I did not find the API to cancel the order, may I ask how to cancel the order

[damjankuznar]

There is no API endpoint for cancelling orders on Ethereum, since the order needs to be cancelled on-chain by submitting a Cancel transaction.

You can use SDK to submit the cancel transaction: https://github.com/ProjectOpenSea/opensea-js/blob/dadc216a3adadc5506bc159c597da2090cf78636/src/seaport.ts#L884

[niao-yu]

Thank you. That took care of my problem.

[Astrophe]

Hi there, I am also trying to cancel offers, but am getting the following error when I pass a valid wallet address with active offers and an Order object: index.js:1 error:BigNumber Error: new BigNumber() not a number: [object Object] Here's my code: try { await seaport.cancelOrder({ order: Order, accountAddress: userWallet }) .catch(err => console.error('error:' + err)); } catch (error) { console.log(error) }

Any assistance would be greatly appreciated!

[mohammaddwaqas]

Hi there, I am trying to cancel order using Opensea sdk, but getting different errors, could you guys please tell how to use this cancel order function. For this I dont have metamask instead having having custom wallet for which private keys are stored into backend. LIKE I dont have mnemonics while have a private keys for this. So using private keys how I can cancel the order using OpenSea SDK. Thanks

[Astrophe]

You really shouldn't cancel orders as it's quite expensive. Rather you can empty the weth from your wallet, rendering the transaction invalid, until it expires...and you should never create a transaction without an expiration date.

https://twitter.com/ryansethwalter https://www.linkedin.com/in/ryansethwalter/

On Thu, Apr 14, 2022 at 12:36 AM Muhammad Waqas @.***> wrote:

Hi there, I am trying to cancel order using Opensea sdk, but getting different errors, could you guys please tell how to use this cancel order function. For this I dont have metamask instead having having custom wallet for which private keys are stored into backend. LIKE I dont have mnemonics while have a private keys for this. So using private keys how I can cancel the order using OpenSea SDK. Thanks

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[mohammaddwaqas]

Hi @Astrophe appreciate your comment and suggestion as well. The reason why I am asking to cancel order is that I have configured my NFT platform with OpenSea for this I have implemented the functionality for creating sell order using the Opensea API, Now I want that if user wants to cancel their order they should be able to. As on Opensea there is a functionality to cancel listing which is in turn is a cancel order. The exact same functionality I want to utilise in my Platform using the Opensea SDK. I hope you understand my concerns. So could you please tell me then how can I cancel my order.

[rashi293]

@mohammaddwaqas hello, I'm trying to do the same thing in my application. Will you please let me know how you did cancelOrder using the API?

[RealIanX]

As said above, it's not possible to cancel an order with the opensea-js API. You should cancel it directly on-chain interacting with seaport (but you will need to pay gas fees). Creating an order with a short end time is the best practice to avoid this.