Use Off-Chain Cancellation

Reservoir has introduced the Seaport Oracle, which allows for off-chain cancellations and price changes for NFT listings and bids. When creating a listing or bid, an oracle needs to co-sign the order before it is filled. To cancel, users simply tell the oracle not to co-sign any further. The oracle server is fully open-source (See GitHub). To use the Seaport Oracle, check out the code snippets below.


orderKind's Available for Seaport Oracle on Most Chains.

For orders (bids/asks), make sure to set orderKind to the latest seaport (seaport-v1.5).

All chains are supported except zkSync. See our comprensive list of Supported Chains.

Using the Reservoir SDK

You'll need to make sure to use the latest SDK version. You can run the below code to insure you're on the latest SDK:

yarn upgrade @reservoir0x/reservoir-sdk

When using listToken or placeBid, make sure to include the "useOffChainCancellation": true option for the orderKind. See the code snippet below for a listToken example.

import { getClient, Execute } from "@reservoir0x/reservoir-sdk";
import { createWalletClient, http } from 'viem'


address = "0x8ba1f109551bD432803012645Ac136ddd6000000"
signer = createWalletClient({
  account: address,
  transport: http()

  listings: [{  
          token: "0xbc4ca0eda7647a8ab7c2061c2e118a18a936f13d:1",  
          weiPrice: 10000000000000000,  
          orderbook: "reservoir",  
          orderKind: "seaport-v1.5",
          expirationTime: 1667403808616  
    			options: {
                "seaport-v1.5": { //Should match orderKind
                  "useOffChainCancellation": true //true enables offchain cancellation
  onProgress: (steps: Execute['steps']) => {

When cancelling a listing or offer, you can use the latest version of cancelOrder. This will run through the steps of accessing the oracle order and allow off-chain, gasless cancellations.

Using the ReservoirKit

Please make sure you're using the latest version of the ReservoirKit to enable off chain order cancellation. You can run the below code to make sure it's updated.

yarn upgrade @reservoir0x/reservoir-kit-ui

To enable gasless cancellation, you'll need to make sure oracleEnabled={true}. This setting can be applied to ListModal or BidModal. See below for a sample with the BidModal:

import { BidModal } from '@reservoir0x/reservoir-kit-ui'
import { useState } from 'react'

const openState = useState(true)

      Place Bid
   key: "Fur",
   value: "Gold"
  oracleEnabled={true} //Set to true, add to code to enable offchain cancellation
  onBidComplete={(data) => {
    console.log('Bid Complete', data)
  onBidError={(error, data) => {
    console.log('Bid Transaction Error', error, data)
  onClose={(data, stepData, currentStep) => {
    console.log('BidModal Closed')

If certain criteria is met, like oracleEnabled={true}, then you can use EditListingModal or EditBidModal. Please go to Modal links to read more.

To cancel a listing or bid, just continue to use CancelListingModal or CancelBidModal. The Kit automatically detects when the oracle was enabled for a free, off chain, and gassless cancellation.

Using the API


We recommend using Reservoir SDK

Reservoir SDK includes helpers that abstract the process of iterating through steps, and returning callbacks that can be used to update your UI.

You'll need to make sure to use the latest API for access to the Seaport Oracle:

Below is an example of creating a listing using /list/v5 and implementing off chain cancellation. Options need to be added to orderKind where useOffChainCancellation is true. Everything else is the same as a normal listing.

curl --request POST \
     --url \
     --header 'accept: */*' \
     --header 'content-type: application/json' \
     --header 'x-api-key: 440c94e2-0f99-5c9e-8251-fee751d21aa1' \
     --data '
  "params": [
      "orderKind": "seaport-v1.5",
      "options": {
        "seaport-v1.5": {
          "useOffChainCancellation": true
      "orderbook": "reservoir",
      "automatedRoyalties": true,
      "currency": "0x0000000000000000000000000000000000000000",
      "token": "0xbc4ca0eda7647a8ab7c2061c2e118a18a936f13d:1",
      "weiPrice": "1000000000000000000"
  "maker": "0x8ba1f109551bD432803012645Ac136ddd64DBA72"

You can follow adding these options when making offers with /bids/v5.

When canceling an bid or listing, just use the most up to date Cancel API. The latest Cancel API will iterate through the steps necessary to cancel Seaport oracle orders.