ANanthropics

Send Events

Changed on
post/v1/sessions/{session_id}/events?beta=true

Request

Path parameters

session_idstring required

Headers

anthropic-versionstring

The version of the Claude API you want to use.

Read more about versioning and our version history here.

anthropic-workspace-idstring

Optional header to select the Workspace for this request. The value is a Workspace ID (for example, wrkspc_011CZkZaBF1tNoB5wlCeusgy).

Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

Request body

Example request

{
  "events": [
    {
      "type": "user.message",
      "content": [
        {
          "type": "text",
          "text": "Where is my order #1234?"
        }
      ]
    }
  ]
}

Response

Successful response (OK)

Example response

{
  "data": [
    {
      "type": "user.message",
      "id": "sevt_011CZkZGPp1iBcp4kaQSihUm",
      "content": [
        {
          "type": "text",
          "text": "Where is my order #1234?"
        }
      ],
      "processed_at": "2026-03-15T10:00:00Z"
    }
  ]
}

Changes

  • 037a593978dcRevision changes
    • info

      added the enum value admin-user-sign-out-2026-10-08 to the property items/anyOf[subschema #2]/ of the header request parameter anthropic-beta

  • f538a797852cRevision changes
    • info

      added the enum value experimental-claude-tag-2026-10-21 to the property items/anyOf[subschema #2]/ of the header request parameter anthropic-beta