. If the agent signs that context without checking it first, you just created a permanent, cryptographically-verified record of leaked PII.
asqav's content scanning pipeline inspects the context before signing. If it finds sensitive data, the sign request is rejected.
How it works
When you call agent.sign(), asqav's API runs the context through pattern matchers for PII categories: credit cards, government IDs, API keys, emails, phone numbers. If anything matches, the request fails with a clear error.
import asqav
asqav.init(api_key="sk_live_...")
agent = asqav.Agent.create("data-pipeline")
# This context contains a credit card number
context = {
"customer_name": "Jane Doe",
"payment": "4111-1111-1111-1111",
"action": "process_refund"
}
try:
sig = agent.sign("payment:refund", context)
except asqav.APIError as e:
print(e) # Content policy violation: credit card number detected
The sign call never completes. No signature is created. No PII ends up in your audit trail.
What gets scanned
- Credit card numbers (Luhn-validated)
- Social security numbers
- API keys and secrets (common patterns)
- Email addresses in unexpected fields
Scanning runs server-side. You don't need to add any client code beyond the normal agent.sign() call. It's on by default for Pro tier and above.
Why this matters
Audit trails are permanent. If PII lands in a signed record, you can't delete it without breaking the signature chain. Scanning before signing prevents the problem at the source.
pip install asqav
This content originally appeared on DEV Community and was authored by João André Gomes Marques
João André Gomes Marques | Sciencx (2026-03-27T00:34:44+00:00) Stop AI Agents from Leaking PII. Retrieved from https://www.scien.cx/2026/03/27/stop-ai-agents-from-leaking-pii/
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