---
title: "Create new application"
method: POST
path: "/applications"
tags: ["Applications"]
---

# Create new application

`POST /applications`

Creates a new application (architecture or service) with optional custom parameters

## Request body

- GithubComProjectAiServicesAiServicesInternalPkgCatalogApiserverModelsCreateApplicationRequest
  - `catalog_id` string, required
  - `name` string, required
  - `services` GithubComProjectAiServicesAiServicesInternalPkgCatalogApiserverModelsService[], required
    - `catalog_id` string, required
    - `components` GithubComProjectAiServicesAiServicesInternalPkgCatalogApiserverModelsComponent[], required
      - `component_type` string, required
      - `params` object
      - `provider_id` string, required
      - `version` string, required
    - `params` object — Service-level parameters
    - `version` string, required
  - `version` string, required

## Response `202`

Application creation initiated

- GithubComProjectAiServicesAiServicesInternalPkgCatalogApiserverModelsCreateApplicationResponse
  - `id` string

## Other responses

- `400` — Invalid request body or validation errors
- `401` — Unauthorized
- `409` — Application name already exists
- `422` — Parameter validation failed or invalid template
- `500` — Internal Server Error

## Changes

> 47 revisions in range; 23 could not be searched.

- **2026-02-26** `f5251dbe5d64` — 1 breaking, 6 info
  - removed the success response with the status `202`
  - removed the non-success response with the status `400`
  - removed the non-success response with the status `401`
  - removed the non-success response with the status `409`
  - …3 more

[Change history](https://skmtc.dev/ibm/apis/ai-services-catalog-api/changes/applications/post.md)

---

[API](https://skmtc.dev/ibm/apis/ai-services-catalog-api.md) · [All operations](https://skmtc.dev/ibm/apis/ai-services-catalog-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/ibm/ai-services-catalog-api/revisions/b6ffcee23f74/schema)