diff --git a/packages/jellyfish-api-core/__tests__/category/icxorderbook/closeOrder.test.ts b/packages/jellyfish-api-core/__tests__/category/icxorderbook/closeOrder.test.ts
new file mode 100644
index 0000000000..dd4f1d1df2
--- /dev/null
+++ b/packages/jellyfish-api-core/__tests__/category/icxorderbook/closeOrder.test.ts
@@ -0,0 +1,350 @@
+import { ContainerAdapterClient } from '../../container_adapter_client'
+import { MasterNodeRegTestContainer } from '@defichain/testcontainers'
+import {
+  ExtHTLC, HTLC, ICXClaimDFCHTLCInfo, ICXDFCHTLCInfo, ICXEXTHTLCInfo, ICXGenericResult, ICXHTLCStatus,
+  ICXHTLCType, ICXListHTLCOptions, ICXOfferInfo, ICXOrderInfo, ICXOffer, ICXOrder, ICXOrderStatus, ICXOrderType
+} from '../../../src/category/icxorderbook'
+import BigNumber from 'bignumber.js'
+import { accountDFI, idDFI, accountBTC, symbolDFI, ICXSetup, symbolBTC } from './icx_setup'
+import { RpcApiError } from '../../../src'
+
+describe('ICXOrderBook.closeOrder', () => {
+  const container = new MasterNodeRegTestContainer()
+  const client = new ContainerAdapterClient(container)
+  const icxSetup = new ICXSetup(container, client)
+
+  beforeAll(async () => {
+    await container.start()
+    await container.waitForReady()
+    await container.waitForWalletCoinbaseMaturity()
+    await icxSetup.createAccounts()
+    await icxSetup.createBTCToken()
+    await icxSetup.initializeTokensIds()
+    await icxSetup.mintBTCtoken(100)
+    await icxSetup.fundAccount(accountDFI, symbolDFI, 500)
+    await icxSetup.fundAccount(accountBTC, symbolDFI, 10) // for fee
+    await icxSetup.createBTCDFIPool()
+    await icxSetup.addLiquidityToBTCDFIPool(1, 100)
+    await icxSetup.setTakerFee(0.001)
+  })
+
+  afterAll(async () => {
+    await container.stop()
+  })
+
+  afterEach(async () => {
+    await icxSetup.closeAllOpenOffers()
+  })
+
+  it('should close the correct order', async () => {
+    const accountDFIBeforeOrder: Record<string, BigNumber> = await client.call('getaccount', [accountDFI, {}, true], 'bignumber')
+    // create first order - maker
+    const order: ICXOrder = {
+      tokenFrom: idDFI,
+      chainTo: 'BTC',
+      ownerAddress: accountDFI,
+      receivePubkey: '037f9563f30c609b19fd435a19b8bde7d6db703012ba1aba72e9f42a87366d1941',
+      amountFrom: new BigNumber(15),
+      orderPrice: new BigNumber(0.01)
+    }
+    const createOrderResult: ICXGenericResult = await client.icxorderbook.createOrder(order, [])
+    const createOrderTxId = createOrderResult.txid
+    await container.generate(1)
+
+    // list ICX orders and check
+    const ordersAfterCreateOrder: Record<string, ICXOrderInfo | ICXOfferInfo> = await client.icxorderbook.listOrders()
+    expect((ordersAfterCreateOrder as Record<string, ICXOrderInfo>)[createOrderTxId].status).toStrictEqual(ICXOrderStatus.OPEN)
+
+    // create second order - maker
+    const order2: ICXOrder = {
+      chainFrom: 'BTC',
+      tokenTo: idDFI,
+      ownerAddress: accountDFI,
+      amountFrom: new BigNumber(2),
+      orderPrice: new BigNumber(100)
+    }
+    const createOrder2Result = await client.icxorderbook.createOrder(order2, [])
+    const createOrder2TxId = createOrder2Result.txid
+    await container.generate(1)
+
+    // list ICX orders and check
+    const ordersAfterCreateOrder2: Record<string, ICXOrderInfo | ICXOfferInfo> = await client.icxorderbook.listOrders()
+    // check details for createOrder2TxId
+    expect((ordersAfterCreateOrder2 as Record<string, ICXOrderInfo>)[createOrder2TxId].status).toStrictEqual(ICXOrderStatus.OPEN)
+
+    // close order createOrderTxId - maker
+    await client.icxorderbook.closeOrder(createOrderTxId)
+    await container.generate(1)
+
+    // check createOrderTxId is no more and createOrder2TxId order still exists
+    const ordersAfterCloseOrder1: Record<string, ICXOrderInfo | ICXOfferInfo> = await client.icxorderbook.listOrders()
+    expect((ordersAfterCloseOrder1 as Record<string, ICXOrderInfo>)[createOrderTxId]).toBeUndefined()
+    expect((ordersAfterCloseOrder1 as Record<string, ICXOrderInfo>)[createOrder2TxId]).toStrictEqual(
+      {
+        status: ICXOrderStatus.OPEN,
+        type: ICXOrderType.EXTERNAL,
+        tokenTo: order2.tokenTo === '0' ? symbolDFI : symbolBTC,
+        chainFrom: order2.chainFrom,
+        ownerAddress: order2.ownerAddress,
+        amountFrom: order2.amountFrom,
+        amountToFill: order2.amountFrom,
+        orderPrice: order2.orderPrice,
+        amountToFillInToAsset: order2.amountFrom.multipliedBy(order2.orderPrice),
+        height: expect.any(BigNumber),
+        expireHeight: expect.any(BigNumber)
+      }
+    )
+
+    // close createOrder2TxId order also - maker
+    await client.icxorderbook.closeOrder(createOrder2TxId)
+    await container.generate(1)
+
+    // check both createOrder2TxId and createOrder2TxId is gone
+    const ordersAfterCloseOrder2: Record<string, ICXOrderInfo | ICXOfferInfo> = await client.icxorderbook.listOrders()
+    expect((ordersAfterCloseOrder2 as Record<string, ICXOrderInfo>)[createOrderTxId]).toBeUndefined()
+    expect((ordersAfterCloseOrder2 as Record<string, ICXOrderInfo>)[createOrder2TxId]).toBeUndefined()
+
+    // check accountDFI[idDFI] balance
+    const accountDFIBalance: Record<string, BigNumber> = await client.call('getaccount', [accountDFI, {}, true], 'bignumber')
+    expect(accountDFIBalance).toStrictEqual(accountDFIBeforeOrder)
+  })
+
+  // NOTE(surangap): check why this is failing
+  it('should close order with input utxos', async () => {
+    // create an order - maker
+    const order: ICXOrder = {
+      tokenFrom: idDFI,
+      chainTo: 'BTC',
+      ownerAddress: accountDFI,
+      receivePubkey: '037f9563f30c609b19fd435a19b8bde7d6db703012ba1aba72e9f42a87366d1941',
+      amountFrom: new BigNumber(15),
+      orderPrice: new BigNumber(0.01)
+    }
+    const createOrderResult: ICXGenericResult = await client.icxorderbook.createOrder(order, [])
+    const createOrderTxId = createOrderResult.txid
+    await container.generate(1)
+
+    // list ICX orders and check
+    const ordersAfterCreateOrder: Record<string, ICXOrderInfo | ICXOfferInfo> = await client.icxorderbook.listOrders()
+    expect((ordersAfterCreateOrder as Record<string, ICXOrderInfo>)[createOrderTxId].status).toStrictEqual(ICXOrderStatus.OPEN)
+
+    // input utxos
+    const inputUTXOs = await container.fundAddress(accountDFI, 10)
+    // close order createOrderTxId - maker
+    const closeTxId = (await client.icxorderbook.closeOrder(createOrderTxId, [inputUTXOs])).txid
+    await container.generate(1)
+
+    const rawtx = await container.call('getrawtransaction', [closeTxId, true])
+    expect(rawtx.vin[0].txid).toStrictEqual(inputUTXOs.txid)
+    expect(rawtx.vin[0].vout).toStrictEqual(inputUTXOs.vout)
+
+    // list closed orders and check order createOrderTxId
+    const ordersAfterCloseOrder: Record<string, ICXOrderInfo | ICXOfferInfo> = await client.icxorderbook.listOrders({ closed: true })
+    const orderInfoRetrived = ordersAfterCloseOrder as Record<string, ICXOrderInfo>
+    expect(orderInfoRetrived[createOrderTxId].status).toStrictEqual(ICXOrderStatus.CLOSED)
+    expect(orderInfoRetrived[createOrderTxId].ownerAddress).toStrictEqual(order.ownerAddress)
+  })
+
+  it('should close a partially settled DFI sell order', async () => {
+    // create order - maker
+    const order: ICXOrder = {
+      tokenFrom: idDFI,
+      chainTo: 'BTC',
+      ownerAddress: accountDFI,
+      receivePubkey: '037f9563f30c609b19fd435a19b8bde7d6db703012ba1aba72e9f42a87366d1941',
+      amountFrom: new BigNumber(15),
+      orderPrice: new BigNumber(0.01)
+    }
+    const createOrderResult: ICXGenericResult = await client.icxorderbook.createOrder(order, [])
+    const createOrderTxId = createOrderResult.txid
+    await container.generate(1)
+
+    // list ICX orders anc check
+    const ordersAfterCreateOrder: Record<string, ICXOrderInfo | ICXOfferInfo> = await client.icxorderbook.listOrders()
+    expect((ordersAfterCreateOrder as Record<string, ICXOrderInfo>)[createOrderTxId].status).toStrictEqual(ICXOrderStatus.OPEN)
+
+    const accountBTCBeforeOffer: Record<string, BigNumber> = await client.call('getaccount', [accountBTC, {}, true], 'bignumber')
+    // make offer to partial amount 10 DFI - taker
+    const offer: ICXOffer = {
+      orderTx: createOrderTxId,
+      amount: new BigNumber(0.10), // 0.10 BTC = 10 DFI
+      ownerAddress: accountBTC
+    }
+    const makeOfferResult = await client.icxorderbook.makeOffer(offer, [])
+    const makeOfferTxId = makeOfferResult.txid
+    await container.generate(1)
+
+    const accountBTCAfterOffer: Record<string, BigNumber> = await client.call('getaccount', [accountBTC, {}, true], 'bignumber')
+
+    // check fee of 0.01 DFI has been reduced from the accountBTCBeforeOffer[idDFI]
+    // Fee = takerFeePerBTC(inBTC) * amount(inBTC) * DEX DFI per BTC rate
+    expect(accountBTCAfterOffer[idDFI]).toStrictEqual(accountBTCBeforeOffer[idDFI].minus(0.01))
+
+    // List the ICX offers for orderTx = createOrderTxId and check
+    const ordersAfterMakeOffer: Record<string, ICXOrderInfo | ICXOfferInfo> = await client.icxorderbook.listOrders({ orderTx: createOrderTxId })
+    expect(Object.keys(ordersAfterMakeOffer).length).toBe(2) // extra entry for the warning text returned by the RPC atm.
+    expect((ordersAfterMakeOffer as Record<string, ICXOfferInfo>)[makeOfferTxId].status).toStrictEqual(ICXOrderStatus.OPEN)
+
+    const accountDFIBeforeDFCHTLC: Record<string, BigNumber> = await client.call('getaccount', [accountDFI, {}, true], 'bignumber')
+    // create DFCHTLC - maker
+    const DFCHTLC: HTLC = {
+      offerTx: makeOfferTxId,
+      amount: new BigNumber(10), // in  DFC
+      hash: '957fc0fd643f605b2938e0631a61529fd70bd35b2162a21d978c41e5241a5220',
+      timeout: 500
+    }
+    const DFCHTLCTxId = (await client.icxorderbook.submitDFCHTLC(DFCHTLC)).txid
+    await container.generate(1)
+
+    const accountDFIAfterDFCHTLC: Record<string, BigNumber> = await client.call('getaccount', [accountDFI, {}, true], 'bignumber')
+    expect(accountDFIAfterDFCHTLC[idDFI]).toStrictEqual(accountDFIBeforeDFCHTLC[idDFI].minus(0.01))
+
+    // List htlc anc check
+    const listHTLCOptions: ICXListHTLCOptions = {
+      offerTx: makeOfferTxId
+    }
+    const HTLCs: Record<string, ICXDFCHTLCInfo | ICXEXTHTLCInfo | ICXClaimDFCHTLCInfo> = await client.icxorderbook.listHTLCs(listHTLCOptions)
+    expect(Object.keys(HTLCs).length).toBe(2) // extra entry for the warning text returned by the RPC atm.
+    expect((HTLCs[DFCHTLCTxId] as ICXDFCHTLCInfo).type).toStrictEqual(ICXHTLCType.DFC)
+    expect((HTLCs[DFCHTLCTxId] as ICXDFCHTLCInfo).status).toStrictEqual(ICXOrderStatus.OPEN)
+    expect((HTLCs[DFCHTLCTxId] as ICXDFCHTLCInfo).offerTx).toStrictEqual(makeOfferTxId)
+
+    // submit EXT HTLC - taker
+    const ExtHTLC: ExtHTLC = {
+      offerTx: makeOfferTxId,
+      amount: new BigNumber(0.10),
+      hash: '957fc0fd643f605b2938e0631a61529fd70bd35b2162a21d978c41e5241a5220',
+      htlcScriptAddress: '13sJQ9wBWh8ssihHUgAaCmNWJbBAG5Hr9N',
+      ownerPubkey: '036494e7c9467c8c7ff3bf29e841907fb0fa24241866569944ea422479ec0e6252',
+      timeout: 15
+    }
+    const ExtHTLCTxId = (await client.icxorderbook.submitExtHTLC(ExtHTLC)).txid
+    await container.generate(1)
+
+    // List htlc and check
+    const listHTLCOptionsAfterExtHTLC = {
+      offerTx: makeOfferTxId
+    }
+    const HTLCsAfterExtHTLC: Record<string, ICXDFCHTLCInfo | ICXEXTHTLCInfo | ICXClaimDFCHTLCInfo> = await client.icxorderbook.listHTLCs(listHTLCOptionsAfterExtHTLC)
+    expect(Object.keys(HTLCsAfterExtHTLC).length).toBe(3) // extra entry for the warning text returned by the RPC atm.
+    expect((HTLCsAfterExtHTLC[ExtHTLCTxId] as ICXEXTHTLCInfo).type).toStrictEqual(ICXHTLCType.EXTERNAL)
+    expect((HTLCsAfterExtHTLC[ExtHTLCTxId] as ICXEXTHTLCInfo).status).toStrictEqual(ICXOrderStatus.OPEN)
+    expect((HTLCsAfterExtHTLC[ExtHTLCTxId] as ICXEXTHTLCInfo).offerTx).toStrictEqual(makeOfferTxId)
+
+    const accountBTCAfterEXTHTLC: Record<string, BigNumber> = await client.call('getaccount', [accountBTC, {}, true], 'bignumber')
+    // should have the same balance as accountBTCAfter
+    expect(accountBTCAfterEXTHTLC).toStrictEqual(accountBTCAfterEXTHTLC)
+
+    const accountDFIBeforeClaim: Record<string, BigNumber> = await client.call('getaccount', [accountDFI, {}, true], 'bignumber')
+    const accountBTCBeforeClaim: Record<string, BigNumber> = await client.call('getaccount', [accountBTC, {}, true], 'bignumber')
+
+    // claim - taker
+    const claimTxId = (await client.icxorderbook.claimDFCHTLC(DFCHTLCTxId, 'f75a61ad8f7a6e0ab701d5be1f5d4523a9b534571e4e92e0c4610c6a6784ccef')).txid
+    await container.generate(1)
+
+    // List htlc and check
+    const listHTLCOptionsAfterClaim = {
+      offerTx: makeOfferTxId,
+      closed: true
+    }
+    const HTLCsAfterClaim: Record<string, ICXDFCHTLCInfo | ICXEXTHTLCInfo | ICXClaimDFCHTLCInfo> = await client.icxorderbook.listHTLCs(listHTLCOptionsAfterClaim)
+    expect(Object.keys(HTLCsAfterClaim).length).toBe(4) // extra entry for the warning text returned by the RPC atm.
+    // we have a common field "type", use that to narrow down the record
+    if (HTLCsAfterClaim[claimTxId].type === ICXHTLCType.CLAIM_DFC) {
+      // ICXClaimDFCHTLCInfo cast
+      const ClaimHTLCInfo: ICXClaimDFCHTLCInfo = HTLCsAfterClaim[claimTxId] as ICXClaimDFCHTLCInfo
+      expect(ClaimHTLCInfo.dfchtlcTx).toStrictEqual(DFCHTLCTxId)
+      expect(ClaimHTLCInfo.seed).toStrictEqual('f75a61ad8f7a6e0ab701d5be1f5d4523a9b534571e4e92e0c4610c6a6784ccef')
+    }
+
+    // check HTLC DFCHTLCTxId is in claimed status
+    if (HTLCsAfterClaim[DFCHTLCTxId].type === ICXHTLCType.DFC) {
+      // ICXDFCHTLCInfo cast
+      const DFCHTLCInfo: ICXDFCHTLCInfo = HTLCsAfterClaim[DFCHTLCTxId] as ICXDFCHTLCInfo
+      expect(DFCHTLCInfo.status).toStrictEqual(ICXHTLCStatus.CLAIMED)
+    }
+
+    const accountDFIAfterClaim: Record<string, BigNumber> = await client.call('getaccount', [accountDFI, {}, true], 'bignumber')
+    const accountBTCAfterClaim: Record<string, BigNumber> = await client.call('getaccount', [accountBTC, {}, true], 'bignumber')
+
+    // maker should get incentive + maker deposit and taker should get amount in DFCHTLCTxId HTLC - takerfee
+    expect(accountDFIAfterClaim[idDFI]).toStrictEqual(accountDFIBeforeClaim[idDFI].plus(0.0125))
+    expect(accountBTCAfterClaim[idDFI]).toStrictEqual(accountBTCBeforeClaim[idDFI].plus(10))
+
+    // offer should be close by now
+    const offersForOrder1: Record<string, ICXOrderInfo | ICXOfferInfo> = await client.icxorderbook.listOrders({ orderTx: createOrderTxId })
+    expect(Object.keys(offersForOrder1).length).toBe(1) // extra entry for the warning text returned by the RPC atm.
+
+    // check partial order remaining
+    const ordersAfterClaim: Record<string, ICXOrderInfo | ICXOfferInfo> = await client.icxorderbook.listOrders()
+    const orderInfo: Record<string, ICXOrderInfo> = ordersAfterClaim as Record<string, ICXOrderInfo>
+    expect(orderInfo[createOrderTxId].tokenFrom).toStrictEqual(symbolDFI)
+    expect(orderInfo[createOrderTxId].chainTo).toStrictEqual('BTC')
+    expect(orderInfo[createOrderTxId].ownerAddress).toStrictEqual(accountDFI)
+    expect(orderInfo[createOrderTxId].receivePubkey).toStrictEqual('037f9563f30c609b19fd435a19b8bde7d6db703012ba1aba72e9f42a87366d1941')
+    expect(orderInfo[createOrderTxId].amountFrom).toStrictEqual(new BigNumber(15))
+    expect(orderInfo[createOrderTxId].amountToFill).toStrictEqual(new BigNumber(5))
+    expect(orderInfo[createOrderTxId].orderPrice).toStrictEqual(new BigNumber(0.01))
+    expect(orderInfo[createOrderTxId].amountToFillInToAsset).toStrictEqual(new BigNumber(0.0500000))
+
+    // try to close the createOrderTxId order - maker
+    await client.icxorderbook.closeOrder(createOrderTxId)
+    await container.generate(1)
+
+    // check createOrderTxId order is no more
+    const ordersAfterCloseOrder: Record<string, ICXOrderInfo | ICXOfferInfo> = await client.icxorderbook.listOrders()
+    expect((ordersAfterCloseOrder as Record<string, ICXOrderInfo>)[createOrderTxId]).toBeUndefined()
+
+    // check accountDFI[idDFI] balance, remaining 5 DFI should be returned
+    const accountDFIFinalBalance: Record<string, BigNumber> = await client.call('getaccount', [accountDFI, {}, true], 'bignumber')
+    expect(accountDFIFinalBalance[idDFI]).toStrictEqual(accountDFIAfterClaim[idDFI].plus(5))
+  })
+
+  it('should return an error when try to close an order with invalid transaction id', async () => {
+    // create an order - maker
+    const order: ICXOrder = {
+      tokenFrom: idDFI,
+      chainTo: 'BTC',
+      ownerAddress: accountDFI,
+      receivePubkey: '037f9563f30c609b19fd435a19b8bde7d6db703012ba1aba72e9f42a87366d1941',
+      amountFrom: new BigNumber(15),
+      orderPrice: new BigNumber(0.01)
+    }
+    const createOrderResult: ICXGenericResult = await client.icxorderbook.createOrder(order, [])
+    const createOrderTxId = createOrderResult.txid
+    await container.generate(1)
+
+    // list ICX orders and check
+    const ordersAfterCreateOrder: Record<string, ICXOrderInfo | ICXOfferInfo> = await client.icxorderbook.listOrders()
+    expect((ordersAfterCreateOrder as Record<string, ICXOrderInfo>)[createOrderTxId].status).toStrictEqual(ICXOrderStatus.OPEN)
+
+    // close order "123" - maker
+    const promise = client.icxorderbook.closeOrder('123')
+    await expect(promise).rejects.toThrow(RpcApiError)
+    await expect(promise).rejects.toThrow('RpcApiError: \'orderTx (0000000000000000000000000000000000000000000000000000000000000123) does not exist\', code: -8, method: icx_closeorder')
+
+    // close order "INVALID_TX_ID" - maker
+    const promise2 = client.icxorderbook.closeOrder('INVALID_TX_ID')
+    await expect(promise2).rejects.toThrow(RpcApiError)
+    await expect(promise2).rejects.toThrow('RpcApiError: \'orderTx (0000000000000000000000000000000000000000000000000000000000000000) does not exist\', code: -8, method: icx_closeorder')
+
+    // check createOrderTxId order still exists
+    const ordersAfterCloseOrderAttempts: Record<string, ICXOrderInfo | ICXOfferInfo> = await client.icxorderbook.listOrders()
+    expect((ordersAfterCloseOrderAttempts as Record<string, ICXOrderInfo>)[createOrderTxId]).toStrictEqual(
+      {
+        status: ICXOrderStatus.OPEN,
+        type: ICXOrderType.INTERNAL,
+        tokenFrom: order.tokenFrom === '0' ? symbolDFI : symbolBTC,
+        chainTo: order.chainTo,
+        receivePubkey: order.receivePubkey,
+        ownerAddress: order.ownerAddress,
+        amountFrom: order.amountFrom,
+        amountToFill: order.amountFrom,
+        orderPrice: order.orderPrice,
+        amountToFillInToAsset: order.amountFrom.multipliedBy(order.orderPrice),
+        height: expect.any(BigNumber),
+        expireHeight: expect.any(BigNumber)
+      }
+    )
+  })
+})
diff --git a/packages/jellyfish-api-core/__tests__/category/icxorderbook/listHTLCs.test.ts b/packages/jellyfish-api-core/__tests__/category/icxorderbook/listHTLCs.test.ts
index 541ab14c4e..5f54393bcf 100644
--- a/packages/jellyfish-api-core/__tests__/category/icxorderbook/listHTLCs.test.ts
+++ b/packages/jellyfish-api-core/__tests__/category/icxorderbook/listHTLCs.test.ts
@@ -32,8 +32,7 @@ describe('ICXOrderBook.listHTLCs', () => {
   })
 
   afterEach(async () => {
-    // NOTE(surangap): enable this after #ain/583
-    // await icxSetup.closeAllOpenOffers()
+    await icxSetup.closeAllOpenOffers()
   })
 
   it('should list HTLCs for particular offer', async () => {
diff --git a/packages/jellyfish-api-core/src/category/icxorderbook.ts b/packages/jellyfish-api-core/src/category/icxorderbook.ts
index e66abef5c4..1c877e8883 100644
--- a/packages/jellyfish-api-core/src/category/icxorderbook.ts
+++ b/packages/jellyfish-api-core/src/category/icxorderbook.ts
@@ -153,6 +153,25 @@ export class ICXOrderBook {
     )
   }
 
+  /**
+   * Closes ICX order
+   *
+   * @param {string} orderTx Transaction id of maker order
+   * @param {UTXO[]} [utxos = []] Specific utxos to spend
+   * @param {string} utxos.txid transaction Id
+   * @param {number} utxos.vout The output number
+   * @return {Promise<ICXGenericResult>} Object indluding transaction id of the the transaction
+   */
+  async closeOrder (orderTx: string, utxos: UTXO[] = []): Promise<ICXGenericResult> {
+    return await this.client.call(
+      'icx_closeorder',
+      [
+        orderTx, utxos
+      ],
+      'bignumber'
+    )
+  }
+
   /**
    * Returns information about order or fillorder
    *
diff --git a/website/docs/jellyfish/api/icxorderbook.md b/website/docs/jellyfish/api/icxorderbook.md
index 092f36c067..2269b4d963 100644
--- a/website/docs/jellyfish/api/icxorderbook.md
+++ b/website/docs/jellyfish/api/icxorderbook.md
@@ -169,6 +169,26 @@ interface ICXGenericResult {
 }
 ```
 
+## closeOrder
+
+Closes ICX order
+
+```ts title="client.icxorderbook.closeOrder()"
+interface icxorderbook {
+  closeOrder (orderTx: string, utxos: UTXO[] = []): Promise<ICXGenericResult>
+}
+
+interface UTXO {
+  txid: string
+  vout: number
+}
+
+interface ICXGenericResult {
+  WARNING: string
+  txid: string
+}
+```
+
 ## getOrder
 
 Returns information about order or fillorder