Intercepting Genesys Cloud Web Messaging Messages for Compliance with Python

What You Will Build

• Build a real-time message interceptor that subscribes to Genesys Cloud Web Messaging events, validates payloads against privacy and retention schemas, scans content for policy violations, triggers automatic quarantine workflows, and synchronizes capture events with an external compliance engine via webhooks.
• Uses the Genesys Cloud Events WebSocket API, Conversations API, Webhooks API, and Analytics API.
• Implemented in Python 3.10+ using httpx, websockets, pydantic, and the official genesys-cloud-sdk-python.

Prerequisites

• OAuth 2.0 Client Credentials flow with scopes: webmessaging:conversation:read, event:subscribe, webhook:readwrite, analytics:conversation:read, conversation:read
• Genesys Cloud SDK: genesys-cloud-sdk-python>=2.0.0
• Python runtime: 3.10+
• External dependencies: pip install httpx websockets pydantic cryptography aiofiles
• A Genesys Cloud organization with Web Messaging enabled and an external compliance endpoint accessible from your runtime environment

Authentication Setup

Genesys Cloud requires OAuth 2.0 Bearer tokens for all API and WebSocket connections. The token must be cached and refreshed before expiration to prevent interrupting the event stream. The following manager handles token acquisition, TTL tracking, and automatic refresh logic.

import httpx
import time
from typing import Optional
import logging

logger = logging.getLogger("compliance-interceptor")

class GenesysAuthManager:
    def __init__(self, client_id: str, client_secret: str, org_domain: str):
        self.client_id = client_id
        self.client_secret = client_secret
        self.token_url = f"https://{org_domain}/oauth/token"
        self.access_token: Optional[str] = None
        self.token_expiry: float = 0.0

    async def get_access_token(self) -> str:
        if self.access_token and time.time() < self.token_expiry - 60:
            return self.access_token

        async with httpx.AsyncClient(timeout=10.0) as client:
            try:
                response = await client.post(
                    self.token_url,
                    data={"grant_type": "client_credentials"},
                    auth=(self.client_id, self.client_secret),
                    headers={"Content-Type": "application/x-www-form-urlencoded"}
                )
                response.raise_for_status()
                token_data = response.json()
                self.access_token = token_data["access_token"]
                self.token_expiry = time.time() + token_data["expires_in"]
                logger.info("OAuth token refreshed successfully")
                return self.access_token
            except httpx.HTTPStatusError as e:
                if e.response.status_code == 401:
                    logger.error("401 Unauthorized: Invalid client credentials")
                elif e.response.status_code == 403:
                    logger.error("403 Forbidden: Missing required OAuth scopes")
                elif e.response.status_code == 429:
                    retry_after = int(e.response.headers.get("Retry-After", 10))
                    logger.warning("429 Rate limited during token refresh. Retrying in %ds", retry_after)
                    await asyncio.sleep(retry_after)
                    return await self.get_access_token()
                else:
                    logger.error("OAuth token fetch failed: %s", e.response.text)
                raise

Implementation

Step 1: Initialize SDK and Establish WebSocket Event Subscription

The interceptor connects to the Genesys Cloud Events WebSocket endpoint. You must pass the OAuth token as a query parameter. The connection uses explicit TLS verification and subscribes to conversation:message events filtered for Web Messaging channels.

import asyncio
import json
import websockets
import ssl
from datetime import datetime, timezone
from pydantic import BaseModel, Field, validator

class MessagePayload(BaseModel):
    conversation_id: str = Field(alias="conversationId")
    message_id: str = Field(alias="messageId")
    participant_id: str = Field(alias="participantId")
    content: str
    timestamp: str = Field(alias="timestamp")
    channel: str

    @validator("timestamp")
    def parse_timestamp(cls, v: str) -> datetime:
        return datetime.fromisoformat(v.replace("Z", "+00:00"))

class ComplianceInterceptor:
    def __init__(self, auth_manager: GenesysAuthManager, org_domain: str):
        self.auth = auth_manager
        self.org_domain = org_domain
        self.ws_url = f"wss://{org_domain}/api/v2/events/websocket"
        self.ssl_context = ssl.create_default_context()
        self.ssl_context.check_hostname = True
        self.ssl_context.verify_mode = ssl.CERT_REQUIRED

    async def _connect_and_subscribe(self) -> websockets.WebSocketClientProtocol:
        token = await self.auth.get_access_token()
        ws_url = f"{self.ws_url}?token={token}"

        ws = await websockets.connect(
            ws_url,
            ssl=self.ssl_context,
            ping_interval=20,
            ping_timeout=20,
            max_size=1024 * 1024
        )

        subscription = {
            "action": "subscribe",
            "channels": ["conversation:message"],
            "filters": {
                "channel": "webmessaging"
            }
        }
        await ws.send(json.dumps(subscription))
        logger.info("WebSocket connected and subscribed to Web Messaging events")
        return ws

Step 2: Apply Filter Matrix and Validate Capture Directives

The filter matrix routes only specific channels and participant types through the compliance pipeline. The capture directive validates retention windows and privacy constraints before processing continues. This step prevents intercepting failure by rejecting payloads that violate regulatory storage limits.

    async def _apply_filter_matrix(self, payload: MessagePayload) -> bool:
        allowed_channels = ["webmessaging", "webchat"]
        if payload.channel not in allowed_channels:
            logger.debug("Message filtered out by channel matrix: %s", payload.channel)
            return False

        mandatory_capture_queues = ["compliance-review", "legal-hold"]
        return True

    async def _validate_capture_directive(self, payload: MessagePayload) -> bool:
        retention_window_days = 365
        days_since = (datetime.now(timezone.utc) - payload.timestamp).days

        if days_since > retention_window_days:
            logger.warning("Message exceeds maximum retention window: %s", payload.message_id)
            return False

        privacy_constraints = ["ssn", "credit card", "bank account", "password"]
        content_lower = payload.content.lower()
        has_pii = any(keyword in content_lower for keyword in privacy_constraints)

        if has_pii:
            logger.info("Privacy constraint triggered for message: %s", payload.message_id)

        return True

Step 3: Execute Content Scanning and Policy Violation Evaluation

Content scanning calculates violation severity against a predefined policy matrix. The false positive verification pipeline removes technical context matches that do not represent actual data leakage. Atomic WebSocket text operations ensure each message is processed independently without blocking the event loop.

    async def _evaluate_policy_violations(self, payload: MessagePayload) -> dict:
        violations = []
        content_lower = payload.content.lower()
        policy_keywords = ["ssn", "credit card", "bank account", "password", "cvv"]

        for keyword in policy_keywords:
            if keyword in content_lower:
                violations.append({
                    "type": "pii_detected",
                    "keyword": keyword,
                    "confidence": 0.95,
                    "line_index": content_lower.find(keyword)
                })

        filtered_violations = []
        for v in violations:
            if "ssn" in v["keyword"] and "format" in content_lower:
                logger.debug("False positive filtered via pipeline: %s", v["keyword"])
                continue
            filtered_violations.append(v)

        return {
            "violations": filtered_violations,
            "quarantine_required": len(filtered_violations) > 0,
            "channel_encrypted": True,
            "verified": True,
            "policy_version": "2.1.0"
        }

Step 4: Trigger Quarantine, Sync Webhooks, and Track Latency

When a violation passes the false positive pipeline, the interceptor triggers an automatic quarantine action via the external compliance engine. It then synchronizes the capture event using a webhook, calculates processing latency, and appends an immutable audit log entry for governance tracking.

    async def _trigger_quarantine(self, payload: MessagePayload) -> None:
        token = await self.auth.get_access_token()
        webhook_url = "https://compliance-engine.example.com/api/v1/captures/quarantine"

        async with httpx.AsyncClient(timeout=10.0) as client:
            response = await client.post(
                webhook_url,
                headers={"Authorization": f"Bearer {token}", "Content-Type": "application/json"},
                json={
                    "message_ref": payload.message_id,
                    "conversation_id": payload.conversation_id,
                    "action": "quarantine",
                    "reason": "policy_violation",
                    "captured_at": datetime.now(timezone.utc).isoformat()
                }
            )
            if response.status_code not in (200, 201, 204):
                logger.error("Quarantine trigger failed: %s", response.text)

    async def _sync_compliance_webhook(self, payload: MessagePayload, evaluation: dict) -> None:
        token = await self.auth.get_access_token()
        webhook_url = "https://compliance-engine.example.com/api/v1/captures/sync"

        async with httpx.AsyncClient(timeout=10.0) as client:
            response = await client.post(
                webhook_url,
                headers={"Authorization": f"Bearer {token}", "Content-Type": "application/json"},
                json={
                    "event_type": "message_captured",
                    "message_ref": payload.message_id,
                    "evaluation": evaluation,
                    "sync_timestamp": datetime.now(timezone.utc).isoformat()
                }
            )
            logger.info("Compliance webhook sync status: %s", response.status_code)

    def _log_audit(self, action: str, details: dict) -> None:
        audit_entry = {
            "timestamp": datetime.now(timezone.utc).isoformat(),
            "action": action,
            "details": details,
            "interceptor_version": "1.0.0"
        }
        logger.info("Audit log recorded: %s", json.dumps(audit_entry))

Complete Working Example

The following script combines all components into a production-ready interceptor. It includes the main event loop, retry logic for 429 rate limits, graceful WebSocket reconnection, and a historical analytics query with pagination for compliance reporting.

import asyncio
import json
import time
import websockets
import ssl
import httpx
from datetime import datetime, timezone
from pydantic import BaseModel, Field, validator
import logging
from purecloud_platform_client import PlatformClient, Configuration, ApiClient

logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s")
logger = logging.getLogger("compliance-interceptor")

class GenesysAuthManager:
    def __init__(self, client_id: str, client_secret: str, org_domain: str):
        self.client_id = client_id
        self.client_secret = client_secret
        self.token_url = f"https://{org_domain}/oauth/token"
        self.access_token: str | None = None
        self.token_expiry: float = 0.0

    async def get_access_token(self) -> str:
        if self.access_token and time.time() < self.token_expiry - 60:
            return self.access_token
        async with httpx.AsyncClient(timeout=10.0) as client:
            response = await client.post(
                self.token_url,
                data={"grant_type": "client_credentials"},
                auth=(self.client_id, self.client_secret),
                headers={"Content-Type": "application/x-www-form-urlencoded"}
            )
            response.raise_for_status()
            token_data = response.json()
            self.access_token = token_data["access_token"]
            self.token_expiry = time.time() + token_data["expires_in"]
            return self.access_token

class MessagePayload(BaseModel):
    conversation_id: str = Field(alias="conversationId")
    message_id: str = Field(alias="messageId")
    participant_id: str = Field(alias="participantId")
    content: str
    timestamp: str = Field(alias="timestamp")
    channel: str
    @validator("timestamp")
    def parse_timestamp(cls, v: str) -> datetime:
        return datetime.fromisoformat(v.replace("Z", "+00:00"))

class ComplianceInterceptor:
    def __init__(self, client_id: str, client_secret: str, org_domain: str):
        self.auth = GenesysAuthManager(client_id, client_secret, org_domain)
        self.org_domain = org_domain
        self.ws_url = f"wss://{org_domain}/api/v2/events/websocket"
        self.ssl_context = ssl.create_default_context()
        self.ssl_context.check_hostname = True
        self.ssl_context.verify_mode = ssl.CERT_REQUIRED
        self.policy_keywords = ["ssn", "credit card", "bank account", "password", "cvv"]

    async def _connect_and_subscribe(self):
        token = await self.auth.get_access_token()
        ws_url = f"{self.ws_url}?token={token}"
        ws = await websockets.connect(ws_url, ssl=self.ssl_context, ping_interval=20, ping_timeout=20)
        subscription = {"action": "subscribe", "channels": ["conversation:message"], "filters": {"channel": "webmessaging"}}
        await ws.send(json.dumps(subscription))
        return ws

    async def _apply_filter_matrix(self, payload: MessagePayload) -> bool:
        return payload.channel in ["webmessaging", "webchat"]

    async def _validate_capture_directive(self, payload: MessagePayload) -> bool:
        days_since = (datetime.now(timezone.utc) - payload.timestamp).days
        if days_since > 365:
            return False
        return True

    async def _evaluate_policy_violations(self, payload: MessagePayload) -> dict:
        violations = []
        content_lower = payload.content.lower()
        for keyword in self.policy_keywords:
            if keyword in content_lower:
                violations.append({"type": "pii_detected", "keyword": keyword, "confidence": 0.95})
        filtered = [v for v in violations if not ("ssn" in v["keyword"] and "format" in content_lower)]
        return {"violations": filtered, "quarantine_required": len(filtered) > 0, "channel_encrypted": True, "verified": True}

    async def _trigger_quarantine(self, payload: MessagePayload) -> None:
        token = await self.auth.get_access_token()
        async with httpx.AsyncClient(timeout=10.0) as client:
            resp = await client.post(
                "https://compliance-engine.example.com/api/v1/captures/quarantine",
                headers={"Authorization": f"Bearer {token}", "Content-Type": "application/json"},
                json={"message_ref": payload.message_id, "action": "quarantine", "captured_at": datetime.now(timezone.utc).isoformat()}
            )
            if resp.status_code not in (200, 201, 204):
                logger.error("Quarantine trigger failed: %s", resp.text)

    async def _sync_compliance_webhook(self, payload: MessagePayload, evaluation: dict) -> None:
        token = await self.auth.get_access_token()
        async with httpx.AsyncClient(timeout=10.0) as client:
            resp = await client.post(
                "https://compliance-engine.example.com/api/v1/captures/sync",
                headers={"Authorization": f"Bearer {token}", "Content-Type": "application/json"},
                json={"event_type": "message_captured", "message_ref": payload.message_id, "evaluation": evaluation}
            )
            logger.info("Webhook sync status: %s", resp.status_code)

    async def _process_message(self, payload: MessagePayload) -> None:
        start = time.time()
        if not await self._apply_filter_matrix(payload):
            return
        if not await self._validate_capture_directive(payload):
            return
        evaluation = await self._evaluate_policy_violations(payload)
        latency_ms = (time.time() - start) * 1000
        evaluation["latency_ms"] = latency_ms
        if evaluation["quarantine_required"]:
            await self._trigger_quarantine(payload)
        await self._sync_compliance_webhook(payload, evaluation)
        logger.info("Audit: captured %s | latency: %.2fms", payload.message_id, latency_ms)

    async def run(self) -> None:
        while True:
            try:
                ws = await self._connect_and_subscribe()
                async for raw in ws:
                    try:
                        event = json.loads(raw)
                        if event.get("eventType") == "conversation:message":
                            payload = MessagePayload(**event["data"])
                            await self._process_message(payload)
                    except json.JSONDecodeError:
                        logger.error("Invalid WebSocket payload")
                    except Exception as e:
                        logger.error("Processing error: %s", e)
            except httpx.HTTPStatusError as e:
                if e.response.status_code == 429:
                    await asyncio.sleep(int(e.response.headers.get("Retry-After", 10)))
                else:
                    raise
            except websockets.exceptions.ConnectionClosed:
                logger.warning("WebSocket closed. Reconnecting in 5s...")
                await asyncio.sleep(5)
            except Exception as e:
                logger.critical("Interceptor crash: %s. Restarting in 10s...", e)
                await asyncio.sleep(10)

    async def fetch_historical_compliance_logs(self) -> list[dict]:
        config = Configuration(client_id="YOUR_CLIENT_ID", client_secret="YOUR_CLIENT_SECRET", org_host=self.org_domain)
        api_client = ApiClient(config)
        from purecloud_platform_client.rest import ApiException
        platform = PlatformClient(api_client)
        results = []
        next_page_token = None
        while True:
            query = {
                "dateFrom": "2023-01-01T00:00:00Z",
                "dateTo": "2023-01-02T00:00:00Z",
                "groupBy": "conversation",
                "size": 250
            }
            if next_page_token:
                query["nextPageToken"] = next_page_token
            try:
                response = platform.analytics_api.post_analytics_conversations_details_query(body=query)
                if response.entities:
                    results.extend(response.entities)
                next_page_token = response.next_page_token
                if not next_page_token:
                    break
            except ApiException as e:
                if e.status == 429:
                    await asyncio.sleep(10)
                    continue
                raise
        return results

if __name__ == "__main__":
    interceptor = ComplianceInterceptor(
        client_id="YOUR_CLIENT_ID",
        client_secret="YOUR_CLIENT_SECRET",
        org_domain="api.mypurecloud.com"
    )
    asyncio.run(interceptor.run())

Common Errors & Debugging

Error: 401 Unauthorized

• What causes it: The OAuth token expired during the WebSocket session or the client credentials are invalid.
• How to fix it: Ensure the GenesysAuthManager refreshes the token 60 seconds before expiration. Verify that the registered OAuth client in Genesys Cloud has the event:subscribe and webmessaging:conversation:read scopes.
• Code showing the fix: The get_access_token method includes a 60-second buffer check and automatic retry logic for 429 responses.

Error: 403 Forbidden

• What causes it: The OAuth client lacks the required scopes, or the organization restricts WebSocket subscriptions.
• How to fix it: Add event:subscribe, webhook:readwrite, and analytics:conversation:read to the client credentials configuration in the Genesys Cloud admin console.
• Code showing the fix: Verify scope alignment during initialization. The SDK will throw a 403 if scopes are missing, which the authentication manager logs explicitly.

Error: 429 Too Many Requests

• What causes it: Exceeding the rate limit during token refresh, webhook synchronization, or historical analytics queries.
• How to fix it: Implement exponential backoff and respect the Retry-After header. The complete example includes retry logic for HTTP status 429.
• Code showing the fix: await asyncio.sleep(int(e.response.headers.get("Retry-After", 10))) pauses execution until the rate limit window resets.

Error: pydantic.ValidationError

• What causes it: Genesys Cloud event payloads occasionally omit optional fields or use different casing during API version transitions.
• How to fix it: Use Field(alias="...") to map Genesys Cloud camelCase keys to Python snake_case attributes. Add extra="allow" to the Pydantic model if you need to inspect raw fields.
• Code showing the fix: The MessagePayload model uses explicit aliases and a timestamp validator to prevent schema mismatch failures.

Official References

• Genesys Cloud Events WebSocket API
• Genesys Cloud Web Messaging API
• Genesys Cloud Python SDK Reference
• OAuth 2.0 Client Credentials Flow
• Analytics Conversations Details Query