---
title: "Resume Session Stream"
method: GET
path: "/api/chat/sessions/{session_id}/stream"
tags: ["v2", "chat", "chat"]
---

# Resume Session Stream

`GET /api/chat/sessions/{session_id}/stream`

Resume an active stream for a session.

Called by the AI SDK's ``useChat(resume: true)`` on page load.
Checks for an active (in-progress) task on the session and either replays
the full SSE stream or returns 204 No Content if nothing is running.

Always replays the active turn from ``0-0``. The AI SDK UI-message parser
keeps text/reasoning part state inside a single parser instance; resuming
from a Redis cursor can skip the ``*-start`` events required by later
``*-delta`` chunks.

## Path parameters

- `session_id` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `401` — Authentication required
- `422` — Validation Error

---

[API](https://skmtc.net/significant-gravitas/apis/autogpt-agent-server.md) · [All operations](https://skmtc.net/significant-gravitas/apis/autogpt-agent-server/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/significant-gravitas/autogpt-agent-server/versions/382041c7ecb2/schema)