An unofficial, complete Elixir client for the Treasury Prime banking API (the Ledger product) — bank accounts, ACH, wires, book transfers, FedNow, cards, account opening / KYC, check deposit (RDC), check issuing, webhooks, sandbox simulations, and more.

This module just re-exports TreasuryPrime.Client.new/1 for convenience. Everything else lives in resource-specific modules named after the Treasury Prime object they wrap: TreasuryPrime.Account, TreasuryPrime.Ach, TreasuryPrime.Wire, TreasuryPrime.Card, and so on — see the docs sidebar for the full list, grouped by area.

Quick start

client =
  TreasuryPrime.new(
    api_key_id: System.fetch_env!("TREASURY_PRIME_KEY_ID"),
    api_key_value: System.fetch_env!("TREASURY_PRIME_KEY_VALUE"),
    environment: :sandbox
  )

{:ok, page} = TreasuryPrime.Account.list(client)
Enum.each(page.data, &IO.inspect/1)

{:ok, ach} =
  TreasuryPrime.Ach.create(
    client,
    %{
      account_id: "acct_123456",
      counterparty_id: "cp_098765",
      amount: "100.00",
      direction: "credit",
      sec_code: "ccd"
    },
    idempotency_key: TreasuryPrime.Idempotency.generate_key()
  )

Design notes

• Every function comes in a non-raising and a raising flavor. TreasuryPrime.Account.get/2 returns {:ok, account} | {:error, error}; TreasuryPrime.Account.get!/2 returns the account or raises a TreasuryPrime.Error.
• Zero required HTTP dependency. The default transport is built on Erlang's own :httpc/:ssl (see TreasuryPrime.HTTPClient.Httpc). Plug in Req, Finch, or anything else by implementing the one-callback TreasuryPrime.HTTPClient behaviour and passing http_client: YourAdapter to new/1.
• Pagination is lazy. list/2 functions return a TreasuryPrime.Page; call TreasuryPrime.Page.stream/1 to get a lazy Stream over every result across every page.
• Nested/embedded objects (addresses, card controls, IMAD/OMAD wire tracing info, etc.) are kept as plain string-keyed maps rather than further nested structs, to keep the library's surface area manageable — only top-level resource fields are typed struct fields.
• Unknown response fields are ignored, not errors. Treasury Prime can add fields to responses over time; this library won't break when that happens.