---
title: "Wake Session Pending Input"
method: POST
path: "/v1/store/chat-sessions/{chat_session_id}/wake"
tags: ["store"]
---

# Wake Session Pending Input

`POST /v1/store/chat-sessions/{chat_session_id}/wake`

## Request

- Base URL: `https://api.quadrillion.io` (the document declares no server; this is the origin it was published from)
- URL: `https://api.quadrillion.io/v1/store/chat-sessions/{chat_session_id}/wake`
- Auth: none declared

Drain the session's queued input on THIS task, if it is idle.

Used after a shutdown handoff: the task that paused the turn queued a
RESUME row and parked the session idle, but cannot wake another task
itself. A detached client (or anyone) calls this; the load balancer lands
it on a live task, which claims the row and continues the turn. A task
that is itself shutting down answers 503 so the caller's retry moves on.

## Path parameters

- `chat_session_id` string, required

## Response `202`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

## Changes

- **2026-09-18** `abf76937a751`: 2 info
  - added the optional property `detail/items/ctx` to the response with the `422` status
  - added the optional property `detail/items/input` to the response with the `422` status
- **2026-09-13** `9130e4640e24`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/changes/v1/store/chat-sessions/:chat_session_id/wake/post.md)

---

[API](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api.md) - [All operations](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/llms.txt) - [OpenAPI document](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/revisions/2e1425e0e054?raw)