Questions tagged [0x]
The 0x tag has no usage guidance.
287
questions
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360
views
0x exchange v3 debugging (execution reverted, more details inside)
I am trying to swap the erc721 token for erc20 using the 0x protocol which I deployed on the testnet.
Using the following script to perform the swap:
/**
* Local, Data & Env imports
* Exchange....
- 1,791
0
votes
1
answer
52
views
My conversion from Matic to Dock resulted in lost funds
I attempted a conversion of matic to dock transaction hash id is 0xea1abb0ac3fc257966bd5331cee6dbffd9d6a5a25a909392480a7b889e6613b9 Yet 99% of all my funds vanished
0
votes
1
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84
views
Why does my DAI limit buy not go through for USDC?
I am trying to purchase USDC using the DAI I have in Metamask but it will not fill my order.
I've given Matcha permission to access my DAI, I've paid the ETH required and now I'd like to just place a ...
0
votes
1
answer
66
views
yarn Error fast-abi repository not found
I am trying to install 0x-api on windows. On running yarn, I get the error: error D:\crypto\0x-api\node_modules\fast-abi: Command failed. response status 404 Not Found on https://github.com/0xProject/...
- 11
1
vote
2
answers
304
views
Swap problem with big amounts (PancakeSwap liquidity)
I try to swap some tokens and receive BUSD. When I enter the amount 100_000 for my token, API returns the normal price. But it doesnt work when I increase this amount more then 1_000_000. All ...
- 11
0
votes
1
answer
207
views
How to set up local 0x API testnet on dev machine?
I set up local 0x testnet as described here-- https://0x.org/docs/guides/setting-up-a-local-0x-testnet. That works great. The document also states that the local testnet is pre-setup with dummy tokens....
- 103
0
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95
views
FillLimitOrder Error: Cannot read property 'then' of undefined
Can anyone help me fix the error of this code:
import { BigNumber, providerUtils } from '@0x/utils';
const _0xProtocolFeeMultiplier = 70000;
async function fill() {
const utils = require("@0x/...
- 43
0
votes
2
answers
183
views
API Key isn't UUID compliant Error
I'm trying to test local 0x-api.
When I do yarn test I dont get any errors.
When I do yarn start or yarn db:migrate I got an error: Error: API Key isn't UUID compliant. I've only changed the .env ...
- 11
0
votes
1
answer
203
views
0x Swap Failed , brownie integration
I've one error when, swapping ERC20 -> ERC20 with 0x API, the swap failed , previoulsy was getting an error when fetching from etherscan , but manage it to work by calling contract from abi with ...
0
votes
1
answer
34
views
0x v3 audit report sha1 hashes
Trying to cross reference the sha1 hashes from the audit report here: https://consensys.net/diligence/audits/2019/09/0x-v3-exchange/
And the hashes I generated from the following repo at the 3.0 ...
- 146
0
votes
1
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46
views
cant view validation errors while using getOrderHash
i am trying to hash my order like this
import { orderHashUtils } from '@0x/order-utils';
orderHashUtils.getOrderHash(order,1,"0x080bf510FCbF18b91105470639e9561022937712")
but i am getting ...
- 1
1
vote
1
answer
69
views
is it possible to remapping directly from etherscan
I have one contract from etherscan and I'm the settings remapping one dependency on the root path that I don't own, is it possible to override it ?
"remappings": [
"@0x/contracts-...
0
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1
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946
views
How to calculate price impact on 0x API
I want to calculate price impact of my order on 0x API. What is the best way to get this value?
This is an example quote to swap 10 BNB to Farm token. Pancakeswap shows 5% price impact for this swap. ...
- 57
1
vote
1
answer
172
views
0x API Help: Order Routing
Our project is working to integrate order routing for the trading feature on our application, and we are exploring using the 0x API for this purpose.
The design of our system is such that we intend to ...
- 11
0
votes
1
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142
views
0x OrderBook API is not storing the orders
I want to send out 2 signed orders. I am pulling the orderBook to check for the orders and have them accessible for use. This is the way I am doing the order and signing it. The issue is that I have ...
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0
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1
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275
views
How accurate are 0x gas estimations?
I'm trying to get gas estimations for a swap from 0x via 'swap/v1/quote' method, but fields gas and estimatedGas are wrong for the most of the cases.
Is there any way to calculate it more properly?
...
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0
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100
views
0x protocol: how to make a rfq order info fetch function call?
Hi team recently I was using the package @0x/contract-wrappers to interact with 0x but now stuck at the function call, my code:
const Web3 = require('web3');
const ContractWrappers = require('@0x/...
- 1
0
votes
1
answer
162
views
Failed to fill orders
I used this code to fill an order, but it did not work. Can anyone help?
import { BigNumber, providerUtils } from '@0x/utils';
async function fill() {
const utils = require("@0x/protocol-utils&...
- 43
0
votes
1
answer
267
views
Failing to fill 0x quote
I'm trying to fill a quote that I get from the 0x API:
const qs = createQueryString({
sellToken: 'TUSD',
buyToken: 'WETH',
sellAmount: BigInt(882693 * 10 ** 18)
});
..but the transaction ...
- 605
1
vote
1
answer
91
views
Are there multiple 0x order formats?
I am currently writing an arbitrage bot which fills 0x orders but something that is confusing me is that the 0x order format is not consistent within their documentation.
The order message format ...
- 126
1
vote
1
answer
961
views
Member "concat" not found or not visible after argument-dependent lookup
I'm trying to concatenate a series of strings but I'm getting the following error:
TypeError: Member "concat" not found or not visible after argument-dependent lookup in bytes storage ...
- 605
0
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0
answers
138
views
Unsure why my 0x transaction failed (more details inside)
I've written a simple contract tries to swap a few 0x pairs, for doing simple arbs or other 3 way trades.
However, when I get the quotes from their API https://0x.org/docs/api (in serial, which takes ...
- 103
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342
views
How to calculate the right amount of a token to use in 0x quote endpoint
I'm trying to use 0x to buy tokens with ETH. I'm following the sample at https://0x.org/docs/guides/swap-tokens-with-0x-api#swap-eth-for-1-dai.
I got the token address, and the decimals. let's say ...
1
vote
1
answer
111
views
What is the method to send a transaction with data from solidity?
Sorry for the noob question, but Im trying to understand some definitions and clarify the limits between solidity, web3, etc. I have obtained a tx looking like the following from the 0x API:
b'{"...
- 11
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votes
1
answer
33
views
Cost to cancel or change an unfilled Augur order
With the launch of Augur v2, what is the cost to cancel a previously entered order that has not yet been filled? Is this cost the same as the cost to modify the order by changing the bid, ask or ...
- 11
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votes
1
answer
976
views
How to decode an Ethereum transaction input of an 0x transaction
The input data is very large. I believe there are multiple functions called.
Can I just hash each of the functions in the ABI, get the 6 characters and compare them to the first six characters of the ...
- 11
1
vote
0
answers
104
views
How to customize my own 0x exchange
I would like to know how my custom ERC721 0x marketplace can be customized.
I know the FAQ has a walkthrough and I already found out how to inject my custom ERC20 token address, symbols etc. but I ...
0
votes
1
answer
129
views
Getting "Tokens Unavailable" in 0X instant
I have deployed both 0x-launch-kit-backend and 0x-launch-kit-frontend in my local system
I can able to create a sell order. It is listed in orders
I am running things in Ropsten Testnet
In 0X Instant ...
- 209
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465
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how to add my custom token to 0x protocol in testnet/mainnet
I am new to the 0x protocol. Is it possible to add custom token using 0x Portal DApp?. Share any example or document.
I have deployed my own exchange medium. it is running in http://localhost:3001
I ...
- 209
0
votes
1
answer
626
views
Converting Log Topics to int64 correctly in Go
I currently use the code below to extract the ERC721 Token ID from Transfer Event Logs:
txHash := newLog.TxHash.Hex()
hexString := common.BytesToAddress(newLog.Topics[3].Bytes()).Hex()
flowerNum, _ :=...
- 138
2
votes
1
answer
692
views
0x: Is it possible to fill an order from a smartcontract?
When I try to fill an order with funds from a contract I get the following generic error:
Error: Transaction:
0x1d3161cd7f318c3b0b28fc34b2c6bca0cbf4efdb3b11fcf7ec3af7c9adfd821b
exited with an ...
- 689
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126
views
ecSignHashAsync() giving INVALID_SIGNATURE Error
I'm trying to create an order in 0x but when I try to sign the order I get INVALID_SIGNATURE error?
I'm using 0x version 2
onSubmit = async (event) => {
event.preventDefault();
const { ...
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vote
0
answers
153
views
Is http://zrx.plus a legit site to claim my 0x exchange tokens? [closed]
Is http://zrx.plus/ a legit site to claim my 0x coins? What are some precautions to have before claiming my air drop?
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179
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call zeroEx.exchange.fillOrderAsync throw Error: Contract call failed (returned null)
I have created order ,but when I call fillOrderAsync encounter a error.
Contract call failed (returned null),Help me please!
fillOrder.callAsync { from: '0xe9c6f611639f1cb7b23af24a3519385f6b8d4c91',
...
- 23
1
vote
1
answer
570
views
what is the role of relayer in 0x protocol?
I understand that 0x protocol allows orders to be transmitted across off chain channel to reach large audience and potential buyers/sellers. However, I don't get what a Relayer is exactly.
- 866
2
votes
1
answer
166
views
Tracking orders on 0x network
How are the various 0x network order trackers sourcing on-chain settlement data?
My first assumption was that they were utilising the Etherscan API, however Etherscan have their own tracker, found at ...
- 121
6
votes
1
answer
992
views
Decentralized Exchanges with Market Orders
My goal is to make a market order (sell/buy) from a smart contract without a centralized app feeding in the order data. E.g. buy token X for 1 ETH at current market.
0x Project
So far I stumbled ...
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