---
title: "V4 Ack Mission"
method: POST
path: "/v4/missions/{mission_id}/ack"
---

# V4 Ack Mission

`POST /v4/missions/{mission_id}/ack`

## Request

- Base URL: `https://api.signalpipe.io` (the document declares no server; this is the origin it was published from)
- URL: `https://api.signalpipe.io/v4/missions/{mission_id}/ack`
- Auth: none declared

v4 sender send-ack (§3.3) — replaces /actions/ack for daemon/plugin senders.

Path id + body { "outcome": "success"|"failed", "error_class": "...",
"platform_response": "..." }. Shares _apply_mission_ack with the legacy
endpoint, then adds sender-channel health signalling for the failure classes
the platforms hand back.

## Path parameters

- `mission_id` string, required

## Headers

- `authorization` string

## Request body

- object

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/signalpipe/apis/mantidae-v3-0.md) · [All operations](https://skmtc.dev/signalpipe/apis/mantidae-v3-0/llms.txt) · [OpenAPI document](https://skmtc.dev/signalpipe/apis/mantidae-v3-0/revisions/14f89c374730?raw)