KuCoin Futures API
hidden body parameter removal on POST /api/v1/orders*
Stopped workingSubscribe to KuCoin Futures APIShare
On August 3, 2026, KuCoin Futures API stopped supporting the hidden body parameter on POST /api/v1/orders* endpoints. Following this change, requests including this parameter fail. KuCoin Futures API announced that it no longer supports the hidden, iceberg, and visibleSize parameters on these calls.
Calls it hits
POST /api/v1/orders*body parameter hidden
What to use instead of these calls
Stop sending hidden, iceberg, and visibleSize on futures orders for POST /api/v1/orders and its test and batch variants. Continuing to include them causes KuCoin to reject the requests with error 400413.
In KuCoin Futures API's words
No longer supports the hidden, iceberg and visibleSize parameters.
Facts
- API
- KuCoin Futures API
api-futures.kucoin.com - Kind
- Parameter removal
- Announced
- August 3, 2026
- Takes effect
- August 3, 2026
- Calls after that day
- Fail
- Source
- Announcement
- Last updated
- Verified
- , against KuCoin Futures API's own pages
Questions
When does this change take effect?
Calls to POST /api/v1/orders*, body parameter hidden on KuCoin Futures API stopped working on August 3, 2026.
What happens to calls after August 3, 2026?
They have failed since August 3, 2026.
How do I find the calls this hits in my code?
Okapi reads your repository, finds the calls this change hits and opens a pull request with the fix. It never commits to your branches: every change comes as a pull request you review.
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You fixed this one by hand.
Okapi opens the pull request with the fix before the next breaking change reaches your code.