ValidantLab readiness artifact
Executive summary
Checkout Support Agent begins at 55/100 readiness. The critical finding: Stripe charge metadata reaches an LLM summarization prompt and transcript store without redaction. Cardholder name and billing email tied to a charge are individually identifiable personal data, so retaining them in model context and transcripts exceeds data minimisation under GDPR. Evidence support improves after approval of the recommended fix, while human review remains required for final use.
Scope
validant-labs/checkout-agent on release/demo. Repository signals, React + Stripe + Clerk posture, deployment context, identity claims, and generated remediation evidence for the flagged flow.
Critical finding
Payment metadata is sent to the support summarizer. Charge metadata including billing email and the last four digits is passed verbatim into a summarization prompt, then stored in support transcripts. The model context and transcript log now hold payment-related personal data.
Remediation
Tokenize PAN-adjacent fields and redact billing identifiers before the prompt, and scope transcript retention. Human review required before approval. Fixes require approval before evidence is marked generated.
Current state
Evidence table
| Artifact | Status | Reviewer note |
|---|---|---|
| No personal data-flow diagram for the summarizer path. | Missing or partial | Derived from approved demo flow state. |
| Missing redaction test on model prompt inputs. | Missing or partial | Derived from approved demo flow state. |
| No reviewer sign-off for sharing payment data with the model. | Human review required | Reviewer must confirm final control language. |
| Retention owner undefined for support transcripts. | Missing or partial | Derived from approved demo flow state. |
Residual risk
After redaction and scoped retention, residual risk is Low. Transcripts written before the fix may still hold raw billing identifiers and require a retention review. Human review required.
Reviewer sign-off
Accountable reviewer
Maya Chen
Role
Security Program Lead
Decision
Pending review
Sign-off records the accountable reviewer for this readiness artifact. Fixes require approval, and final readiness decisions still require human review.
This artifact can support readiness review, but control ownership, implementation safety, and final wording still require accountable human review.
This is a demo readiness artifact, not a compliance certification or legal opinion.