api.onesource.io
70 x402 APIs served from api.onesource.io
Every listing from api.onesource.io that ToolVet tracks. Each one is called on a schedule without paying and scored out of 100.
At a glance
- Listings
- 70 x402 APIs
- Passing at the latest check
- 70 of 70
- Uptime, 30 days
- 99.91% on average across 70 listings
- Price
- $0.001 to $0.05 per call
- Trust score
- 82 to 90, median 87
- Paying wallets, 30 days
- 431 on its busiest listing
- Verified owner
- None
- Security findings
- None found
- Listed since
- 11 Oct 2026
The x402 Bazaar counts paying wallets per listing. A wallet that paid two listings counts twice. So the Bazaar saw between 431 and 9,167 different wallets paying api.onesource.io in 30 days.
All 70 listings
Ranked by trust score.
- 90trustChain Erc20 Transfersapi.onesource.io
ERC20 Transfer logs via eth_getLogs - raw Transfer events for a token or wallet
$0.005per call on Base100% uptime, 187 ms, 308 paying agentsPassing, checked 3 h ago - 90trustChain Ensapi.onesource.io
ENS resolve - turn a .eth name into an address, or an address into its primary .eth name, via eth_call on OneSource live Ethereum RPC
$0.005per call on Base100% uptime, 139 ms, 282 paying agentsPassing, checked 3 h ago - 90trustChain Txapi.onesource.io
Full Ethereum transaction details by hash via eth_getTransactionByHash - from, to, value, calldata, block
$0.008per call on Base100% uptime, 161 ms, 217 paying agentsPassing, checked 4 h ago - 90trustChain Erc721 Tokensapi.onesource.io
List every ERC721 NFT token_id a wallet owns in a collection via tokenOfOwnerByIndex (eth_call)
$0.008per call on Base100% uptime, 129 ms, 171 paying agentsPassing, checked 3 h ago - 90trustAnalytics Makersapi.onesource.io
Deepstate, 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).
$0.02per call on Base100% uptime, 151 ms, 171 paying agentsPassing, checked 3 h ago - 90trustChain Codeapi.onesource.io
Check if an Ethereum address is a contract via eth_getCode - returns deployed bytecode
$0.003per call on Base100% uptime, 149 ms, 164 paying agentsPassing, checked 3 h ago - 90trustChain Storageapi.onesource.io
Read a raw storage slot from any Ethereum contract via eth_getStorageAt
$0.005per call on Base100% uptime, 131 ms, 86 paying agentsPassing, checked 3 h ago - 89trustChain Estimate Gasapi.onesource.io
Estimate the gas a transaction will consume via eth_estimateGas before signing it
$0.004per call on Base97.0% uptime, 160 ms, 178 paying agentsPassing, checked 4 h ago - 89trustStandard Poolapi.onesource.io
The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Latest AMM pool state: price, tick, liquidity, reserves. reserve_eth_raw and reserve_std_raw are 18-decimal token amounts; divide them by 1e18. sqrt_price_x96_raw is Q64.96, and liquidity_raw is Uniswap liquidity rather than a token amount.
$0.02per call on Base100% uptime, 139 ms, 78 paying agentsPassing, checked 3 h ago - 89trustPolicy Currentapi.onesource.io
The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. The current epoch's regime (expansion or contraction), signal, policy multiplier, net ETH flow and STANDARD issuance, plus time to epoch close. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.
$0.02per call on Base100% uptime, 212 ms, 77 paying agentsPassing, checked 3 h ago - 88trustFlow Hourlyapi.onesource.io
The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Hourly ETH in/out and net flow through the STANDARD/ETH pool. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.
$0.02per call on Base100% uptime, 138 ms, 56 paying agentsPassing, checked 3 h ago - 88trustChain Pendingapi.onesource.io
Pending block - transactions not yet mined, via eth_getBlockByNumber("pending")
$0.01per call on Base100% uptime, 130 ms, 54 paying agentsPassing, checked 4 h ago - 88trustGovernance Changesapi.onesource.io
The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Governance and parameter-change history, queued changes awaiting effect, feature switches, and guardian pause state. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.
$0.02per call on Base100% uptime, 131 ms, 43 paying agentsPassing, checked 3 h ago - 87trustChain Erc20 Balanceapi.onesource.io
ERC20 token balance for any Ethereum wallet - USDC, USDT, DAI, or any token - via balanceOf (eth_call) on OneSource live Ethereum RPC
$0.003per call on Base100% uptime, 545 ms, 431 paying agentsPassing, checked 2 h ago - 87trustChain Block Numberapi.onesource.io
Latest Ethereum block height - current chain tip via eth_blockNumber
$0.001per call on Base100% uptime, 489 ms, 395 paying agentsPassing, checked 3 h ago - 87trustChain Live Balanceapi.onesource.io
Live wallet balance - native ETH plus up to 20 caller-supplied ERC20 tokens in one bounded RPC batch
$0.003per call on Base100% uptime, 491 ms, 375 paying agentsPassing, checked 4 h ago - 87trustChain Contractapi.onesource.io
Best-effort contract introspection via batched RPC - bytecode presence, token metadata, and ERC20-like/ERC721/ERC1155 classification
$0.005per call on Base100% uptime, 522 ms, 313 paying agentsPassing, checked 4 h ago - 87trustChain Blockapi.onesource.io
Fetch an Ethereum block header and transaction hashes by number, tag, or hex via eth_getBlockByNumber
$0.003per call on Base100% uptime, 461 ms, 294 paying agentsPassing, checked 3 h ago - 87trustChain Total Supplyapi.onesource.io
Total supply of an ERC20 or ERC721 token contract via totalSupply (eth_call)
$0.003per call on Base100% uptime, 554 ms, 288 paying agentsPassing, checked 4 h ago - 87trustChain Nonceapi.onesource.io
Next transaction nonce for any Ethereum wallet via eth_getTransactionCount - how many txs it has sent
$0.003per call on Base100% uptime, 466 ms, 279 paying agentsPassing, checked 3 h ago - 87trustDeepstate Bookapi.onesource.io
Deepstate, 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.
$0.005per call on Base100% uptime, 638 ms, 263 paying agentsPassing, checked 4 h ago - 87trustChain Network Infoapi.onesource.io
EVM network info - chain ID, block height, gas price, chain head age, and chain characteristics in one batched RPC call (eth_chainId + eth_blockNumber + eth_gasPrice + latest block header)
$0.001per call on Base100% uptime, 457 ms, 255 paying agentsPassing, checked 3 h ago - 87trustDeepstate Statsapi.onesource.io
Deepstate, the on-chain order-book exchange on Robinhood Chain. Rolling 24h / 7d / 30d volume and price change for a market.
$0.005per call on Base100% uptime, 502 ms, 249 paying agentsPassing, checked 4 h ago - 87trustDeepstate Marketsapi.onesource.io
Deepstate, the on-chain order-book exchange on Robinhood Chain. Lists the markets this service serves with their token layout (base, quote, token0/token1, decimals).
$0.005per call on Base100% uptime, 472 ms, 249 paying agentsPassing, checked 3 h ago - 87trustDeepstate Tradesapi.onesource.io
Deepstate, the on-chain order-book exchange on Robinhood Chain. Trade tape for a market, newest first.
$0.005per call on Base100% uptime, 500 ms, 233 paying agentsPassing, checked 3 h ago - 87trustChain Eventsapi.onesource.io
Query Ethereum contract event logs via eth_getLogs - filter by contract, topic, and block range
$0.005per call on Base100% uptime, 478 ms, 218 paying agentsPassing, checked 3 h ago - 87trustChain Chain Idapi.onesource.io
Ethereum chain ID (EIP-155) via eth_chainId - confirm which chain a network is on
$0.001per call on Base100% uptime, 547 ms, 191 paying agentsPassing, checked 4 h ago - 87trustChain Receiptapi.onesource.io
Transaction receipt via eth_getTransactionReceipt - status, gas, and event logs for a mined Ethereum transaction
$0.005per call on Base100% uptime, 473 ms, 183 paying agentsPassing, checked 3 h ago - 87trustChain Nft Metadataapi.onesource.io
NFT metadata for ERC721 or ERC1155 tokens via eth_call, with IPFS, Arweave, data URI, and public HTTP(S) resolution
$0.008per call on Base100% uptime, 483 ms, 177 paying agentsPassing, checked 3 h ago - 87trustChain Allowanceapi.onesource.io
ERC20 allowance via allowance (eth_call) - how much a spender is approved to move from an owner's wallet
$0.003per call on Base100% uptime, 512 ms, 175 paying agentsPassing, checked 3 h ago
How these numbers are made
Each listing is called on a schedule without paying. Listings with usage or a verified owner are checked about every 30 minutes, others about every 6 hours. Uptime is the share of passing checks over 30 days, averaged across this provider's listings. Trust scores follow the published method. The figures on this page can be a few minutes behind the latest checks, and listings hidden after review aren't counted.