---
title: "Create a register"
method: POST
path: "/oauth/register"
tags: ["API authentication"]
---

# Create a register

`POST /oauth/register`

## Request

- Base URL: `https://core.sivo.com`
- URL: `https://core.sivo.com/oauth/register`
- Auth: one of:
  - API key in header `Authorization`
  - OAuth 2
    - Authorization code: `https://dashboard.sivo.com/oauth/authorize`
    - Client credentials
    - Token URL: `https://core.sivo.com/oauth/token`
- TypeScript: <https://skmtc.dev/sivo/apis/sivo-advance-api/docs/oauth/register/post.ts> (a function with typed inputs; its response is checked against the schema)

## Headers

- `Idempotency-Key` string: A unique key per operation, could be V4 UUID or other high‑entropy random string. Keys can be up to 256 bytes. See [Idempotent Requests](/docs/idempotent-requests).

## Request body

- object
  - `redirect_uris` string[], required
  - `token_endpoint_auth_method` 'none' | 'client_secret_post' | 'client_secret_basic'
  - `grant_types` string[]
  - `response_types` string[]
  - `client_name` string: Non-empty text string
  - `client_uri` string, uri: HTTP(S) URL
  - `logo_uri` string, uri: HTTP(S) URL
  - `scope` string
  - `contacts` string[]
  - `tos_uri` string, uri: HTTP(S) URL
  - `policy_uri` string, uri: HTTP(S) URL
  - `jwks_uri` string, uri: HTTP(S) URL
  - `jwks` object: Key-value metadata object
  - `software_id` string: Non-empty text string
  - `software_version` string: Non-empty text string
  - `software_statement` string: Non-empty text string

## Response `200`

Successful operation

- object
  - `redirect_uris` string[], required
  - `token_endpoint_auth_method` 'none' | 'client_secret_post' | 'client_secret_basic'
  - `grant_types` string[]
  - `response_types` string[]
  - `client_name` string: Non-empty text string
  - `client_uri` string, uri: HTTP(S) URL
  - `logo_uri` string, uri: HTTP(S) URL
  - `scope` string
  - `contacts` string[]
  - `tos_uri` string, uri: HTTP(S) URL
  - `policy_uri` string, uri: HTTP(S) URL
  - `jwks_uri` string, uri: HTTP(S) URL
  - `jwks` object: Key-value metadata object
  - `software_id` string: Non-empty text string
  - `software_version` string: Non-empty text string
  - `software_statement` string: Non-empty text string
  - `client_id` string, required: Non-empty text string
  - `client_secret` string: Non-empty text string
  - `client_id_issued_at` integer: Non-negative integer (0 to 2147483647)
  - `client_secret_expires_at` integer: Non-negative integer (0 to 2147483647)
  - `registration_client_uri` string, uri: HTTP(S) URL
  - `registration_access_token` string: Non-empty text string

## Changes

- **2026-11-03** `4bbab9699612`: 1 warning, 1 info
  - deleted the `header` request parameter `IdempotencyKey`
  - added the new optional `header` request parameter `Idempotency-Key`

[Operation history](https://skmtc.dev/sivo/apis/sivo-advance-api/changes/oauth/register/post.md)

---

[API](https://skmtc.dev/sivo/apis/sivo-advance-api.md) - [All operations](https://skmtc.dev/sivo/apis/sivo-advance-api/llms.txt) - [OpenAPI document](https://skmtc.dev/sivo/apis/sivo-advance-api/revisions/4bbab9699612?raw)