Questions tagged [api]
The api tag has no usage guidance.
69
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48
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Getting a 500 Error response when using estimate API endpoint
I am getting a 500 error when calling this endpoint. The safe exists. The transaction follows the API syntax.
curl -X 'POST' \
'https://safe-transaction-sepolia.safe.global/api/v1/safes/...
- 111
0
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1
answer
14
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Null data return from Infura API by using "eth_getLogs" method
I want to get the ETH transfer volume from wallet address via Infura API on Postman.
But there is NULL data inside the API result.
I expected there is data in result, but nothing now.
My URL:
POST ...
0
votes
1
answer
31
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Is there any API to transfer Crypto from my wallet to Metamask?
I am creating and iOS and Android app.
Is there any API which transfer crypto from my wallet to other users Metamask wallet ?
Also, API should tell if other user wallet address is valid or not.
Kindly,...
- 1
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1
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20
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API to know info about a contract address
Is there any API or database to get information about a contract about what dApp it belongs to or the type of dApp (DAO, Exchange, Game, Betting...).
I saw analyses of "X% of Ethereum contracts ...
- 101
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1
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14
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API for ETH to USD based on time and date
Does anyone know an API that will work based on any period of time. An API where I can put the year, month, day and time and it will give me the ETH to USD conversion at that moment?
- 1
1
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0
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17
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Request token names for millions of addresses in a dataset
I am making a dashboard with data about ethereum tokens and I need to extract token name for each smart contract in the database. But I have over 10 millions of records and I have found that etherscan ...
- 11
1
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0
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14
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I had been banned from Safe API [closed]
We are using the safe API for our Corporate wallets in Trustyfy.
During the last weeks, we have been testing the app and it seems that Safe has banned us on staging.trustyfy.com, what can we do?
Any ...
0
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1
answer
41
views
Getting price information using the Safe public API
The current public documentation includes an endpoint: /api/v1/safes/{SAFE_ADDRESS}/balances/usd which is meant to provide users with a fiat balance and conversion rate for every asset held in a safe, ...
0
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2
answers
188
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How to collect Contract Addresses via blockchain API?
Currently learning to interact with blockchain via Blockscout API to build personal database of contract addresses for future interactions. Despite trying different commands, I'm having trouble even ...
- 3
0
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0
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27
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Trouble publishing contract source code in Brownie: ConnectionError 403
I'm encountering an issue while attempting to deploy a contract using Brownie and publish its source code to Etherscan. The deployment itself is successful, but I'm unable to publish the contract ...
- 11
1
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0
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16
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How to you fetch all transactions ERC-20/ERC-721(swap, mint, burn) of a wallet?
I'm looking for an API that will give me exactly All transactions for a wallet, clearly broken down and labelled as Nft transfers, erc20 transfers, Nft purchases, token swaps etc. I've seen Moralis ...
- 683
1
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2
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820
views
Invalid basescan api key when attempting to verify NFT smart contract via foundry
I've successfully verified contracts on etherscan before, but this time I'm following the "Deploy with Foundry" guide on the Base docs: https://docs.base.org/guides/deploy-with-foundry/
I've ...
- 465
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0
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20
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how to find out about all the coins that are on the Ethereum network
how can I find out in real time all the tokens that are on the Ethereum network and get data on prices, volume, etc.
- 11
1
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0
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41
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how to get data about all tokens on the ethereum chain
I want to get data about all the tokens that are on the Ethereum chain without specifying the address of each token, how can I do this?
- 11
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1
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50
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historical Ethereum trading volume data at a minute interval
I want to access historical Ethereum trading volume and price data at a minute interval for the last six months, I found daily intervals but could not find for minute interval, any suggestion to find ...
- 3
1
vote
1
answer
147
views
Why did 0x swap API get deprecated and what is its substitute?
0x swap API was a great project that was under active development for several years. But recently it got deprecated and no longer kept up to date. I could not find any other substitute for it on the ...
- 464
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34
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Return the current ERC20 token holders and number of tokens held
Are there any free APIs available that can provide current data on ERC20 token holders and the number of tokens they hold ?
0
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30
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getting reverted with reason string 'SWAP_CALL_FAILED' while trying back sell unitymeta Token
const unityMeta = '0xca861e289f04cB9C67fd6b87ca7EAFa59192f164';
const WBNB = '0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c';
const params = {
sellToken: unityMeta,
buyToken: WBNB,
...
0
votes
1
answer
41
views
Safe Transaction API balance - returns 0 for fiatConversion for all tokens
I'm trying to fetch the safe address balance with the fiatConversion (USD) but it returns 0 for the all the tokens
https://safe-transaction-mainnet.safe.global/api/v1/safes/...
- 1
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0
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23
views
Is there an API for real time token values?
This is not a coding question so if this is the wrong place to ask it please advice where I can ask it.
I am looking for an API where I can get real time token values both on Sepolia and then also on ...
- 105
0
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2
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204
views
Batch Token Swap using 0x
I'm trying to make a telegram bot that sells all the tokens available on a wallet using Ox API. In order to automate the process with only command, I'm okay with adding the private key to the script.
...
2
votes
2
answers
42
views
How can this account address selled more erc20 token then it received?
I'm using the Alchemy API to retrieve all transactions for a specific address. When I run the API for this address on this particular token, I only receive two transactions. The first transaction ...
0
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0
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38
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0x Swap API Is there a recommended approach for handling these error responses uniformly?
Subject: Assistance Request for 0x Integration
Description:
Hello 0x Support Team,
I hope this message finds you well. I am currently in the process of integrating the 0x API into my project, and I've ...
- 1
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1
answer
58
views
What is Safe base API URL for Gnosis Chain?
What is Safe base API URL for Gnosis Chain?
Can't find any in the docs
Both
https://safe-transaction-xdai.safe.global
https://safe-transaction-gnosis.safe.global
don't work
1
vote
1
answer
54
views
Building Cryptocurrency Tracking system for monitoring stolen cryptocurrency transactions
When hackers steal tokens from an account, what they generally do is divert the flow of tokens via multiple proxy accounts making it complicated for the cyber-forensics department to track final ...
0
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1
answer
31
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How to find the origin of the token/crypto in the wallet?
For example,
Wallet 0x...A1 has 0.5 ETH. I want to know about the origin of 0.5 ETH.
Can I get that data from the Etherscan API (what endpoint?) or another solution?
- 1
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0
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385
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How to track ERC20 token creations on Ethereum blockhain with web3.js using Infura API?
I'm trying to fetch new ERC20 tokens from the blockchain transactions, my code is scanning the blocks and when I tried to log transactions it works well, (dumping bunch of logs). However I don't know ...
- 131
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1
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122
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Given token id of ERC1155, how to find out how many copies of it are there?
This may not be possible to implement in an easy fashion via the standard calls only to blockchain, therefore I'd consider third-party API providers such as Alchemy.com
I'm aware of, let's say, ...
- 49
2
votes
1
answer
332
views
How to get block and receipts data?
Is there a way to get the entire block information and transaction receipts within the block all in one function/method?
Irwing Tello
- 85
6
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5
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1k
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2
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2
answers
197
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Ethereum RPC API
I am building an analytics dash for wallets, which constantly tracks balance changes for wallets. I am using this small snippet to get the balance
(async () => {
const provider = new ethers....
- 109
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1
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128
views
verifying smart contract using etherscan api?
I wanted to verify my smart contract from polygonscan api but when I use this code I always get a Module Error :
"Error! Missing Or invalid Module name"
and this is the code I am using in ...
- 1
0
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1
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114
views
Get signer for Blockchain API without private Key
I have a ERC-20 token and I have a smart contract to but and sell the tokens . I have also created frontend and API for this. In the frontend I get signer from the wallet but to do it in the backend I ...
0
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1
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128
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How to query a contract function via Etherscan's API with uint256 input?
I'm trying to query this contract:
0x992678ad242230Dd795107Fee8B572E27083002A
and to get the "getglobalStakedTokensPerPeriod" (number 11)
with the unit456 of 1 (period 1)
I've tried to use ...
0
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1
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122
views
Is it possible to create an OpenSea collection using their API?
I want to create a collection in OpenSea but using a php backend instead of using their platform.
Is it possible to do this? I have been looking at their API documentation and I haven't been able to ...
- 825
1
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410
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How to get hash and signature of payload parameters using java
I want to use openSea's api, but I don't know how to get the hash and signature of this json object using java.
https://docs.opensea.io/reference/create-an-order
{
"parameters": {
"...
- 11
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139
views
Is private key sent out at any ocassion in a request to any RPC?
Do I understand correnctly that no RPC whether it be the standard Ethereum full node, or an RPC/REST API gateway, require a private key to be sent to it in the pure text? A private key is only used to ...
- 91
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2
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80
views
Can you setup a Chainlink function where the end user pays the LINK gas fee?
I was watching this video https://youtu.be/nKRZ1R2BC4Q. Chainlink functions look incredible. I have a Next.js app that I plan on integrating a Chainlink function. This Chainlink function will take the ...
- 373
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2
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103
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What's the best way to open a wallet on behalf of the user?
I work at a gaming company and we are developing a Play2Earn game.
We want to make the UX as seamlessly as possible so we would to avoid having the players to open a wallet to initially receive their ...
- 825
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120
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why Seaport Opeansea testnets API return "null" for signature?
I am trying to retrieve offers detail using seaport API for a given asset contract for a given token ID but it returns null for the signature field.
My understanding is that this signature is the ...
- 607
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1
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782
views
Error on WebSocket connection
i want to retrive data from this websocket api,
where is my code
import { WebSocketServer } from 'ws'
let socket = new WebSocketServer('wss://ws.blockchain.info/inv');
socket.on('error', console....
- 1
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1
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474
views
Binance smart chain node API provider without billing per websocket response
I'm unsure if this is the correct place to ask but I thought I'd try anyway.
Problem
I want to build a Node.js application using the Web3 library. The application should collect prices on liquidity ...
- 1
0
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1
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557
views
How can I get a list of all blocks proposed by a validator?
I would like to get all blocks proposed by a given validator. It looks like this functionality is not available in the standard Beaconchain API. Is there any other API available, probably by a a third ...
- 920
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1
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85
views
Does Moralis "Get NFTs by Wallet" API support ERC-1155?
I am using this service from Moralis to retrieve all the NFTs that a wallet has.
Does this support ERC-1155? I know these tokens are semi-fungible so they are not exactly NFTs, but I was hoping I can ...
- 825
0
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1
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76
views
Query pancake swap staking contract
I've been trying to find information on how to query pancakeswap's staking contract for some time now, and I've unfortunately been unsuccessful this far.
I was wondering if anyone would be so kind as ...
- 1
1
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1
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145
views
Is there a RPC API equivalent of fetching my Ethereum balance by using CURL in the cli?
Since metamask connects to a RPC server and passes in the eth address to make a api request. Is it possible to do the same functionality using CURL in the cli to do a basic balance inquiry of an ...
- 4,800
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2
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56
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I need an API that gets "input data"field from the blockchain
See image for the field I'm trying to get the data from, I can decode it myself, but I can't download the entire blockchain so how do I access the "input data" field? Would an API be the way ...
- 147
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474
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Missing personal api in geth JS consoole
so I installed geth. and launched the genesis terminal after initializing my genesis block. I needed to run the personal.newAccount() command, but the personal api is missing. My colleague had the ...
- 1
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2
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909
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How do you return the market cap of an ERC20 token?
After an ICO, a token contract has essentially converted ethers into a token through the minting process.
Once this token’s initial supply has been minted, how do you call the blockchain to return the ...
- 519
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667
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How to Get All NFTs Owned by an Address on my custom blockchain
on mumbai lets say, i can use the alchemy sdk, where i input the network name and then call the functions easilly,
however if the network is testnetwork with a chain id of 1234 and public RPC of : &...
- 78