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Changelog

Last updated: 2026-07-15

This page records confirmed Deepcoin V2 API changes, including new endpoints, behavior changes, deprecations, rate limit updates, and documentation corrections that may affect API integration.

Upcoming Changes​

There are no confirmed upcoming V2 API changes at this time.

Released Changes​

2026-07-15​

Released: Deepcoin V2 API official launch​

  • Type: Release
  • Scope: REST API, WebSocket
  • Change: The Deepcoin V2 API is now officially live, covering account, market, trade, copy trading, internal transfer, sub-account, affiliate, and asset modules, along with public and private WebSocket channels.
  • User impact: New integrations are recommended to use the V2 API. Please review the authentication and rate limit rules before integrating.
  • Related docs: Authentication, Rate Limit Rules

2026-07-01​

Added: Sub-account and APIKey management​

  • Type: Added
  • Scope: Sub-account
  • Change: Added V2 sub-account management endpoints: POST /deepcoin/v2/sub-account/create-sub-account, POST /deepcoin/v2/sub-account/sub-account-apikey, GET /deepcoin/v2/sub-account/sub-account-apikey, and POST /deepcoin/v2/sub-account/delete-sub-account-apikey. Creating a sub-account APIKey can omit ip; when omitted, the APIKey is created without IP binding.
  • User impact: Users can create sub-accounts and manage sub-account APIKeys through Open API V2. Delete uses POST; no reset API is provided.
  • Related docs: Create Sub Account, Create Sub Account APIKey, Get Sub Account APIKey, Delete Sub Account APIKey

2026-06-29​

Added: WebSocket batch cancel and batch amend order​

  • Type: Added
  • Scope: WebSocket
  • Change: Private WebSocket now supports batch cancel order via the batch-cancel-order action (up to 50 items per request) and batch amend order via the batch-replace-order action (up to 20 items per request), with per-item result codes and messages in the response.
  • User impact: Existing WebSocket trade and single-order cancel/amend endpoints are unchanged. Users can cancel or amend multiple orders in a single WebSocket request, reducing network round trips.
  • Related docs: WS Trade

2026-06-19​

Added: WebSocket batch order placement​

  • Type: Added
  • Scope: WebSocket
  • Change: Private WebSocket now supports batch order placement via the batch-orders action. Send {"action":"batch-orders","param":{"id":"...","args":[...]}} to submit up to 5 orders in a single request. Each order supports the same fields as REST batch orders (instId, tdMode, side, ordType, sz, px, etc.), with optional take-profit and stop-loss trigger prices.
  • User impact: Existing WebSocket trade and REST order endpoints are unchanged. Users can reduce network round trips when submitting multiple orders simultaneously.
  • Related docs: WS Trade

2026-06-11​

Added: Private WebSocket channel subscription​

  • Type: Added
  • Scope: WebSocket
  • Change: Private WebSocket now supports subscribing to specific channels via the tables parameter. Send {"action":"subscribe","tables":["Account","AccountDetail","Order","Position","Trade","TriggerOrder"]} to subscribe to only the channels you need. If tables is not specified, all channels are subscribed by default. To unsubscribe from specific channels, re-subscribe with a tables array that only includes the channels you want to keep.
  • User impact: Existing private WebSocket connections are unchanged. Users who only need specific push channels can reduce data transfer by subscribing to a subset.
  • Related docs: Private WebSocket Subscribe

2026-05-20​

Added: Split-position increase and merge APIs​

  • Type: Added
  • Scope: Trade
  • Change: Added split-position management endpoints: POST /deepcoin/v2/trade/increase-position for increasing an existing split position, and POST /deepcoin/v2/trade/merge-positions for merging eligible split positions of the same product and direction.
  • User impact: Existing order and position APIs are unchanged. These endpoints only apply to contract split positions; users should pass a valid posId returned by the positions API.
  • Related docs: Increase Position, Merge Positions

Added: V2 REST API rate limit rules page​

  • Type: Documentation update
  • Scope: REST API
  • Change: Added a rate limit reference page covering default request limits for V2 account, market, trade, copy trading, internal transfer, sub-account, affiliate, and asset APIs.
  • User impact: API behavior is unchanged. Users can use this page to plan request pacing and avoid frequency-limit errors.
  • Related docs: Rate Limit Rules

2026-05-07​

Updated: Handicap market data documentation​

  • Type: Documentation update
  • Scope: Market
  • Change: Updated the V2 handicap K-line, handicap trade, and handicap order book documentation.
  • User impact: API behavior is unchanged. Users using handicap market data should review the updated descriptions and examples.
  • Related docs: Handicap K-line 1m, Handicap Trade, Handicap Order Book