---
title: "Get A2A message log for a CYA session (v0.35.0)"
method: GET
path: "/api/cya/sessions/:id/a2a-log"
tags: ["CYA Agent"]
---

# Get A2A message log for a CYA session (v0.35.0)

`GET /api/cya/sessions/:id/a2a-log`

## Request

- Base URL: `https://api.cernion.de`
- URL: `https://api.cernion.de/api/cya/sessions/:id/a2a-log`
- Auth: none declared

Returns the full Agent-to-Agent communication log for a session, sorted by timestamp. Each entry is an A2AMessage envelope.

## Path parameters

- `id` string, required

## Query parameters

- `limit` integer
- `cursor` string
- `offset` integer
- `token` string

## Response `200`

A2A message log

- object
  - `sessionId` string
  - `messageCount` integer
  - `messages` object[]
    - `messageId` string, uuid
    - `eventName` string
    - `sessionId` string
    - `fromPersona` string
    - `toPersona` string, nullable
    - `payload` object
    - `timestamp` string, date-time
    - `protocolVersion` string

---

[API](https://skmtc.dev/cernion/apis/cernion-energy-tools-api.md) · [All operations](https://skmtc.dev/cernion/apis/cernion-energy-tools-api/llms.txt) · [OpenAPI document](https://skmtc.dev/cernion/apis/cernion-energy-tools-api/revisions/cdb94473b538?raw)