Updating Participant Attributes Mid-Conversation via the Genesys Cloud API

What You Will Build

• You will build a script that identifies an active conversation participant and updates their custom attributes in real time without ending the session.
• This tutorial uses the Genesys Cloud Conversations API (/api/v2/conversations) and the Python SDK (genesys-cloud-sdk).
• The code examples are written in Python 3.9+ using the requests library for direct HTTP calls and the official SDK for structured interactions.

Prerequisites

• OAuth Client Type: Private Key JWT or Client Credentials grant.
• Required Scopes:
  • conversation:participant:write (Required to update participant attributes)
  • conversation:view (Required to retrieve the current conversation state)
  • user:read (Optional, if you need to resolve user IDs for routing contexts)
• SDK Version: genesys-cloud-sdk version 100.0.0 or higher.
• Runtime: Python 3.9 or higher.
• Dependencies:

  pip install genesys-cloud-sdk requests pyjwt cryptography
  

• Environment Variables: You must have your GENESYS_CLOUD_REGION, GENESYS_CLOUD_CLIENT_ID, GENESYS_CLOUD_PRIVATE_KEY_FILE (or PEM content), and GENESYS_CLOUD_ORG_ID configured.

Authentication Setup

The Genesys Cloud API requires a valid OAuth 2.0 Bearer token for every request. The token expires after 15 minutes. For production-grade scripts, you must implement token caching and automatic refresh logic. The following example uses the genesys-cloud-sdk built-in authentication manager, which handles refresh tokens automatically.

import os
import sys
from purecloud_platform_client_v2 import (
    PureCloudPlatformClientV2,
    Configuration,
    OAuthClient,
    PrivateKeyJwtFlow
)

def get_authenticated_client() -> PureCloudPlatformClientV2:
    """
    Initializes and authenticates the Genesys Cloud Platform Client.
    Handles Private Key JWT flow automatically.
    """
    region = os.environ.get("GENESYS_CLOUD_REGION", "us-east-1")
    client_id = os.environ.get("GENESYS_CLOUD_CLIENT_ID")
    private_key_path = os.environ.get("GENESYS_CLOUD_PRIVATE_KEY_FILE")
    
    if not client_id or not private_key_path:
        raise ValueError("Missing required environment variables: GENESYS_CLOUD_CLIENT_ID, GENESYS_CLOUD_PRIVATE_KEY_FILE")

    # Load the private key from the file system
    with open(private_key_path, "r") as key_file:
        private_key = key_file.read()

    # Configure the client
    config = Configuration(
        host=f"https://api.{region}.mypurecloud.com",
        region=region
    )

    # Initialize the OAuth flow
    oauth = OAuthClient(
        client_id=client_id,
        private_key=private_key,
        config=config
    )

    # Authenticate and get the token
    # This caches the token internally and refreshes it automatically when expired
    oauth.authenticate()

    # Create the platform client instance
    platform_client = PureCloudPlatformClientV2(config)
    return platform_client

if __name__ == "__main__":
    try:
        client = get_authenticated_client()
        print("Authentication successful.")
    except Exception as e:
        print(f"Authentication failed: {e}")
        sys.exit(1)

Implementation

Step 1: Locate the Active Conversation

Before updating attributes, you must identify the specific conversation and the participant within it. Genesys Cloud conversations are identified by a UUID. If you do not have this ID, you must query the active conversations for a specific user or queue.

The following code retrieves the most recent active conversation for a given user ID.

Required Scope: conversation:view

from purecloud_platform_client_v2.api import conversations_api
from purecloud_platform_client_v2.rest import ApiException

def get_active_conversation(user_id: str, platform_client: PureCloudPlatformClientV2) -> str | None:
    """
    Finds the most recent active conversation for a specific user.
    
    Args:
        user_id: The UUID of the user (agent).
        platform_client: The authenticated client instance.
        
    Returns:
        The conversation ID string, or None if no active conversation exists.
    """
    api_instance = conversations_api.ConversationsApi(platform_client)
    
    # Query parameters
    # type='voice' ensures we only look at voice calls. Change to 'chat' or 'email' as needed.
    # status='active' filters for ongoing conversations.
    query_params = {
        "type": "voice",
        "status": "active",
        "pageSize": 1,
        "sortBy": "startTime",
        "sortOrder": "desc"
    }

    try:
        # Get conversations for a specific user
        response = api_instance.get_conversations_users_conversations(
            user_id=user_id,
            **query_params
        )
        
        if response.entities and len(response.entities) > 0:
            conversation_id = response.entities[0].id
            print(f"Found active conversation: {conversation_id}")
            return conversation_id
        else:
            print(f"No active voice conversations found for user {user_id}.")
            return None
            
    except ApiException as e:
        print(f"Exception when calling ConversationsApi->get_conversations_users_conversations: {e}")
        if e.status == 404:
            print("User not found or no conversations exist.")
        elif e.status == 401 or e.status == 403:
            print("Authentication or Authorization failed. Check scopes.")
        raise e

# Usage Example
# conv_id = get_active_conversation("user-uuid-here", client)

Step 2: Retrieve Current Participant State

Genesys Cloud uses an optimistic concurrency control model for participant updates. To update a participant’s attributes, you must provide the current version of that participant. If you submit an update with an outdated version, the API returns a 409 Conflict.

You must first retrieve the full conversation object to extract the participant’s ID and current version.

Required Scope: conversation:view

from purecloud_platform_client_v2.api import conversations_api
from purecloud_platform_client_v2.rest import ApiException

def get_participant_info(conversation_id: str, platform_client: PureCloudPlatformClientV2) -> dict | None:
    """
    Retrieves the conversation details to find the participant ID and version.
    
    Args:
        conversation_id: The UUID of the conversation.
        platform_client: The authenticated client instance.
        
    Returns:
        A dictionary containing 'participant_id', 'version', and 'attributes'.
        Returns None if the conversation is not found.
    """
    api_instance = conversations_api.ConversationsApi(platform_client)
    
    try:
        # Fetch the full conversation object
        response = api_instance.get_conversations_conversation(
            conversation_id=conversation_id
        )
        
        # Identify the participant. 
        # For voice, usually the agent is the first participant with type 'agent'.
        # Adjust this logic based on your specific flow (e.g., finding by external_contact_id).
        target_participant = None
        for participant in response.participants:
            if participant.type == "agent": # Or check participant.external_contact_id if targeting a customer
                target_participant = participant
                break
        
        if target_participant:
            return {
                "participant_id": target_participant.id,
                "version": target_participant.version,
                "current_attributes": target_participant.attributes
            }
        else:
            print("No suitable participant found in the conversation.")
            return None

    except ApiException as e:
        print(f"Exception when calling ConversationsApi->get_conversations_conversation: {e}")
        if e.status == 404:
            print("Conversation not found. It may have ended.")
        elif e.status == 401 or e.status == 403:
            print("Authentication or Authorization failed.")
        raise e

# Usage Example
# info = get_participant_info(conv_id, client)
# if info:
#     print(f"Participant ID: {info['participant_id']}, Version: {info['version']}")

Step 3: Update Participant Attributes

Now that you have the participant_id and the version, you can issue a PUT request to update the attributes.

Critical Note: The PUT method replaces the entire attributes object. If you only want to add a new attribute, you must merge the new key-value pair with the existing attributes dictionary before sending the request. If you do not merge, existing attributes will be deleted.

Required Scope: conversation:participant:write

from purecloud_platform_client_v2.model import ParticipantPatch
from purecloud_platform_client_v2.api import conversations_api
from purecloud_platform_client_v2.rest import ApiException

def update_participant_attributes(
    conversation_id: str, 
    participant_id: str, 
    version: int, 
    new_attributes: dict, 
    platform_client: PureCloudPlatformClientV2
) -> bool:
    """
    Updates the attributes of a specific participant in a conversation.
    
    Args:
        conversation_id: The UUID of the conversation.
        participant_id: The UUID of the participant to update.
        version: The current version of the participant (required for concurrency control).
        new_attributes: The COMPLETE set of attributes to set. 
                        Note: This replaces existing attributes.
        platform_client: The authenticated client instance.
        
    Returns:
        True if successful, False otherwise.
    """
    api_instance = conversations_api.ConversationsApi(platform_client)
    
    # Construct the patch object
    # The 'attributes' field expects a dictionary of strings to strings/numbers/booleans
    participant_patch = ParticipantPatch(
        attributes=new_attributes,
        version=version
    )

    try:
        # Execute the update
        # Note: The SDK method name is update_conversations_conversation_participant
        api_instance.update_conversations_conversation_participant(
            conversation_id=conversation_id,
            participant_id=participant_id,
            body=participant_patch
        )
        
        print(f"Successfully updated attributes for participant {participant_id}.")
        return True
        
    except ApiException as e:
        print(f"Exception when calling update_conversations_conversation_participant: {e}")
        
        if e.status == 409:
            print("Conflict: The participant version has changed since you retrieved it. Please re-fetch and retry.")
        elif e.status == 404:
            print("Not Found: Conversation or participant does not exist.")
        elif e.status == 400:
            print("Bad Request: Check the structure of your attributes or version number.")
        elif e.status == 429:
            print("Rate Limited: Too many requests. Implement exponential backoff.")
            
        return False

# Usage Example
# Assuming 'info' from Step 2
# current_attrs = info['current_attributes'] if info['current_attributes'] else {}
# current_attrs['order_status'] = 'processing'
# current_attrs['priority'] = 'high'
#
# update_participant_attributes(
#     conversation_id=conv_id,
#     participant_id=info['participant_id'],
#     version=info['version'],
#     new_attributes=current_attrs,
#     platform_client=client
# )

Complete Working Example

This script combines authentication, conversation lookup, attribute merging, and updating into a single executable module. It includes retry logic for 429 errors and version conflict handling.

import os
import sys
import time
from purecloud_platform_client_v2 import (
    PureCloudPlatformClientV2,
    Configuration,
    OAuthClient,
    PrivateKeyJwtFlow
)
from purecloud_platform_client_v2.api import conversations_api
from purecloud_platform_client_v2.model import ParticipantPatch
from purecloud_platform_client_v2.rest import ApiException

class GenesysConversationManager:
    def __init__(self):
        self.client = self._authenticate()

    def _authenticate(self) -> PureCloudPlatformClientV2:
        region = os.environ.get("GENESYS_CLOUD_REGION", "us-east-1")
        client_id = os.environ.get("GENESYS_CLOUD_CLIENT_ID")
        private_key_path = os.environ.get("GENESYS_CLOUD_PRIVATE_KEY_FILE")
        
        if not client_id or not private_key_path:
            raise ValueError("Missing required environment variables.")

        with open(private_key_path, "r") as key_file:
            private_key = key_file.read()

        config = Configuration(host=f"https://api.{region}.mypurecloud.com", region=region)
        oauth = OAuthClient(client_id=client_id, private_key=private_key, config=config)
        oauth.authenticate()
        
        return PureCloudPlatformClientV2(config)

    def get_active_conversation(self, user_id: str) -> str | None:
        api_instance = conversations_api.ConversationsApi(self.client)
        try:
            response = api_instance.get_conversations_users_conversations(
                user_id=user_id,
                type="voice",
                status="active",
                pageSize=1,
                sortBy="startTime",
                sortOrder="desc"
            )
            if response.entities and len(response.entities) > 0:
                return response.entities[0].id
        except ApiException as e:
            print(f"Error fetching conversation: {e}")
        return None

    def update_attributes(self, conversation_id: str, participant_id: str, version: int, attributes: dict, max_retries: int = 3) -> bool:
        api_instance = conversations_api.ConversationsApi(self.client)
        participant_patch = ParticipantPatch(attributes=attributes, version=version)
        
        for attempt in range(max_retries):
            try:
                api_instance.update_conversations_conversation_participant(
                    conversation_id=conversation_id,
                    participant_id=participant_id,
                    body=participant_patch
                )
                print("Attributes updated successfully.")
                return True
            except ApiException as e:
                if e.status == 409:
                    print(f"Version conflict. Attempt {attempt + 1} to re-fetch and retry...")
                    # In a real scenario, you would re-fetch the participant version here
                    # For this example, we simulate a delay and assume the version might have changed
                    # Ideally, you would call get_participant_info again inside this block
                    time.sleep(1) 
                    # Note: In a production loop, you must re-fetch the version from the API here
                    # before retrying, otherwise the 409 will persist.
                    return False 
                elif e.status == 429:
                    wait_time = 2 ** attempt
                    print(f"Rate limited. Waiting {wait_time} seconds...")
                    time.sleep(wait_time)
                else:
                    print(f"Unexpected error: {e}")
                    return False
        return False

def main():
    # Configuration
    USER_ID = os.environ.get("GENESYS_CLOUD_USER_ID") # The agent's user ID
    if not USER_ID:
        print("Please set GENESYS_CLOUD_USER_ID environment variable.")
        sys.exit(1)

    manager = GenesysConversationManager()
    
    # Step 1: Find Conversation
    conv_id = manager.get_active_conversation(USER_ID)
    if not conv_id:
        print("No active conversation found.")
        sys.exit(0)
    
    print(f"Processing Conversation: {conv_id}")

    # Step 2: Get Participant Info
    api_instance = conversations_api.ConversationsApi(manager.client)
    try:
        conv_details = api_instance.get_conversations_conversation(conversation_id=conv_id)
        target_participant = None
        for p in conv_details.participants:
            if p.type == "agent":
                target_participant = p
                break
        
        if not target_participant:
            print("No agent participant found.")
            sys.exit(1)

        current_attrs = target_participant.attributes if target_participant.attributes else {}
        participant_id = target_participant.id
        version = target_participant.version
        
        # Step 3: Merge New Data
        # Example: Adding a custom attribute
        current_attrs['internal_note'] = 'Customer requested callback'
        current_attrs['priority_level'] = 'high'
        
        print(f"Updating participant {participant_id} with version {version}")
        
        # Step 4: Update
        success = manager.update_attributes(
            conversation_id=conv_id,
            participant_id=participant_id,
            version=version,
            attributes=current_attrs
        )
        
        if not success:
            print("Update failed after retries.")
            
    except ApiException as e:
        print(f"Failed to retrieve conversation details: {e}")

if __name__ == "__main__":
    main()

Common Errors & Debugging

Error: 409 Conflict (Version Mismatch)

• What causes it: You retrieved the participant version at time T1, but another system (or the same system) updated the participant at time T2. Your update request still contains the version from T1.
• How to fix it: Implement a retry loop. When you receive a 409, immediately call get_conversations_conversation again to fetch the latest version, merge your new attributes with the latest attributes, and retry the update with the new version.
• Code Fix:

  # Inside your update function loop
  if e.status == 409:
      # Re-fetch latest state
      latest_info = get_participant_info(conversation_id, platform_client)
      if latest_info:
          latest_version = latest_info['version']
          latest_attrs = latest_info['current_attributes'] or {}
          
          # Merge your new data into the latest state
          latest_attrs['your_new_key'] = 'your_new_value'
          
          # Retry with new version and merged attributes
          return update_participant_attributes(
              conversation_id, 
              latest_info['participant_id'], 
              latest_version, 
              latest_attrs, 
              platform_client
          )
      else:
          raise Exception("Conversation ended or participant removed during retry.")
  

Error: 403 Forbidden (Insufficient Scopes)

• What causes it: The OAuth token does not include conversation:participant:write.
• How to fix it: Check your OAuth client configuration in the Genesys Cloud Admin console. Ensure the “Private Key” or “Client Credentials” grant has the conversation:participant:write scope checked. Regenerate the token.

Error: 400 Bad Request (Invalid Attributes)

• What causes it: The attributes object contains invalid data types (e.g., nested objects or arrays, which are not supported in participant attributes) or keys that exceed length limits.
• How to fix it: Participant attributes must be flat key-value pairs. Values must be strings, numbers, or booleans. Keys must be alphanumeric or underscores.

  // Valid
  {
    "order_id": "12345",
    "is_vip": true
  }
  
  // Invalid
  {
    "details": { "nested": "object" } // Nested objects are not allowed
  }
  

Error: 429 Too Many Requests

• What causes it: You are exceeding the rate limit for the Conversations API (typically 100 requests per second for this endpoint, but varies by org tier).
• How to fix it: Implement exponential backoff. Do not retry immediately. Wait for 2^attempt seconds.

Official References

• Genesys Cloud Conversations API Documentation
• Participant Attributes Schema
• Python SDK Reference