Register an OAuth client

Register a new OAuth 2.1 client. Polymorphic across org (org-scoped, dashboard users) and space (space-scoped, end-users) levels. The plaintext clientSecret is returned exactly once. A referencedSpaceId naming a PERSONAL space is refused: a personal space belongs to one member and is removed when they leave, so a client pinned to it would outlive the space its end-users signed in to.

POST/api/oauth/clients

Authorization

better-auth.session_token<token>

Cookie session from Better Auth. Requires X-Org-Id header for org-scoped routes.

In: cookie

Header Parameters

X-Org-Id?string

Organization ID. Required for cookie auth. Not needed for API key auth (org resolved from key).

Formatuuid
Idempotency-Key?string

Unique key for idempotent requests (max 255 chars). Prevents duplicate resource creation on retries. Cached for 24 hours, scoped to the organization and space: a repeat with the same method, URL and body replays the original response with Idempotent-Replayed: true, the same key with a different method, URL or body is 422 idempotency_conflict, and a concurrent duplicate is 409 idempotency_in_progress. Current permissions are checked again; run responses are projected using current visibility. This operation honours the header because it declares this parameter — operations that do not declare it refuse the header with 400 idempotency_not_supported rather than silently ignoring it (see the “Idempotency” section of the API description).

Lengthlength <= 255

Request Body

application/json

curl -X POST "https://your-instance/api/oauth/clients" \  -H "Content-Type: application/json" \  -d '{    "level": "org",    "name": "string",    "redirectUris": [      "http://example.com"    ],    "referencedOrgId": "string"  }'
{
  "id": "string",
  "clientId": "string",
  "name": "string",
  "level": "instance",
  "referencedOrgId": "string",
  "referencedSpaceId": "string",
  "redirectUris": [
    "http://example.com"
  ],
  "postLogoutRedirectUris": [
    "http://example.com"
  ],
  "scopes": [
    "string"
  ],
  "disabled": true,
  "isFirstParty": true,
  "allowSignup": true,
  "signupRole": "guest",
  "signupSpaceAssignments": [
    {
      "spaceId": "string",
      "preset_role": "admin",
      "custom_role_id": "string"
    }
  ],
  "createdAt": "string",
  "updatedAt": "string",
  "clientSecret": "string"
}

{
  "type": "https://docs.appstrate.dev/errors/validation-failed",
  "title": "Validation Failed",
  "status": 400,
  "detail": "name: Invalid input: expected string, received undefined (+2 more)",
  "code": "validation_failed",
  "request_id": "req_abc123",
  "errors": [
    {
      "field": "name",
      "code": "required",
      "message": "Invalid input: expected string, received undefined"
    },
    {
      "field": "email",
      "code": "invalid_format",
      "message": "Invalid email address"
    },
    {
      "field": "age",
      "code": "invalid_type",
      "message": "Invalid input: expected number, received string"
    }
  ]
}

{
  "type": "https://docs.appstrate.dev/errors/forbidden",
  "title": "Forbidden",
  "status": 403,
  "detail": "Insufficient permissions",
  "code": "forbidden",
  "request_id": "req_abc123"
}
{
  "type": "https://docs.appstrate.dev/errors/not-found",
  "title": "Not Found",
  "status": 404,
  "detail": "Resource not found",
  "code": "not_found",
  "request_id": "req_abc123"
}
{
  "type": "http://example.com",
  "title": "string",
  "status": 0,
  "detail": "string",
  "instance": "string",
  "code": "string",
  "request_id": "string",
  "param": "string",
  "retry_after": 0,
  "errors": [
    {
      "field": "string",
      "code": "string",
      "message": "string",
      "title": "string",
      "candidate_connections": [
        {
          "id": "string",
          "label": "string",
          "account_id": "string",
          "owned_by_actor": true,
          "needs_reconnection": true
        }
      ],
      "connection_id": "string",
      "missing_scopes": [
        "string"
      ],
      "owned_by_actor": true,
      "required_scopes": [
        "string"
      ],
      "auth_key": "string",
      "required_auth_key": "string",
      "available_auth_keys": [
        "string"
      ],
      "connect_url": "http://example.com",
      "expiresAt": "2019-08-24T14:15:22Z",
      "packageId": "string"
    }
  ]
}
{
  "type": "https://docs.appstrate.dev/errors/rate-limited",
  "title": "Rate Limited",
  "status": 429,
  "detail": "Too many requests. Please try again shortly.",
  "code": "rate_limited",
  "request_id": "req_abc123",
  "retry_after": 30
}