Questions tagged [0x]
The 0x tag has no usage guidance.
287
questions
0
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83
views
"COMPLETE_FILL_FAILED"error while using 0x Protocol V2 to exchange ERC1155 tokens
I am using 0x protocol V2 forwarder contract.
And it's fine to exchange ERC721 token through function marketBuyOrdersWithEth,
yet when I tried to exchange ERC1155 tokens,
it keeps showing the [error][...
- 1
0
votes
1
answer
59
views
Ether Lost During ERC 20 Conversion to 3X Short Bitcoin Token
TLDR: I tried to convert $500 USD worth of Eth (~0.181 eth) to an ERC20 token and only received $3 worth of the token. I should have received almost 3 million tokens but I only received 20,000. I ...
0
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1
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62
views
0x Quote API Call returning makerAmount equal 0
I am trying to run this API call: https://polygon.api.0x.org/swap/v1/quote?buyToken=0x2e1AD108fF1D8C782fcBbB89AAd783aC49586756&sellToken=0x580a84c73811e1839f75d86d75d88cca0c241ff4&sellAmount=...
- 103
0
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1
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133
views
Estimating gas revert transaction using 0x Protocol V4
Whenever I try to estimateGas from a ERC1155Order I got a transaction revert, using Polygon Mumbai with Alchemy.
let sellOrder = new ERC1155Order({
direction: TradeDirection.SellNFT,
maker: ...
- 3
0
votes
1
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74
views
Cant call swap/v1/tokens
i can't call api swap/v1/tokens
I see "cross-origin" err.
so what should i do?
0
votes
1
answer
61
views
"Error: out of gas" error appears for some prices
I have deployed a local instance of 0X API with the environment variables:
CHAIN_ID=250
ETHEREUM_RPC_URL=https://rpc.ftm.tools
When trying to get the prices it sometimes works well for some prices ...
- 1
0
votes
1
answer
87
views
When requesting a quote through 0x API's /swap/v1/quote endpoint, what do I use to batch fill multiple quotes?
I see a function in v3 for limit orders called batchFillOrKill but how do achieve this using the quote endpoint? Is there a function I am just not finding or would I have to code my own logic in my ...
0
votes
1
answer
138
views
Reverted transaction from quote?
Im receiving quotes from the 0x API (with IntentOnFilling and takerAddress specified). Can someone help me with debugging this transaction that was reverted by the exchangeProxy.
Quote request was:
...
- 105
1
vote
2
answers
132
views
Swapping tokens when value of sellToken is unknown
I want to swap from 0xdb25f211ab05b1c97d595516f45794528a807ad8(EURS) to 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48 (USDC) but the sellAmount is not known upfront and is only known during contract ...
- 156
0
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1
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84
views
How to config the 0x-api v4 environment variable ORDER_WATCHER_URL?
I'm tring to deploy 0x-api locally, when I use the api /sra/v4/order to create an order, I got the 500 Internal Server Error, the error log is :
[1644904993870] INFO (26691 on DESKTOP-VKM9D90): ...
1
vote
1
answer
164
views
Use 0x api to swap tokens with PHP
I'd like to use the 0x api to swap tokens given on certains conditions included in a PHP file.
However, it seems 0x api/ecosystem revolves around JS since it has lots of utilities and needs npm to run....
- 11
0
votes
1
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89
views
0x fail on Optimism network
Recently, I try to swap token with 0x on Optimism network.
But some transactions were fail. At first, I thought it was due to insufficient estimatedGas. But it not work when I set a larger number.
I'...
- 1
0
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1
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83
views
API 0x can't swap and swap back ? i got many to fail
there is not support ?
i sent them 1 transaction from smart contact
fillQuote(
token1,
token2,
uint256(_sellAmount),
address(_allowanceTarget),
payable(_to),
...
0
votes
1
answer
167
views
Is it required to have an API-Key to do trading with the 0x API (Swap/Quote)?
I am wondering if it's possible to use the 0x API Swap/Quote endpoint and further signing the transaction to the blockchain without an api-key for the API requests?
Are there any limitations if I do ...
- 105
0
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1
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66
views
0x API returning error for getting Fantom quote
The call is this one and fails with a "Server Error"
https://fantom.api.0x.org/swap/v1/quote?&buyToken=0x04068da6c83afcfa0e13ba15a6696662335d5b75&sellToken=...
- 119
0
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1
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128
views
how to solve this problem
https://api.0x.org/swap/v1/price?sellToken=WETH&buyToken=WNXM&sellAmount=1000000000000000000
{"code":100,"reason":"Validation Failed","validationErrors":...
0
votes
1
answer
48
views
Quote 0x API always return Cheeswap: K and code 105
I am making this call to get quote and estimated gas:
https://bsc.api.0x.org/swap/v1/quote?sellToken=0x2a9718deff471f3bb91fa0eceab14154f150a385&buyToken=0xe9e7cea3dedca5984780bafc599bd69add087d56&...
0
votes
1
answer
69
views
0x Cannot post limit order on ropsten (404 error)
Endpoint - https://ropsten.api.0x.org/sra/v4/order doesn't work anymore (404 error).
Faced with this problem only on ropsten.
Mainnet works fine.
Did 0x change ropsten endpoints?
0
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1
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78
views
Wanted to test the 0x protocol contracts on a testnet but fail to see how to get them deployed
I start here https://github.com/0xProject/protocol and look my way around. From my understanding, if I'm on the right track, I can start with ganache and get test cases and so forth going. Then ...
0
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1
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157
views
random WalletExecuteDelegateCallFailedError error with 0x quote api in polygon network
I am calling the quote api in polygon network, and random received the below error response but sometime the same call just works. Can someone please help here.
request:
The Entire API request:
https:/...
- 3
0
votes
1
answer
196
views
Issue with 0x quote api
I am calling the quote api, and when passing its response to ethereum.request() for making a transaction, MetaMask pops up a very high tx fees- 1.89 BNB! which is way too high fees for this basic swap ...
- 85
4
votes
2
answers
183
views
0x Handling of tokens with less than 18 decimals
I am trying to create a sell limit order with an 18 decimal ERC20 token as makerToken (makerAmount = 1.5) and a 6 decimal ERC20 token as takerToken (takerAmount 1.1). The order is created but ...
- 141
0
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1
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377
views
Execution reverted on every 0x API transaction Swap on BSC in python
I try to make a swap on BSC using 0x API. All my transaction FAILS (Warning! Error encountered during contract execution [execution reverted]).
There shouldn't be any problems with allowance, I can ...
- 3
0
votes
1
answer
23
views
Any way to disable time sensitive parameters thru the 0x api to get consistent encoded tx data?
Friends, I have noticed that the encoded tx data for any given params you get from the 0x api changes second to second. I noticed it does this even when I hardcode the same salt. I assume this is ...
0
votes
1
answer
43
views
Allowing a smart contract to receive a swapped token
I'm currently building a dApp on the Polygon network, and I'd like my users to be able to initiate a swap to USDC through 0x, which in turn gets received by a function on the smart contract. Is this ...
- 1
0
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1
answer
59
views
what happened in this transaction?
ID 0xbb14faf85f1b0bff9b31af11d11b045dd19c244046028ba2d62ece10f974425c
basically I had entered an eth-USDC swap through matcha. I even had the USDC in my wallet for like 5 seconds but then I ended up ...
- 1
0
votes
2
answers
175
views
Signing a 0x limit order as a taker without UI
I have been using the @0x/contract-wrappers to sign a limit order as the taker but I can't find a way to configure a provider that can accept a private key to sign the order rather than using Metamask ...
0
votes
1
answer
298
views
How to add transaction deadline?
I am using web3 to make transactions but I am stuck on how can I add transaction deadlines in
web3.eth.sendTransaction function.
I am using 0x API for getting the swap quote.
My code :-
await web3.eth....
- 74
0
votes
1
answer
40
views
Can you run all 0x.js libs from a browser environment?
We're in a Next.js app and attempting to use the client to generate signed messages from Orders. However, we're getting compile errors where it seems as though the lib requires the filesystem
Module ...
- 103
0
votes
1
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455
views
INSUFFICIENT_ASSET_LIQUIDITY response for the sell amount when calling the Polygon API
When trying to make an api call to Ox through Polygon, I am receiving the following error:
{ "code": 100, "reason": "Validation Failed", "validationErrors": [ { ...
- 1
0
votes
1
answer
51
views
Transaction failing due to "NotImplementedError"
https://dashboard.tenderly.co/tx/polygon/0x3a6bce4a7c27ce4ad6dc449664f83278d7316c5f189043459f717af2cfe22673/debugger?trace=0.2
I get a reverted transaction using the 0x API however the error message ...
- 119
0
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1
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233
views
How do i get my Mac to give me permission to install Yarn and npx in terminal?
I've done research on how to get permission but it doesn't seem to work. At first I tried on my mac book pro, but after trying for hours I still couldn't seem to get it to work so I switched to my Mac ...
0
votes
1
answer
61
views
Unable to download build 0x project
I'm trying to follow the instructions on 0x API project, but I see the following message when trying to install dependencies:
node-pre-gyp http GET https://0x-neon-router.s3.amazonaws.com/0.3.1/node-...
- 1
0
votes
1
answer
80
views
0x Pricing Issues
When using the 0x API to price USDC->DAI on ETH and Polygon, I am getting weird outputs.
When I price the slippage on 1mm USDC I see 0bps slippage at ETH and +94bps slippage at Polygon. When ...
- 1
0
votes
2
answers
340
views
How to bubble up meaningful 0x contract revert data?
I'm fairly new to solidity so thanks in advance for your patience with this question.
I'm trying to implement a contract that uses the following line from the 0x sample provided here: https://github....
- 101
0
votes
1
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73
views
Add Safemoon Swap as liquidity source
We want to integrate safemoon swap as liquidity source – can it be added for 0x API on BSC?
Factory contract: https://bscscan.com/address/0x86a859773cf6df9c8117f20b0b950ada84e7644d
- 1
0
votes
1
answer
143
views
Does 0x have websocket api on polygon now?
How can I get 0x limit orders list? Does 0x have websocket api on Polygon now? As I know before,0x Websocket API only supportted mainnet.
- 1
1
vote
1
answer
46
views
Help regarding website based javascript using 0x for order trades
Hey I apologize in advance, I am very new to a lot of the development regarding this subject. I have written my own erc20 token and was trying to find a way to easily trade it. I am aware of the many ...
- 11
1
vote
1
answer
345
views
0x bsc api returning the wrong path for Pancakeswap router v2
I query the api for bsc
https://bsc.api.0x.org/swap/v1/quote?buyToken=0x368ce786ea190f32439074e8d22e12ecb718b44c&sellToken=0xe9e7cea3dedca5984780bafc599bd69add087d56&sellAmount=...
- 11
1
vote
1
answer
118
views
Enterprise 0x.org API access
We are currently using 0x API for data analysis, but we are getting blocked by the rate limiter many times.
I tried to search for 0x Enterprise API Access but couldn't find anything...
Does anyone ...
- 11
0
votes
1
answer
150
views
0x transactions failing due to out of gas for swaps consistently
My transactions to swap keep running out of gas and I'm not entirely sure what I'm doing wrong here. I'm generating a quote like below (which is actually a snippet from a 0x repository)
const response ...
- 1
0
votes
1
answer
168
views
Where is correct information for 0x implementation on Polygon?
We are trying to use 0x protocol for trading ERC721 on Polygon. And I am kind of lost where is correct information. Could someone point to the right direction.
Contract addresses: where is correct ...
- 1
1
vote
1
answer
174
views
MultiHop swap buying less than specified `buyAmount` without reverting
While using the 0xAPI I noticed that when executing "MultiHop" swaps against my local mainnet fork it sometimes obtains less than the specified buyAmount without reverting.
Is this expected ...
- 439
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1
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159
views
0x API Tokens Interface (Deprecated?) and Swap Quote
The 0x API docs say that the token interface is deprecated, but it seems that it's required to know which tokens are supported. For instance, I cannot send any Token symbol to the quote API, it will ...
- 13
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1
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156
views
For swapping should i approve 0x contract address or address from function 'getTransformerDeployer' or 'getTransformWallet'
I am building a middleware contract to interact with 0x protocol. so for swapping tokens
should I approve(erc20 function) directly 0x address for transferring asset or the address from the function '...
0
votes
1
answer
166
views
Transaction revered when fillOrder on 0x protocol
I am trying to write an app that sells NFT using 0x protocol smart contracts and test it on Mumbai Polygon testnet,
Deployed my test ER721 contract and test ERC20 contract. Got 0x contract addresses ...
- 1
0
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1
answer
445
views
Is 0x Api perform "Dex aggregator" Swaps internally like 1Inch exchange?
Is 0x Api performing "Dex aggregator" Swaps internally like 1Inch exchange?
- 1
0
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1
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65
views
0x - Internal error on order API call
I'm receiving an internal error when attempting to place an order on the Avalanche chain.
Url: https://api.0x.org/orderbook/v1/order
Error:
{
"code": 100,
"reason": "...
- 1
0
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1
answer
357
views
can anyone explain how 0x protocol swap tokens on contract level?
I am building a middleware contract to interact with 0x. but I can't find which function to use in the 0x contract. could anyone help me?
can anyone explain how 0x swap tokens on contract level?
0
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1
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98
views
I am trying to swap Eth to Dai using 0x-Api on on ropsten but my transaction reverted by EVM
Transaction hash: 0x9e4cd796a7f3a299ef412f8268e839e8a1600e01140bd2258d8a9d12ee5bf642
Transaction request we are sending to swap:
{
allowanceTarget: "0xdef1c0ded9bec7f1a1670819833240f027b25eff&...
- 1