---
title: "Add a new participant to the conversation"
method: POST
path: "/v1/Conversations/{ConversationSid}/Participants"
tags: ["ConversationsV1Participant"]
---

# Add a new participant to the conversation

`POST /v1/Conversations/{ConversationSid}/Participants`

Add a new participant to the conversation

## Path parameters

- `ConversationSid` string, required

## Headers

- `X-Twilio-Webhook-Enabled` 'true' | 'false'

## Response `201`

Created

- ConversationsV1ConversationConversationParticipant
  - `account_sid` string, nullable — The unique ID of the [Account](https://www.twilio.com/docs/iam/api/account) responsible for this participant.
  - `conversation_sid` string, nullable — The unique ID of the [Conversation](https://www.twilio.com/docs/conversations/api/conversation-resource) for this participant.
  - `sid` string, nullable — A 34 character string that uniquely identifies this resource.
  - `identity` string, nullable — A unique string identifier for the conversation participant as [Conversation User](https://www.twilio.com/docs/conversations/api/user-resource). This parameter is non-null if (and only if) the participant is using the Conversations SDK to communicate. Limited to 256 characters.
  - `attributes` string, nullable — An optional string metadata field you can use to store any data you wish. The string value must contain structurally valid JSON if specified. **Note** that if the attributes are not set "{}" will be returned.
  - `messaging_binding` unknown
  - `role_sid` string, nullable — The SID of a conversation-level [Role](https://www.twilio.com/docs/conversations/api/role-resource) to assign to the participant.
  - `date_created` string, date-time, nullable — The date that this resource was created.
  - `date_updated` string, date-time, nullable — The date that this resource was last updated.
  - `url` string, uri, nullable — An absolute API resource URL for this participant.
  - `last_read_message_index` integer, nullable — Index of last “read” message in the [Conversation](https://www.twilio.com/docs/conversations/api/conversation-resource) for the Participant.
  - `last_read_timestamp` string, nullable — Timestamp of last “read” message in the [Conversation](https://www.twilio.com/docs/conversations/api/conversation-resource) for the Participant.

---

[API](https://skmtc.net/twilio/apis/conversations-v1.md) · [All operations](https://skmtc.net/twilio/apis/conversations-v1/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/twilio/conversations-v1/versions/34913a501fc2/schema)