---
search:
  tags:
    - Sessions
    - POST
seo:
  description: >-
    Append one message or an ordered batch of up to 100 messages atomically.
    Reference for the POST /api/v2/sessions/{id}/messages endpoint in the Anlyon
    API.
sidebar:
  label: Append session messages
  badge: POST
title: Append session messages
type: openapi-operation
---
Append one message or an ordered batch of up to 100 messages atomically.

`POST /api/v2/sessions/{id}/messages`