alpaca-broker-account-onboarding

Alpaca Broker API — Account Onboarding & KYC

Create and manage end-user brokerage accounts under your firm. This is the first step of any Broker API integration: no funding, journaling, or trading can happen until an account reaches ACTIVE.

Read alpaca-broker-integration first for base URLs, auth, and conventions. This skill assumes Broker API + HTTP Basic auth.

Reference

• Guide: https://docs.alpaca.markets/docs/getting-started-with-broker-api, https://docs.alpaca.markets/docs/accounts
• API ref: https://docs.alpaca.markets/reference/createaccount
• Live schema: alpaca-docs MCP → get-endpoint title "Broker API" path /v1/accounts

1. Endpoints

2. Create-account request (POST /v1/accounts)

Four objects are required: contact, identity, disclosures, agreements. documents and trusted_contact are optional but usually needed for KYC.

{
  "contact": {
    "email_address": "[email protected]",
    "phone_number": "+15555555555",
    "street_address": ["20 N San Mateo Dr"],
    "city": "San Mateo",
    "state": "CA",            // required if country / country_of_tax_residence is USA
    "postal_code": "94401",
    "country": "USA"          // ISO 3166-1 alpha-3
  },
  "identity": {
    "given_name": "Jane",
    "family_name": "Doe",
    "date_of_birth": "1990-01-01",
    "tax_id_type": "USA_SSN", // see enum below
    "tax_id": "666-55-4321",
    "country_of_tax_residence": "USA",
    "funding_source": ["employment_income"]
  },
  "disclosures": {
    "is_control_person": false,
    "is_affiliated_exchange_or_finra": false,
    "is_politically_exposed": false,
    "immediate_family_exposed": false
  },
  "agreements": [
    { "agreement": "customer_agreement", "signed_at": "2026-01-02T18:09:33Z", "ip_address": "185.13.21.99" }
  ],
  "documents": [ /* OwnerDocumentUploadRequest[] — see §4 */ ],
  "trusted_contact": { "given_name": "Jim", "family_name": "Doe", "email_address": "[email protected]" }
}