---
title: "Create a family without provisioning logins or books"
method: POST
path: "/families"
tags: ["Families"]
---

# Create a family without provisioning logins or books

`POST /families`

## Request

- Base URL: `https://ledgerhq.pro/api/v1`
- URL: `https://ledgerhq.pro/api/v1/families`
- Auth: one of:
  - HTTP bearer and API key in header `x-organization-id`
  - HTTP bearer and API key in header `x-organization-id`

Firm-side family relationships only. Select the firm with x-organization-id. Owners, Admins and Staff Admins access all firm families; Staff Members need independent family assignment. Company access does not grant family access. OAuth requires the broad mcp grant, not a narrow banking scope; API keys retain ordinary agent permission scopes. No accounting organizations, portal grants, bank changes, invitations or charges are created. Writes require ordinary firm write entitlement. Cross-firm and inaccessible IDs return 404.

## Request body

- object
  - `id` string, uuid, required: Stable creation ID; reuse with the same payload on retries
  - `name` string, required
  - `members` union[], required
    - union: Select ownerId explicitly when an email matches an existing owner. New-contact input never silently replaces entered details. Adding an owner can link a matching family-only contact while preserving its name and mobile.
      - object
        - `ownerId` string, uuid, required
      - object
        - `name` string, required
        - `email` string, email, required
        - `mobilePhone` string
  - `companyIds` string[]: Accessible companies to link when the family is created

## Response `200`

Success

- object
  - `success` boolean
  - `familyId` string, uuid

## Other responses

- `201`: Created or identical retry
- `403`: Firm staff or required permission missing
- `404`: Record not found or not accessible
- `409`: Archived family, last-member removal, identity conflict, already-linked member, explicit owner selection required, or redundant administrator assignment

---

[API](https://skmtc.dev/ledgerhq-pro/apis/ledgerhq-bookkeeping-api.md) · [All operations](https://skmtc.dev/ledgerhq-pro/apis/ledgerhq-bookkeeping-api/llms.txt) · [OpenAPI document](https://skmtc.dev/ledgerhq-pro/apis/ledgerhq-bookkeeping-api/revisions/9a8269f0a586?raw)