> ## Documentation Index
> Fetch the complete documentation index at: https://docs.55-tech.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ABP Changelog

> Changelog for the ABP API — new features, changes, breaking changes, and fixes across releases.

<Note>
  All timestamps are **UTC**. Breaking changes are called out explicitly — subscribe to the `status` WebSocket channel and watch this page before upgrading.
</Note>

## 2026-06-17

### 🔁 Changed

* **Single source of truth for currency.** An account's trading currency now comes solely from `accounts.currencyId`; default-currency guessing has been removed. Order stakes are denominated in `orderCurrency` (default `USD`), while bets and balances use the account's native currency. See [Currency & Limits](/abp-api/currency).
* **REST betslip path aligned with the WebSocket path** so both transports return identical odds/limit shapes.

### 🔧 Improved

* Expanded documentation: new [Core Concepts](/abp-api/concepts), [Order Placement](/abp-api/order-placement) (with copy-paste recipes), [Currency & Limits](/abp-api/currency), [Limits & Reliability](/abp-api/reliability), and [Bookmakers](/abp-api/bookmakers) guides, plus a full message/payload reference folded into the [WebSocket](/abp-api/websocket) guide.

## Earlier

### ✨ Added

* **32 bookmaker integrations** behind a single API — sportsbooks, betting exchanges, prediction markets, and punter platforms. See [Bookmakers](/abp-api/bookmakers).
* **Smart order routing** with single and multi-bookmaker placement, partial fills, and exchange sweep mode.
* **Reliable WebSocket delivery** — opt-in at-least-once delivery with `ack` / `ack_batch` / `replay` and a 100-message buffer.
* **Request deduplication** — per-order `requestUuid` idempotency with a 30-minute TTL.
* **Analytics** — `GET /positions` and `GET /pnl` for aggregated exposure and profit/loss.

### 🚧 Coming soon

* **Futures / outright markets** via `futureId` + `participantId`. The data model is in place; order placement and betslip retrieval currently return `501 Not Implemented`.