GET /v1/customers/{id} — Retrieve a Customer

curl https://api.gateway.accelebit.com/v1/customers/a1b2c3d4-e5f6-7890-abcd-ef1234567890 \
  -H "X-API-Key: smtgw_sk_test_your_secret_key"

const response = await fetch(
  'https://api.gateway.accelebit.com/v1/customers/a1b2c3d4-e5f6-7890-abcd-ef1234567890',
  {
    headers: {
      'X-API-Key': process.env.ACCELEBIT_SECRET_KEY!,
    },
  }
);

const result = await response.json();

import requests

response = requests.get(
    'https://api.gateway.accelebit.com/v1/customers/a1b2c3d4-e5f6-7890-abcd-ef1234567890',
    headers={'X-API-Key': ACCELEBIT_SECRET_KEY},
)

result = response.json()

{
  "data": {
    "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "externalId": "user_12345",
    "email": "jane@example.com",
    "metadata": {
      "plan": "premium"
    },
    "createdAt": "2026-04-09T12:00:00.000Z"
  },
  "meta": {
    "timestamp": "2026-04-09T12:05:00.000Z"
  }
}

{
  "data": null,
  "error": {
    "status": 404,
    "name": "NOT_FOUND",
    "message": "Customer a1b2c3d4-e5f6-7890-abcd-ef1234567890 not found"
  }
}