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X Network


The X Network brings ...

Quick facts

X Mainnet chainId137
X Testnet chainId80001
X Blockchain Explorer
Block time~1 second

Quickstart overview video

Supported endpoints


    • Get token balances for address. Return a list of all ERC20 and NFT token balances including ERC721 and ERC1155 along with their current spot prices.

    • Retrieve all transactions for address including their decoded log events. This endpoint does a deep-crawl of the blockchain to retrieve all kinds of transactions that references the address.

    • Get ERC20 token transfers for address alongwith historical token prices.

    • Return a paginated list of token holders contract_address as of any historical block height.

    • Return a paginated list of decoded log events emitted by a particular smart contract.

    • Return a paginated list of decoded log events with one or more topic hashes separated by a comma.
Go to Covalent's API Reference


X Gas token

X token is the native token of the X network. This is similar to Ether in Ethereum. To interact with the X network, X tokens are required to pay as gas fees. Covalent's responses automatically returns gas_* fields in the MATIC units.

Token mapping

Covalent maintains an on-chain real-time mapping of token addresses between Ethereum mainnet and the X chain. These addresses are used to reverse-lookup prices on X and also to return the right token logo urls.

Some example of mapped tokens:

TokenEthereum mainnetX mainnet
Uniswap UNI0x1f9840a85d5af5bf1d1762f925bdaddc4201f9840xb33eaad8d922b1083446dc23f610c2567fb5180f

Token prices

For tokens that have a mapping back to Ethereum mainnet, Covalent is able to return the mapped prices.