Inspect workspace fork information and copyable resources. Lineage does not grant access to the other workspace; fork creation requires source admin and sync requires admin on both sides. Workspace API keys return 403; use a personal API key or scoped OAuth token.
OAuth scope: api:read.
GET
/api/v2/workspaces/{workspaceId}/fork/lineageX-API-Key<token>
Your Sim API key, personal or workspace-scoped. Generate one under Settings, then API Keys. Operations that reject workspace keys say so in their own description.
In: header
Path Parameters
workspaceId*string
Explicit current workspace scope.
Length
1 <= length <= 128Response Body
application/json
application/json
application/json
application/json
application/json
application/json
application/json
application/json
application/json
application/json
curl -X GET "https://www.sim.ai/api/v2/workspaces/string/fork/lineage" \ -H "X-API-Key: YOUR_API_KEY"{
"data": {
"current": {
"id": "string",
"name": "string",
"organizationId": "string"
},
"parent": {
"id": "string",
"name": "string",
"organizationId": "string"
}
}
}{
"error": {
"code": "BAD_REQUEST",
"message": "Invalid request"
}
}{
"error": {
"code": "UNAUTHORIZED",
"message": "Authentication required"
}
}{
"error": {
"code": "FORBIDDEN",
"message": "Insufficient workspace permissions",
"details": {
"code": "INSUFFICIENT_WORKSPACE_ROLE"
}
}
}{
"error": {
"code": "NOT_FOUND",
"message": "Not found"
}
}{
"error": {
"code": "CONFLICT",
"message": "Webhook path already in use"
}
}{
"error": {
"code": "PAYLOAD_TOO_LARGE",
"message": "Request body is too large"
}
}{
"error": {
"code": "RATE_LIMITED",
"message": "API rate limit exceeded",
"details": {
"retryAfter": "2026-01-01T00:00:30.000Z"
}
}
}{
"error": {
"code": "INTERNAL_ERROR",
"message": "Internal server error"
}
}{
"error": {
"code": "SERVICE_UNAVAILABLE",
"message": "Service temporarily unavailable"
}
}