Add a space member
Grant a user an explicit role in this space, limited to permissions held by the caller. Identify the user by exactly one of userId or email (trimmed and case-normalized). The user must already be an org member (404 otherwise). An existing explicit row is refused with 409 space_member_exists; use PATCH to change its role. Owners and admins are refused with 409 redundant_space_role — they already run every space. A custom_role_id must name a bundle of this organization (404 otherwise); a preset and a bundle are bounded the same way.
POST
/api/spaces/{id}/membersbetter-auth.session_token<token>
Cookie session from Better Auth. Requires X-Org-Id header for org-scoped routes.
In: cookie
Path Parameters
id*string
Header Parameters
X-Org-Id?string
Organization ID. Required for cookie auth. Not needed for API key auth (org resolved from key).
Format
uuidRequest Body
application/json
curl -X POST "https://your-instance/api/spaces/string/members" \ -H "Content-Type: application/json" \ -d '{}'{
"object": "space_member",
"userId": "string",
"preset_role": "admin",
"custom_role_id": "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/unauthorized",
"title": "Unauthorized",
"status": 401,
"detail": "Invalid or missing session",
"code": "unauthorized",
"request_id": "req_abc123"
}{
"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"
}
]
}