KyberSwap Docs

Fill A Limit Order

Take Limit Orders From The Market

Limit order execution

  1. 1.
    KyberSwap users can place a Limit Order through the interface at KyberSwap with no gas fee
  2. 2.
    Anyone can fetch these off-chain signed orders using Limit Order API to perform trade by filling the order on-chain
  3. 3.
    To fill the order, the taker can call the fillOrder, fillOrderTo, fillBatchOrderTo or fillOrderToWithPermit function on the Smart Contract.
  • Trades buyer and seller should approve their tokens to be used by KyberSwap limit order contract
  • Please refer to Limit Order Contract Addresses for the latest contract addresses
The encoding API can be used to make it easier. In the case of fillBatchOrderTo, KyberSwap's encoding API even returns encodeData so that better orders will be filled first.
Limit Order protocol fees
To support the continued development of the Limit Orders feature, KyberSwap will charge variable taker fees for orders filled on the following chains:
  • Ethereum (ChainID: 1)
  • BSC (ChainID: 56)
  • Arbitrum (ChainID: 42161)
  • Polygon PoS (ChainID: 137)
  • Optimism (ChainID: 10)
  • Avalanche (ChainID: 43114)
  • Fantom (ChainID: 250)
The fees charged will be according to the most exotic token in the trading pair. The section below lists the fees whereby the highest fee category will apply based on the classification of the input and output tokens. There are 4 categories of tokens with an additional special category for trades involving KNC.
Super stable (0.01%)
Stable (0.02%)
Normal (0.1%)
  • Top 200 tokens by market cap (identified via multiple on and off-chain services), excluding tokens under the super stable, stable, and KNC categories.
Exotic (0.3%)
  • All remaining tokens not covered in the super stable, stable, normal, and KNC categories.
KNC (0.05%)
  • Trades to and from KNC will be charged a flat 0.05% fee.