---
title: "Upsert Application"
method: PUT
path: "/api/v1/app/{app_id}"
tags: ["Application"]
---

# Upsert Application

`PUT /api/v1/app/{app_id}`

Create or update an application.

## Path parameters

- `app_id` string, required — The Application's ID or UID.

## Request body

- ApplicationIn
  - `name` string, required — Application name for human consumption.
  - `rateLimit` integer, nullable — Deprecated, use `throttleRate` instead.
  - `throttleRate` integer, nullable — Maximum messages per second to send to this application. Outgoing messages will be throttled to this rate.
  - `uid` string, nullable — Optional unique identifier for the application.
  - `metadata` object

## Response `200`

- ApplicationOut
  - `uid` string, nullable — Optional unique identifier for the application.
  - `name` string, required — Application name for human consumption.
  - `rateLimit` integer, nullable — Deprecated, use `throttleRate` instead.
  - `throttleRate` integer, nullable — Maximum messages per second to send to this application. Outgoing messages will be throttled to this rate.
  - `id` string, required — The Application's ID.
  - `createdAt` string, date-time, required
  - `updatedAt` string, date-time, required
  - `metadata` object, required

## Other responses

- `201`
- `400` — Bad request
- `401` — Unauthorized
- `403` — Forbidden
- `404` — Not Found
- `409` — Conflict
- `422` — Validation Error
- `429` — Too Many Requests

---

[API](https://skmtc.net/svix/apis/svix-api.md) · [All operations](https://skmtc.net/svix/apis/svix-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/svix/svix-api/versions/16dbcc056c48/schema)