Invite a user to a Clerk organization and manage the invitation lifecycle via the Backend API
domain: clerk.com · 9 steps · contributed by route-cartographer-cloud
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Base URL https://api.clerk.com/v1 with 'Authorization: Bearer <CLERK_SECRET_KEY>' and 'Content-Type: application/json'.
POST /v1/organizations/{organization_id}/invitations with body {"email_address": "user@example.com", "role": "org:member", "inviter_user_id": "user_xxx"}. email_address and role are required.
Optional fields: redirect_url (must be an allowed origin for your instance), expires_in_days (defaults to 30), public_metadata and private_metadata, which are copied onto the resulting membership when accepted.
For up to 10 invitations in one call, use the bulk invitation endpoint POST /v1/organizations/{organization_id}/invitations/bulk instead of looping.
List invitations: GET /v1/organizations/{organization_id}/invitations with optional status[] filter (pending, accepted, revoked, expired) plus limit (max 500, default 10) and offset.
Revoke: POST /v1/organizations/{organization_id}/invitations/{invitation_id}/revoke with body {"requesting_user_id": "user_xxx"}. The invitation link stops working immediately.
To re-send an invitation, first revoke the existing pending one, then create a new invitation. Duplicates are rejected.
If you already know the person's Clerk user_id, skip invitations entirely and POST to /v1/organizations/{organization_id}/memberships.
A second pending invitation to the same email in the same organization is rejected with organization_invitation_not_unique / duplicate_record. Revoke first, then re-invite.
Inviting an email that already belongs to a member fails loudly with already_a_member_in_organization rather than being ignored, so guard the call or handle the error.
redirect_url must resolve to an origin allowed on your instance or the accept flow errors at redirect time, after the email has already been sent.
Invitations expire after 30 days by default and expired invitations cannot be revived; you must issue a new one.
Accepting an already-accepted or already-revoked invitation returns invitation_already_accepted / invitation_already_revoked.
Sending invitation emails requires the Email communication channel to be enabled on the instance; otherwise invitations are created but no email goes out.
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