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Changelog

Notable changes to the OnlyTrade API and docs. Dates are when the change reached the shared reference deployment.

Deprecation policy​

We version the API as v1 and avoid breaking changes within a version.

  • Additive changes (new endpoints, new optional fields, new response fields) ship without notice — write your clients to ignore unknown fields.
  • Breaking changes are introduced under a new version path and the previous behaviour is supported for at least 90 days after a dated deprecation notice here.
  • Deprecations are announced in this changelog with the removal date and a migration note.

2026-09​

Docs

  • Trader API reference is now trader-only. It lists just the 30 endpoints a Trader or API-key token can call (orders, positions, symbols, prices, history), grouped by task. Back-office endpoints live in the Broker API.
  • New guides for bot builders: Orders, positions & deals, Instruments & prices, a complete Build a trading bot example, and a production checklist.
  • Authentication now documents API keys (client_credentials), refresh-token rotation, the session limit, and idle logout.
  • Corrections:
    • The WebSocket handshake needs the access token as well as session_id.
    • start_market_feed streams every symbol and takes no symbol list.
    • Price ticks are binary CSV frames.
    • The summary event is account_Summary.
    • Closing a position takes only volume.
    • Orders don't take fill_policy.
    • An order's result arrives on the WebSocket.
  • The Trader OpenAPI spec is now at /openapi/onlytrade-trader.json.

2026-06​

  • Prop risk propagates live. Changing a group's prop settings (group_enable_prop, group_max_day_lose, group_total_days_lose, group_max_day_profit) now updates every account in the group — and inheriting sub-groups — in real time, with no re-login. See Groups & risk.
  • Full deal history in one request. History endpoints now accept a higher page size so a client can pull an account's entire closed-trade history in a single call.
  • Transactions ledger. Deposits, withdrawals, adjustments, and credits are exposed through GET /api/v1/accounts/me/transactions with an origin filter. See Funding & ledger.

Docs​

  • New Brand API section documenting the back-office layer: authentication, provisioning, groups & risk, funding, and CRM login.
  • Published Environments & testing and Rate limits pages, and an llms.txt index for AI agents.
  • The OpenAPI spec was published for download.