Compact JavaScript library for interacting with Ankr's Advanced APIs.
# with npm
npm install @ankr.com/ankr.js
# with yarn
yarn add @ankr.com/ankr.jsimport { AnkrProvider } from '@ankr.com/ankr.js';
const provider = new AnkrProvider();
// or if you have a premium account
const provider = new AnkrProvider('YOUR_API_KEY');await provider.getNFTsByOwner({
blockchain: 'eth',
walletAddress: '0x0E11A192d574b342C51be9e306694C41547185DD',
});ankr.js supports the following chains at this time:
-
Ethereum:
"eth" -
BNB Smart Chain:
"bsc" -
Polygon:
"polygon" -
Fantom:
"fantom" -
Arbitrum:
"arbitrum" -
Avalanche:
"avalanche" -
Syscoin NEVM:
"syscoin" -
Optimism:
"optimism" -
Ethereum Goerli:
"eth_goerli" -
Avalanche Fuji:
"avalanche_fuji"
ankr.js supports the following methods:
getNFTsByOwnergetNFTMetadatagetNFTHoldersgetTokenHoldersgetAccountBalancegetTokenHoldersCountgetCurrenciesgetLogsgetBlocksgetTransactionsByHashgetTransactionsByAddressgetTokenPricegetTokenPriceHistory
Get logs matching the filter.
const logs = async () => {
return await provider.getLogs({
blockchain: 'eth',
fromBlock: 1181739,
toBlock: 1181739,
topics: [
[],
['0x000000000000000000000000feb92d30bf01ff9a1901666c5573532bfa07eeec'],
],
address: '0x3589d05a1ec4af9f65b0e5554e645707775ee43c',
decodeLogs: false,
});
};Query data about blocks within a specified range.
const blocks = async () => {
return await provider.getBlocks({
blockchain: 'bsc',
fromBlock: 100,
toBlock: 200,
});
};Query data about transaction(s) by the transaction hash.
const transactions = async () => {
return await provider.getTransactionsByHash({
transactionHash:
'0x82c13aaac6f0b6471afb94a3a64ae89d45baa3608ad397621dbb0d847f51196f',
decodeTxData: true,
});
};Get the coin and token balances of a wallet.
const balances = async () => {
return await provider.getAccountBalance({
blockchain: 'eth',
walletAddress: '0xfa9019df60d3c710d7d583b2d69e18d412257617',
});
};Get data about all the NFTs (collectibles) owned by a wallet.
const nfts = async () => {
return await provider.getNFTsByOwner({
blockchain: 'eth',
walletAddress: '0x0E11A192d574b342C51be9e306694C41547185DD',
filter: [
{ '0x700b4b9f39bb1faf5d0d16a20488f2733550bff4': [] },
{ '0xd8682bfa6918b0174f287b888e765b9a1b4dc9c3': ['8937'] },
],
});
};Get the list of token holders for a given contract address.
const tokenHolders = async () => {
return await provider.getTokenHolders({
blockchain: 'eth',
contractAddress: '0xdac17f958d2ee523a2206206994597c13d831ec7',
});
};Get current and historical data about the number of token holders for a given contract address.
const tokenHoldersCount = async () => {
return await provider.getTokenHoldersCount({
blockchain: 'eth',
contractAddress: '0xdac17f958d2ee523a2206206994597c13d831ec7',
});
};Get a list of supported currencies for a given blockchain.
const currencies = async () => {
return await provider.getCurrencies({ blockchain: 'fantom' });
};Shows price history for provided token on specific chain
You can provide only one param: fromTimestamp or toTimestamp. Timestamps and intervals must be provided in seconds.
If a fromTimestamp is not supplied, the interval will be applied in reverse from toTimestamp
if no toTimestamp => take by period & limit
fromTimestamp----|p1|----|p2|----|pN|---->
<----|pN|----|p2|----|p1|----toTimestamp
Defaults: defaultInterval - 24 hours maxInterval - 365 days maxLimit - 1000 (under testing) defaultLimit - 100 (under testing)
const prices = async () => {
return await provider.getTokenPriceHistory({
blockchain: "eth",
contractAddress: "0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2",
fromTimestamp: 1667195581,
interval: 86400, // 24h
limit: 337
});
};For now, Ankr is offering free access to these APIs with no request limits i.e. you don't need an API key at this time.
Later on, these APIs will become a part of Ankr Protocol's Premium Plan.
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