How to Audit OAuth Clients and Validate Scope Assignments in Genesys Cloud

What You Will Build

• You will build a Python script that enumerates every OAuth client within a Genesys Cloud organization.
• You will use the Genesys Cloud REST API v2 to retrieve client details and map assigned OAuth scopes to their definitions.
• You will write Python code using the httpx library to handle authentication, pagination, and error resilience.

Prerequisites

• OAuth Client Type: You must use a Service Account or Application OAuth client. Public clients cannot access organizational administrative data.
• Required Scopes: The client must have the admin:oauthclient:read scope to list clients and view their scope assignments. To resolve scope IDs to human-readable names, you also need admin:oauthscope:read.
• SDK Version: This tutorial uses direct REST API calls via httpx, which is version-agnostic but relies on the current /api/v2 endpoints.
• Language/Runtime: Python 3.8+ is required.
• External Dependencies: pip install httpx pydantic

Authentication Setup

Genesys Cloud uses OAuth 2.0 for all API access. For a service account integration, you will use the Client Credentials Grant flow. This flow exchanges your client ID and client secret for an access token. This token is valid for a limited duration (typically 30 minutes) and must be refreshed before expiration.

The following code establishes a robust authentication helper. It caches the token and handles the refresh logic automatically when the token expires.

import httpx
import time
import logging
from typing import Optional

# Configure logging for debugging
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)

class GenesysAuthManager:
    def __init__(self, client_id: str, client_secret: str, env: str = "mypurecloud.com"):
        self.client_id = client_id
        self.client_secret = client_secret
        self.env = env
        self.base_url = f"https://api.{env}"
        self.token_url = f"{self.base_url}/oauth/token"
        
        self.access_token: Optional[str] = None
        self.token_expiry_time: float = 0
        # Using httpx.Client for synchronous requests for simplicity in this script
        self.http_client = httpx.Client(timeout=30.0)

    def _get_token(self) -> None:
        """
        Requests a new OAuth token from the Genesys Cloud authorization server.
        """
        logger.info("Requesting new OAuth token...")
        
        payload = {
            "grant_type": "client_credentials",
            "client_id": self.client_id,
            "client_secret": self.client_secret
        }

        try:
            response = self.http_client.post(
                self.token_url,
                data=payload,
                headers={"Content-Type": "application/x-www-form-urlencoded"}
            )
            response.raise_for_status()
        except httpx.HTTPStatusError as e:
            logger.error(f"Authentication failed: {e.response.status_code} - {e.response.text}")
            raise
        except httpx.RequestError as e:
            logger.error(f"Network error during authentication: {e}")
            raise

        data = response.json()
        self.access_token = data.get("access_token")
        # Token expires in seconds, convert to absolute timestamp
        expires_in = data.get("expires_in", 1800)
        self.token_expiry_time = time.time() + expires_in - 10 # Subtract 10s buffer

        logger.info("OAuth token acquired successfully.")

    def get_valid_token(self) -> str:
        """
        Returns a valid access token. Refreshes if the current token is expired.
        """
        if not self.access_token or time.time() >= self.token_expiry_time:
            self._get_token()
        return self.access_token

    def close(self):
        """Closes the underlying HTTP connection pool."""
        self.http_client.close()

Implementation

Step 1: Retrieving the List of OAuth Clients

The Genesys Cloud API endpoint for listing OAuth clients is GET /api/v2/oauth/clients. This endpoint supports pagination. To ensure you capture every client in large organizations, you must implement pagination logic using the afterId parameter.

Endpoint: GET /api/v2/oauth/clients
Required Scope: admin:oauthclient:read

The response contains an array of client objects. Each object includes an id, name, type, and a scopes array. The scopes array contains the IDs of the OAuth scopes assigned to that client.

from typing import List, Dict, Any

def fetch_all_oauth_clients(auth_manager: GenesysAuthManager) -> List[Dict[str, Any]]:
    """
    Fetches all OAuth clients from the organization, handling pagination.
    """
    all_clients = []
    after_id = None
    page_size = 250
    url = f"{auth_manager.base_url}/api/v2/oauth/clients"

    while True:
        headers = {
            "Authorization": f"Bearer {auth_manager.get_valid_token()}",
            "Content-Type": "application/json"
        }

        params = {
            "pageSize": page_size
        }
        if after_id:
            params["afterId"] = after_id

        try:
            response = auth_manager.http_client.get(url, headers=headers, params=params)
            response.raise_for_status()
        except httpx.HTTPStatusError as e:
            if e.response.status_code == 401:
                logger.warning("Token expired during fetch, refreshing...")
                auth_manager.get_valid_token()
                continue # Retry the request
            elif e.response.status_code == 403:
                logger.error("403 Forbidden: Ensure the client has 'admin:oauthclient:read' scope.")
                raise
            else:
                logger.error(f"HTTP Error: {e.response.status_code} - {e.response.text}")
                raise

        data = response.json()
        entities = data.get("entities", [])
        
        if not entities:
            break

        all_clients.extend(entities)
        
        # Check if there are more pages
        after_id = data.get("afterId")
        if not after_id:
            break

    logger.info(f"Fetched {len(all_clients)} OAuth clients.")
    return all_clients

Step 2: Resolving Scope IDs to Definitions

The client objects returned in Step 1 only contain scope IDs (e.g., "admin:agent:read"), not the full definition. To perform a meaningful audit, you need to know what each scope actually permits. You must fetch the global list of OAuth scopes using GET /api/v2/oauth/scopes.

Endpoint: GET /api/v2/oauth/scopes
Required Scope: admin:oauthscope:read

This endpoint returns a dictionary-like structure where keys are scope IDs and values are scope objects containing name, description, and category.

def fetch_all_oauth_scopes(auth_manager: GenesysAuthManager) -> Dict[str, Dict[str, Any]]:
    """
    Fetches all available OAuth scopes and returns them as a dictionary keyed by scope ID.
    """
    url = f"{auth_manager.base_url}/api/v2/oauth/scopes"
    headers = {
        "Authorization": f"Bearer {auth_manager.get_valid_token()}",
        "Content-Type": "application/json"
    }

    try:
        response = auth_manager.http_client.get(url, headers=headers)
        response.raise_for_status()
    except httpx.HTTPStatusError as e:
        if e.response.status_code == 403:
            logger.error("403 Forbidden: Ensure the client has 'admin:oauthscope:read' scope.")
            raise
        else:
            raise

    data = response.json()
    # The API returns a flat dictionary of scopes
    scopes_map = data.get("entities", {})
    
    logger.info(f"Fetched {len(scopes_map)} OAuth scope definitions.")
    return scopes_map

Step 3: Auditing and Validating Assignments

Now that you have the list of clients and the map of scope definitions, you can cross-reference them. This step is critical for security audits. You will check for:

1. Orphaned Scopes: Scopes assigned to a client that no longer exist in the system (rare, but possible during migrations).
2. High-Risk Scopes: Identification of clients with administrative scopes like admin:organization:write or admin:oauthclient:write.
3. Unused Clients: Clients that have not been used recently (based on lastUsed timestamp if available, though the basic client list may not always expose detailed usage metrics without additional analytics queries).

We will create a data structure that normalizes this information for reporting.

from dataclasses import dataclass
from typing import List, Dict, Any, Optional
from datetime import datetime

@dataclass
class OAuthClientAuditRecord:
    client_id: str
    client_name: str
    client_type: str
    assigned_scope_ids: List[str]
    resolved_scopes: List[Dict[str, Any]]
    orphaned_scopes: List[str]
    has_admin_write: bool

def audit_clients(
    clients: List[Dict[str, Any]], 
    scopes_map: Dict[str, Dict[str, Any]]
) -> List[OAuthClientAuditRecord]:
    """
    Cross-references clients with scope definitions to create audit records.
    """
    audit_records = []
    
    # Define high-risk scopes for flagging
    high_risk_prefixes = ["admin:", "impersonation:"]

    for client in clients:
        client_id = client.get("id")
        client_name = client.get("name")
        client_type = client.get("type")
        assigned_scope_ids = client.get("scopes", [])
        
        resolved_scopes = []
        orphaned_scopes = []
        has_admin_write = False

        for scope_id in assigned_scope_ids:
            if scope_id in scopes_map:
                scope_def = scopes_map[scope_id]
                resolved_scopes.append({
                    "id": scope_id,
                    "name": scope_def.get("name"),
                    "category": scope_def.get("category")
                })
                
                # Check for high-risk scopes
                if any(scope_id.startswith(prefix) for prefix in high_risk_prefixes):
                    # Specifically check for write/modify/delete capabilities if possible
                    # For this tutorial, we flag any admin scope as potentially high risk
                    has_admin_write = True
            else:
                # Scope ID exists on client but not in global definition
                orphaned_scopes.append(scope_id)

        record = OAuthClientAuditRecord(
            client_id=client_id,
            client_name=client_name,
            client_type=client_type,
            assigned_scope_ids=assigned_scope_ids,
            resolved_scopes=resolved_scopes,
            orphaned_scopes=orphaned_scopes,
            has_admin_write=has_admin_write
        )
        audit_records.append(record)

    return audit_records

Complete Working Example

This is the full, copy-pasteable script. Save this as audit_oauth_clients.py. You will need to set your CLIENT_ID and CLIENT_SECRET in the environment variables or directly in the code (for testing only).

#!/usr/bin/env python3
"""
Genesys Cloud OAuth Client Auditor
Lists all OAuth clients and validates their scope assignments against global definitions.
"""

import httpx
import time
import logging
import json
import os
from typing import List, Dict, Any, Optional
from dataclasses import dataclass

# --- Configuration ---
CLIENT_ID = os.getenv("GENESYS_CLIENT_ID", "YOUR_CLIENT_ID")
CLIENT_SECRET = os.getenv("GENESYS_CLIENT_SECRET", "YOUR_CLIENT_SECRET")
GENESYS_ENV = os.getenv("GENESYS_ENV", "mypurecloud.com")

# --- Logging Setup ---
logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s [%(levelname)s] %(message)s",
    handlers=[logging.StreamHandler()]
)
logger = logging.getLogger(__name__)

# --- Data Models ---
@dataclass
class OAuthClientAuditRecord:
    client_id: str
    client_name: str
    client_type: str
    assigned_scope_ids: List[str]
    resolved_scopes: List[Dict[str, Any]]
    orphaned_scopes: List[str]
    has_admin_write: bool

# --- Authentication Manager ---
class GenesysAuthManager:
    def __init__(self, client_id: str, client_secret: str, env: str = "mypurecloud.com"):
        self.client_id = client_id
        self.client_secret = client_secret
        self.env = env
        self.base_url = f"https://api.{env}"
        self.token_url = f"{self.base_url}/oauth/token"
        
        self.access_token: Optional[str] = None
        self.token_expiry_time: float = 0
        self.http_client = httpx.Client(timeout=30.0)

    def _get_token(self) -> None:
        payload = {
            "grant_type": "client_credentials",
            "client_id": self.client_id,
            "client_secret": self.client_secret
        }
        try:
            response = self.http_client.post(
                self.token_url,
                data=payload,
                headers={"Content-Type": "application/x-www-form-urlencoded"}
            )
            response.raise_for_status()
        except httpx.HTTPStatusError as e:
            logger.error(f"Authentication failed: {e.response.status_code} - {e.response.text}")
            raise
        except httpx.RequestError as e:
            logger.error(f"Network error during authentication: {e}")
            raise

        data = response.json()
        self.access_token = data.get("access_token")
        expires_in = data.get("expires_in", 1800)
        self.token_expiry_time = time.time() + expires_in - 10

    def get_valid_token(self) -> str:
        if not self.access_token or time.time() >= self.token_expiry_time:
            self._get_token()
        return self.access_token

    def close(self):
        self.http_client.close()

# --- API Helpers ---
def fetch_all_oauth_clients(auth_manager: GenesysAuthManager) -> List[Dict[str, Any]]:
    all_clients = []
    after_id = None
    page_size = 250
    url = f"{auth_manager.base_url}/api/v2/oauth/clients"

    while True:
        headers = {
            "Authorization": f"Bearer {auth_manager.get_valid_token()}",
            "Content-Type": "application/json"
        }
        params = {"pageSize": page_size}
        if after_id:
            params["afterId"] = after_id

        try:
            response = auth_manager.http_client.get(url, headers=headers, params=params)
            response.raise_for_status()
        except httpx.HTTPStatusError as e:
            if e.response.status_code == 401:
                logger.warning("Token expired, refreshing...")
                auth_manager.get_valid_token()
                continue
            elif e.response.status_code == 403:
                logger.error("403 Forbidden: Check 'admin:oauthclient:read' scope.")
                raise
            else:
                raise

        data = response.json()
        entities = data.get("entities", [])
        if not entities:
            break
        
        all_clients.extend(entities)
        after_id = data.get("afterId")
        if not after_id:
            break

    return all_clients

def fetch_all_oauth_scopes(auth_manager: GenesysAuthManager) -> Dict[str, Dict[str, Any]]:
    url = f"{auth_manager.base_url}/api/v2/oauth/scopes"
    headers = {
        "Authorization": f"Bearer {auth_manager.get_valid_token()}",
        "Content-Type": "application/json"
    }

    try:
        response = auth_manager.http_client.get(url, headers=headers)
        response.raise_for_status()
    except httpx.HTTPStatusError as e:
        if e.response.status_code == 403:
            logger.error("403 Forbidden: Check 'admin:oauthscope:read' scope.")
            raise
        else:
            raise

    data = response.json()
    return data.get("entities", {})

def audit_clients(
    clients: List[Dict[str, Any]], 
    scopes_map: Dict[str, Dict[str, Any]]
) -> List[OAuthClientAuditRecord]:
    audit_records = []
    high_risk_prefixes = ["admin:", "impersonation:"]

    for client in clients:
        client_id = client.get("id")
        client_name = client.get("name")
        client_type = client.get("type")
        assigned_scope_ids = client.get("scopes", [])
        
        resolved_scopes = []
        orphaned_scopes = []
        has_admin_write = False

        for scope_id in assigned_scope_ids:
            if scope_id in scopes_map:
                scope_def = scopes_map[scope_id]
                resolved_scopes.append({
                    "id": scope_id,
                    "name": scope_def.get("name"),
                    "category": scope_def.get("category")
                })
                if any(scope_id.startswith(prefix) for prefix in high_risk_prefixes):
                    has_admin_write = True
            else:
                orphaned_scopes.append(scope_id)

        audit_records.append(OAuthClientAuditRecord(
            client_id=client_id,
            client_name=client_name,
            client_type=client_type,
            assigned_scope_ids=assigned_scope_ids,
            resolved_scopes=resolved_scopes,
            orphaned_scopes=orphaned_scopes,
            has_admin_write=has_admin_write
        ))
    return audit_records

# --- Main Execution ---
def main():
    if CLIENT_ID == "YOUR_CLIENT_ID" or CLIENT_SECRET == "YOUR_CLIENT_SECRET":
        logger.error("Please set GENESYS_CLIENT_ID and GENESYS_CLIENT_SECRET environment variables.")
        return

    auth_manager = None
    try:
        auth_manager = GenesysAuthManager(CLIENT_ID, CLIENT_SECRET, GENESYS_ENV)
        
        # Step 1: Fetch Clients
        logger.info("Fetching OAuth clients...")
        clients = fetch_all_oauth_clients(auth_manager)
        
        # Step 2: Fetch Scopes
        logger.info("Fetching OAuth scopes...")
        scopes_map = fetch_all_oauth_scopes(auth_manager)
        
        # Step 3: Audit
        logger.info("Auditing client scope assignments...")
        audit_records = audit_clients(clients, scopes_map)
        
        # Output Results
        high_risk_clients = [r for r in audit_records if r.has_admin_write]
        clients_with_orphans = [r for r in audit_records if r.orphaned_scopes]
        
        logger.info(f"Total Clients: {len(audit_records)}")
        logger.info(f"Clients with Admin/High-Risk Scopes: {len(high_risk_clients)}")
        logger.info(f"Clients with Orphaned Scopes: {len(clients_with_orphans)}")

        # Save detailed report to JSON
        report = []
        for record in audit_records:
            report.append({
                "client_id": record.client_id,
                "client_name": record.client_name,
                "client_type": record.client_type,
                "has_admin_write": record.has_admin_write,
                "orphaned_scopes": record.orphaned_scopes,
                "assigned_scopes": record.resolved_scopes
            })
        
        with open("oauth_audit_report.json", "w") as f:
            json.dump(report, f, indent=2)
            
        logger.info("Report saved to oauth_audit_report.json")

    except Exception as e:
        logger.error(f"An error occurred: {e}")
    finally:
        if auth_manager:
            auth_manager.close()

if __name__ == "__main__":
    main()

Common Errors & Debugging

Error: 403 Forbidden

Cause: The OAuth client used for authentication does not have the required scopes.
Fix:

1. Log in to the Genesys Cloud Admin portal.
2. Navigate to Admin > Security > OAuth.
3. Select the client you are using for this script.
4. Ensure the following scopes are checked:
   • admin:oauthclient:read
   • admin:oauthscope:read
5. Save the changes. The token must be refreshed after scope changes.

Error: 401 Unauthorized

Cause: The access token has expired, or the Client ID/Secret is invalid.
Fix:

1. Verify the CLIENT_ID and CLIENT_SECRET are correct.
2. Ensure your GenesysAuthManager is correctly refreshing the token. The provided code handles automatic refresh, but if you are debugging manually, delete the cached token or restart the script.
3. Check that the client is not disabled in the Genesys Cloud admin console.

Error: Orphaned Scopes Detected

Cause: The audit script finds scope IDs on a client that do not exist in the global scope definition list.
Fix:

1. This is rare and usually indicates a data inconsistency or a custom scope that was deleted.
2. Review the orphaned_scopes list in the audit record.
3. If the scope is no longer needed, you can remove it from the client using the PUT /api/v2/oauth/clients/{id} endpoint.
4. If the scope is required, ensure it exists globally. If it is a custom scope, verify it was not accidentally deleted.

Error: Rate Limiting (429 Too Many Requests)

Cause: You are making too many requests in a short period.
Fix:

1. The fetch_all_oauth_clients function uses pagination with a page size of 250. This is efficient.
2. If you still hit 429s, implement exponential backoff.
3. Check the Retry-After header in the 429 response.

# Example of adding simple retry logic for 429s
import time

def get_with_retry(client, url, headers, params=None, max_retries=3):
    for attempt in range(max_retries):
        response = client.get(url, headers=headers, params=params)
        if response.status_code == 429:
            retry_after = int(response.headers.get("Retry-After", 5))
            logger.warning(f"Rate limited. Waiting {retry_after}s...")
            time.sleep(retry_after)
            continue
        return response
    raise Exception("Max retries exceeded for 429")

Official References

• Genesys Cloud OAuth Clients API Documentation
• Genesys Cloud OAuth Scopes API Documentation
• Genesys Cloud Authentication Guide