---
title: "Creates a synchronous action."
method: PUT
path: "/actions"
---

# Creates a synchronous action.

`PUT /actions`

## Request body

- InstanceActionInfo — Variant wrapper containing the real action.
  - `action_type` 'BlockDeviceRescan' | 'InstanceStart' | 'InstanceHalt' — Enumeration indicating what type of action is contained in the payload
  - `payload` string

## Response `204`

The update was successful

## Other responses

- `400` — The action cannot be executed due to bad input
- `default` — Internal Server Error

---

[API](https://skmtc.dev/solo-io/apis/firecracker-api.md) · [All operations](https://skmtc.dev/solo-io/apis/firecracker-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/solo-io/firecracker-api/revisions/6e4082be4a32/schema)