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European E-commerce AI Agents: PCI-DSS and GDPR Compliance with UAPK Gateway

· 8 min read
David Sanker
David Sanker
Lawyer, Legal Knowledge Engineer & UAPK Inventor

TL;DR​

  • GDPR Article 22 requires explicit consent for automated decisions affecting customers, including AI-processed refunds
  • PCI-DSS Requirements 3.2 and 7.1 prohibit storing PAN data and mandate access controls for cardholder information
  • UAPK Gateway enforces €500 refund caps, EEA-only data transfers, and manager approval for refunds above €200

The Problem​

Say you run a European e-commerce company processing thousands of customer refund requests daily. You've built an AI customer service agent on Make.com that reads incoming emails, classifies refund requests, processes payments through Stripe, queries your order database, and sends confirmation emails. This automation saves hours of manual work, but it creates a compliance nightmare.

Under GDPR Article 22, automated decision-making that significantly affects individuals requires explicit consent or human oversight. Refund decisions clearly fall into this category. Article 44-49 restricts cross-border data transfers outside the EEA unless adequate safeguards exist. Since Stripe operates from the US, every payment API call potentially violates transfer restrictions.

PCI-DSS adds another layer of complexity. Requirement 3.2 strictly prohibits storing primary account numbers (PAN) after authorization, while Requirement 7.1 mandates role-based access controls for cardholder data. Your AI agent needs payment information to process refunds, but it cannot store, log, or export card numbers. Requirements 10.2 and 10.3 demand detailed audit logs for all cardholder data access, retained for at least one year.

The technical challenge becomes clear: how do you give an AI agent enough access to process refunds while ensuring it never touches prohibited data, only operates within approved jurisdictions, and maintains complete audit trails? Traditional API gateways don't understand payment compliance or GDPR transfer restrictions. You need enforcement at the tool level, not just the network level.

How UAPK Gateway Handles It​

UAPK Gateway solves this through granular policy controls that understand both the technical requirements and regulatory context. Here's the manifest configuration for our e-commerce refund agent:

{
  "agent_id": "ecommerce-refund-agent",
  "version": "1.0",
  "policy": {
    "tools": {
      "allowlist": ["stripe_refund_api", "sendgrid_email", "order_lookup_db"],
      "denylist": ["pan_storage", "pan_log", "raw_card_export"]
    },
    "budgets": {
      "per_action_type": {
        "refund": {"count": 100, "window": "24h"},
        "email": {"count": 500, "window": "24h"}
      },
      "amount_caps": {
        "refund": {"max_amount": 500, "currency": "EUR"},
        "daily_refund_total": {"max_amount": 5000, "currency": "EUR"}
      }
    },
    "approval_thresholds": {
      "refund": {
        "amount": 200,
        "currency": "EUR",
        "approver_role": "manager"
      }
    },
    "rate_limits": {
      "refund": {"requests": 60, "window": "60s"}
    },
    "counterparty_restrictions": {
      "allowlist": ["stripe.com", "sendgrid.net", "internal-db.company.com"]
    },
    "jurisdiction_controls": {
      "allowlist": ["EEA"],
      "data_transfer_basis": "adequacy_decision"
    }
  }
}

The tool allowlist ensures the agent can only use approved APIs: Stripe for refunds, SendGrid for emails, and your internal order database. The denylist explicitly blocks any tools that might store, log, or export card numbers, addressing PCI-DSS Requirement 3.2 directly.

Budget controls implement multi-layered protection. The €500 refund cap prevents excessive individual transactions, while the €5,000 daily limit controls aggregate exposure. The 100 refunds per day limit prevents bulk processing abuse, and the 60 requests per minute rate limit stops API flooding.

The approval threshold at €200 ensures human oversight for significant refunds, satisfying GDPR Article 22's requirements for meaningful human involvement in automated decisions. The jurisdiction allowlist restricts all external API calls to EEA-approved services, with an explicit adequacy decision basis for Stripe transfers.

Here's how you'd implement the SDK integration:

from uapk_gateway import Gateway

gateway = Gateway(
    manifest_path="ecommerce-refund-manifest.json",
    api_key=os.environ["UAPK_API_KEY"]
)

async def process_refund_request(email_content, customer_id):
    # Gateway validates this action against policy
    result = await gateway.execute_action(
        action_type="refund",
        tool="stripe_refund_api",
        parameters={
            "customer_id": customer_id,
            "amount": extract_amount(email_content),
            "reason": "customer_request"
        },
        context={
            "original_email": email_content,
            "processing_agent": "ai"
        }
    )
    
    if result.requires_approval:
        await gateway.request_approval(
            action_id=result.action_id,
            approver_role="manager"
        )
    
    return result

The Integration​

The Make.com integration connects through UAPK Gateway's HTTP module, which replaces direct API calls with policy-enforced requests. Your Make.com scenario looks like this:

  1. Email Trigger: Gmail/Outlook module watches for refund requests
  2. AI Classification: OpenAI module categorizes the email and extracts refund amount
  3. UAPK Gateway HTTP Module: Replaces direct Stripe API call
  4. Conditional Logic: Routes based on gateway response (approved/requires approval)
  5. Email Confirmation: SendGrid module (also through UAPK Gateway)

The key integration point is the UAPK Gateway HTTP module configuration:

Endpoint: https://api.uapkgateway.com/v1/execute
Method: POST
Headers: 
  Authorization: Bearer {{UAPK_API_KEY}}
  Content-Type: application/json

Body:
{
  "agent_id": "ecommerce-refund-agent",
  "action_type": "refund",
  "tool": "stripe_refund_api",
  "parameters": {
    "customer_id": "{{email.customer_id}}",
    "amount": "{{ai.extracted_amount}}",
    "currency": "EUR",
    "reason": "customer_request"
  },
  "context": {
    "original_email": "{{email.body}}",
    "classification_confidence": "{{ai.confidence}}"
  }
}

Instead of calling Stripe directly, Make.com sends the refund request to UAPK Gateway, which applies all policy controls before executing the actual Stripe API call. If the amount exceeds €200, the gateway returns a requires_approval status, and Make.com routes to an approval workflow that notifies managers.

The architecture ensures that no unauthorized API calls reach external services. Even if someone compromises your Make.com account, they cannot bypass the policy controls because every external action must pass through the gateway.

For email confirmations, a similar HTTP module configuration handles SendGrid:

curl -X POST https://api.uapkgateway.com/v1/execute \
  -H "Authorization: Bearer $UAPK_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "agent_id": "ecommerce-refund-agent", 
    "action_type": "email",
    "tool": "sendgrid_email",
    "parameters": {
      "to": "[email protected]",
      "subject": "Refund Processed",
      "body": "Your refund of €150 has been processed."
    }
  }'

Compliance Mapping​

Here's how UAPK Gateway features map to specific regulatory requirements:

PCI-DSS Requirement 3.2 (No PAN storage after authorization)

  • Tool denylist blocks pan_storage, pan_log, raw_card_export
  • Audit logs record that these tools were requested and denied
  • Only approved payment processing tools can access card data

PCI-DSS Requirement 7.1 (Role-based access to cardholder data)

  • Counterparty allowlist restricts payment API calls to Stripe only
  • Amount caps limit exposure per transaction and per day
  • Tool allowlist ensures only authorized payment processing functions

GDPR Article 22 (Automated decision-making rights)

  • Approval thresholds require human review for refunds above €200
  • Context logging records AI confidence levels and decision factors
  • Customers can request manual review through the approval workflow

GDPR Articles 44-49 (International data transfers)

  • Jurisdiction allowlist restricts external API calls to EEA services
  • Adequacy decision basis documented for US transfers (Stripe)
  • Data transfer audit trail maintained for supervisory authorities

PCI-DSS Requirement 10.2-10.3 (Audit logging)

  • All payment API calls logged with timestamps and user context
  • Failed attempts (policy violations) recorded with denial reasons
  • Logs retained for required periods with tamper-evident storage

GDPR Article 5(1)(f) (Data security)

  • Rate limiting prevents brute force attacks on payment APIs
  • Budget controls limit blast radius of potential breaches
  • Policy violations immediately block further actions

The gateway maintains separate retention periods: PCI-DSS audit logs for one year minimum, GDPR processing records for two years, ensuring compliance with both regulatory frameworks simultaneously.

What This Looks Like in Practice​

When a customer emails requesting a €180 refund, here's the complete flow:

  1. Make.com receives the email and triggers the AI classification workflow

  2. OpenAI extracts the refund amount (€180) and customer ID

  3. Make.com sends a refund request to UAPK Gateway's /execute endpoint

  4. UAPK Gateway checks the manifest policy:

    • Amount (€180) is under the €500 cap ✓
    • Tool (stripe_refund_api) is on allowlist ✓
    • Daily refund budget has €4,200 remaining ✓
    • Counterparty (stripe.com) is approved ✓
    • No approval required (under €200 threshold) ✓

  5. Gateway executes the Stripe API call and logs the transaction

  6. Stripe processes the refund and returns success

  7. Gateway returns success to Make.com with transaction details

  8. Make.com triggers email confirmation through another gateway call

  9. Gateway validates the email action against daily limits (480/500 used)

  10. SendGrid sends the confirmation email

Now consider a €300 refund request. Steps 1-4 proceed identically, but at step 4, the gateway detects the amount exceeds the €200 approval threshold. Instead of executing immediately, it:

  • Creates a pending approval record
  • Returns requires_approval status to Make.com
  • Triggers the manager notification workflow
  • Holds the Stripe API call until approval

A manager receives a Slack notification with refund details and approves through the UAPK Gateway dashboard. Only then does the Stripe API call execute, maintaining human oversight for significant automated decisions as GDPR Article 22 requires.

Throughout this process, the gateway logs every policy check, API call, and approval decision. If a data protection authority requests audit records, you have complete transaction trails showing compliance with both PCI-DSS access controls and GDPR transfer restrictions.

Conclusion​

European e-commerce companies face a complex web of PCI-DSS payment security requirements and GDPR data protection obligations when deploying AI customer service agents. Traditional API management doesn't understand these regulatory contexts or provide the granular controls needed for compliance.

UAPK Gateway bridges this gap by implementing policy controls that understand payment compliance, data transfer restrictions, and automated decision-making requirements. The tool allowlists prevent PAN storage violations, jurisdiction controls enforce GDPR transfer rules, and approval thresholds ensure human oversight where required.

The Make.com integration shows how existing automation workflows can be retrofitted with compliance controls without rebuilding entire systems. By routing external API calls through the gateway, you gain immediate policy enforcement and audit trails that satisfy both technical and regulatory requirements.

You can build your own manifest configuration at docs.uapkgateway.com/manifest-builder or explore more integration examples in our technical documentation.

compliance, GDPR, PCI-DSS, AI automation, Make.com, payment processing, data protection, audit trails