Add a customer address
Supports Idempotency-Key header for safe retries.
Admin API key (server-to-server). Issue via the dashboard at Settings → API keys. Plain-text key is shown once — store in a secret manager. Format: Authorization: Bearer brainerce_xxxxxxxxx.
In: header
Path Parameters
Customer ID
Header Parameters
Client-supplied key (a UUID v4 is the recommended form, max 255 characters) that makes this mutation safe to retry.
- Replay window: 24 hours. The first response for a key is cached; a retry inside the window with the same request body returns the original status and body without re-running the handler.
- Reusing a key with a different body returns
409 Conflictwithcode: "IDEMPOTENCY_KEY_REUSED". The request fingerprint (method + path + body hash) is compared against the stored one; a mismatch is refused rather than served the old response. - Keys are scoped to the calling credential and store — two API keys may safely use the same key value.
- Error responses are cached too, so a retry of a request that failed validation returns the same 400 immediately.
- Sending this header on a
GETreturns400withcode: "IDEMPOTENCY_KEY_NOT_SUPPORTED"— GETs are already idempotent. - Support is per-route and this parameter is the authoritative signal: a key sent to a route that does not declare it is accepted and silently ignored.
length <= 255Friendly label shown in the address picker UI.
First name on the address.
Last name on the address.
Company name (B2B).
Street address line 1.
Street address line 2 (apt/suite).
City.
State / Province.
Postal / ZIP code.
ISO 3166-1 alpha-2 country code.
Phone (E.164 recommended).
Mark this address as the customer's default. Promoting a new default automatically demotes the previous one.
curl -X POST "https://api.brainerce.com/api/v1/customers/string/addresses" \ -H "Idempotency-Key: string" \ -H "Content-Type: application/json" \ -d '{ "firstName": "Jane", "lastName": "Doe", "line1": "123 Main St", "city": "San Francisco", "postalCode": "94103", "country": "US" }'{
"id": "addr_abc123",
"label": "Home",
"firstName": "Jane",
"lastName": "Doe",
"company": "Acme Inc",
"line1": "123 Main St",
"line2": "Apt 4B",
"city": "San Francisco",
"region": "CA",
"postalCode": "94103",
"country": "US",
"phone": "+14155552671",
"isDefault": true,
"createdAt": "2025-08-01T09:00:00.000Z",
"updatedAt": "2026-05-12T11:24:08.000Z"
}{
"statusCode": 400,
"code": "VALIDATION_FAILED",
"message": "name should not be empty, price must be a positive number",
"timestamp": "2026-08-23T10:15:00.000Z",
"path": "/api/v1/customers/{id}/addresses"
}{
"statusCode": 401,
"code": "UNAUTHORIZED",
"message": "Invalid or expired credential",
"timestamp": "2026-08-23T10:15:00.000Z",
"path": "/api/v1/customers/{id}/addresses"
}{
"statusCode": 403,
"code": "INSUFFICIENT_SCOPE",
"message": "API key does not have the required scope: products:write",
"timestamp": "2026-08-23T10:15:00.000Z",
"path": "/api/v1/customers/{id}/addresses"
}{
"statusCode": 404,
"code": "RESOURCE_NOT_FOUND",
"message": "Resource not found",
"timestamp": "2026-08-23T10:15:00.000Z",
"path": "/api/v1/customers/{id}/addresses"
}{
"statusCode": 429,
"code": "RATE_LIMITED",
"message": "Too many requests",
"details": {
"retryAfterSeconds": 12
},
"timestamp": "2026-08-23T10:15:00.000Z",
"path": "/api/v1/store"
}