> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getsly.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Register an OAuth client

> Register a merchant or third-party app that will link buyer accounts. Returns `client_secret` once.



## OpenAPI

````yaml /api-reference/openapi.json post /v1/ucp/identity/clients
openapi: 3.1.0
info:
  title: Sly API
  description: >-
    The Agentic Economy Platform — stablecoin payments, agent wallets,
    multi-protocol commerce, and AI agent orchestration.
  version: 1.0.0
  contact:
    name: Sly
    url: https://getsly.ai
    email: support@getsly.ai
servers:
  - url: https://api.getsly.ai/v1
    description: Production
  - url: https://sandbox.getsly.ai/v1
    description: Sandbox
security:
  - bearerAuth: []
paths:
  /v1/ucp/identity/clients:
    post:
      tags:
        - UCP Identity
      summary: Register an OAuth client
      description: >-
        Register a merchant or third-party app that will link buyer accounts.
        Returns `client_secret` once.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                name:
                  type: string
                  minLength: 1
                  maxLength: 255
                redirect_uris:
                  type: array
                  items:
                    type: string
                    format: uri
                  minItems: 1
                scopes:
                  type: array
                  items:
                    type: string
                  minItems: 1
              required:
                - name
                - redirect_uris
                - scopes
      responses:
        '201':
          description: Client created
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    allOf:
                      - $ref: '#/components/schemas/OAuthClient'
                      - type: object
                        properties:
                          client_secret:
                            type: string
                            description: Shown once
                        required:
                          - client_secret
                required:
                  - data
      security:
        - bearerAuth: []
components:
  schemas:
    OAuthClient:
      type: object
      properties:
        client_id:
          type: string
        name:
          type: string
        redirect_uris:
          type: array
          items:
            type: string
            format: uri
        scopes:
          type: array
          items:
            type: string
        active:
          type: boolean
        created_at:
          type: string
          format: date-time
      required:
        - client_id
        - name
        - redirect_uris
        - scopes
        - active
        - created_at
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        API key (pk_test_* or pk_live_*), JWT session, agent token (agent_*),
        Ed25519 session (sess_*), or portal token (portal_*).

````