No merchant-supplied description has been published for api.onesource.io. Browse its currently listed x402 offerings and observed catalog information.
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ERC20 allowance via allowance (eth_call) - how much a spender is approved to move from an owner's wallet
https://api.onesource.io/api/chain/allowanceLive wallet balance - native ETH plus up to 20 caller-supplied ERC20 tokens in one bounded RPC batch
https://api.onesource.io/api/chain/live-balanceBest-effort contract introspection via batched RPC - bytecode presence, token metadata, and ERC20-like/ERC721/ERC1155 classification
https://api.onesource.io/api/chain/contract/:addressFetch an Ethereum block header and transaction hashes by number, tag, or hex via eth_getBlockByNumber
https://api.onesource.io/api/chain/block/:numberDeepstate, the on-chain order-book exchange on Robinhood Chain. Order-book snapshot for a market, bids descending and asks ascending, with live resting size per level.
https://api.onesource.io/deepstate/v1/book/:bookENS resolve - turn a .eth name into an address, or an address into its primary .eth name, via eth_call on OneSource live Ethereum RPC
https://api.onesource.io/api/chain/ens/:inputDeepstate, the on-chain order-book exchange on Robinhood Chain. Rolling 24h / 7d / 30d volume and price change for a market.
https://api.onesource.io/deepstate/v1/stats/:bookDeepstate, the on-chain order-book exchange on Robinhood Chain. OHLCV candles for a market.
https://api.onesource.io/deepstate/v1/candles/:bookDeepstate, the on-chain order-book exchange on Robinhood Chain. Lists the markets this service serves with their token layout (base, quote, token0/token1, decimals).
https://api.onesource.io/deepstate/v1/marketsDeepstate, the on-chain order-book exchange on Robinhood Chain. Trade tape for a market, newest first.
https://api.onesource.io/deepstate/v1/trades/:bookFull Ethereum transaction details by hash via eth_getTransactionByHash - from, to, value, calldata, block
https://api.onesource.io/api/chain/tx/:hashQuery Ethereum contract event logs via eth_getLogs - filter by contract, topic, and block range
https://api.onesource.io/api/chain/eventsEthereum chain ID (EIP-155) via eth_chainId - confirm which chain a network is on
https://api.onesource.io/api/chain/chain-idTransaction receipt via eth_getTransactionReceipt - status, gas, and event logs for a mined Ethereum transaction
https://api.onesource.io/api/chain/receipt/:hashNFT metadata for ERC721 or ERC1155 tokens via eth_call, with IPFS, Arweave, data URI, and public HTTP(S) resolution
https://api.onesource.io/api/chain/nft-metadataEstimate the gas a transaction will consume via eth_estimateGas before signing it
https://api.onesource.io/api/chain/estimate-gasDeepstate, the on-chain order-book exchange on Robinhood Chain. Per-maker time-at-top, notional rested, fills, and maker rewards earned for a market (token varies by market; see /deepstate/v1/markets).
https://api.onesource.io/deepstate/v1/analytics/makersDeepstate, the on-chain order-book exchange on Robinhood Chain. Depth heatmap - resting order size by price level over time for a market.
https://api.onesource.io/deepstate/v1/analytics/depth-historyCheck if an Ethereum address is a contract via eth_getCode - returns deployed bytecode
https://api.onesource.io/api/chain/code/:addressSimulate a read-only Ethereum contract call via eth_call - no transaction sent
https://api.onesource.io/api/chain/callDeepstate, the on-chain order-book exchange on Robinhood Chain. Gas spent resting and cancelling orders for a market.
https://api.onesource.io/deepstate/v1/analytics/cost-to-quoteLook up the current owner of an ERC721 NFT by token_id via ownerOf (eth_call)
https://api.onesource.io/api/chain/nft-ownerERC1155 token balance via balanceOf (eth_call) - how many copies of a token_id a wallet holds
https://api.onesource.io/api/chain/erc1155-balanceThe Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Summary across reserve branches. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.
https://api.onesource.io/standard/v1/branches/summary