---
title: "Ack Mission"
method: POST
path: "/actions/ack"
---

# Ack Mission

`POST /actions/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/actions/ack`
- Auth: none declared

Legacy send-ack (MCP + the Railway sidecar). v4 senders use
/v4/missions/{id}/ack instead; both delegate to _apply_mission_ack so the
status-flip + v3.7.10 audit-trail behavior is identical through either door.

## 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)