api.onesource.io

https://api.onesource.io/api/chain/allowance

ERC20 allowance via allowance (eth_call) - how much a spender is approved to move from an owner's wallet

• 0.003 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/block-number

Latest Ethereum block height - current chain tip via eth_blockNumber

• 0.001 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/block/:number

Fetch an Ethereum block header and transaction hashes by number, tag, or hex via eth_getBlockByNumber

• 0.003 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/chain-id

Ethereum chain ID (EIP-155) via eth_chainId - confirm which chain a network is on

• 0.001 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/code/:address

Check if an Ethereum address is a contract via eth_getCode - returns deployed bytecode

• 0.003 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/contract/:address

Best-effort contract introspection via batched RPC - bytecode presence, token metadata, and ERC20-like/ERC721/ERC1155 classification

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/ens/:input

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

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/erc1155-balance

ERC1155 token balance via balanceOf (eth_call) - how many copies of a token_id a wallet holds

• 0.003 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/erc20-balance

ERC20 token balance for any Ethereum wallet - USDC, USDT, DAI, or any token - via balanceOf (eth_call) on OneSource live Ethereum RPC

• 0.003 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/erc20-transfers

ERC20 Transfer logs via eth_getLogs - raw Transfer events for a token or wallet

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/erc721-tokens

List every ERC721 NFT token_id a wallet owns in a collection via tokenOfOwnerByIndex (eth_call)

• 0.008 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/events

Query Ethereum contract event logs via eth_getLogs - filter by contract, topic, and block range

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/live-balance

Live wallet balance - native ETH plus up to 20 caller-supplied ERC20 tokens in one bounded RPC batch

• 0.003 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/network-info

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)

• 0.001 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/nft-metadata

NFT metadata for ERC721 or ERC1155 tokens via eth_call, with IPFS, Arweave, data URI, and public HTTP(S) resolution

• 0.008 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/nft-owner

Look up the current owner of an ERC721 NFT by token_id via ownerOf (eth_call)

• 0.003 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/nonce/:address

Next transaction nonce for any Ethereum wallet via eth_getTransactionCount - how many txs it has sent

• 0.003 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/pending

Pending block - transactions not yet mined, via eth_getBlockByNumber("pending")

• 0.01 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/proxy/:address

Detect upgradeable proxy patterns (EIP-1967, UUPS, Transparent) via eth_getStorageAt - returns the implementation address behind a proxy

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/receipt/:hash

Transaction receipt via eth_getTransactionReceipt - status, gas, and event logs for a mined Ethereum transaction

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/storage

Read a raw storage slot from any Ethereum contract via eth_getStorageAt

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/total-supply

Total supply of an ERC20 or ERC721 token contract via totalSupply (eth_call)

• 0.003 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/tx/:hash

Full Ethereum transaction details by hash via eth_getTransactionByHash - from, to, value, calldata, block

• 0.008 USD Coin / request · eip155:8453

https://api.onesource.io/deepstate/v1/analytics/cost-to-quote

Deepstate, the on-chain order-book exchange on Robinhood Chain. Gas spent resting and cancelling orders for a market.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/deepstate/v1/analytics/depth-history

Deepstate, the on-chain order-book exchange on Robinhood Chain. Depth heatmap - resting order size by price level over time for a market.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/deepstate/v1/analytics/makers

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).

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/deepstate/v1/book/:book

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.

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/deepstate/v1/candles/:book

Deepstate, the on-chain order-book exchange on Robinhood Chain. OHLCV candles for a market.

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/deepstate/v1/markets

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).

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/deepstate/v1/stats/:book

Deepstate, the on-chain order-book exchange on Robinhood Chain. Rolling 24h / 7d / 30d volume and price change for a market.

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/deepstate/v1/trades/:book

Deepstate, the on-chain order-book exchange on Robinhood Chain. Trade tape for a market, newest first.

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/auctions/current

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Current Dutch-auction quotes for the daily STANDARD license auction and the ETH charter auction: price now, floor, last sale, and whether a computed price is available. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/auctions/days

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Per-day history for the license or charter Dutch auction: open price, floor, close price, and how much sold each day. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/auctions/sales

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Auction sale history, newest first. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/backing/current

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. A snapshot of reserve backing: vault ETH balances, other reserve-asset holdings, and ETH backing per circulating STANDARD token. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/backing/history

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Backing-ratio history, joined against circulating supply as of each snapshot block. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/branches/auction/live

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Live Branch license auction state, read straight from the chain.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/branches/doi

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Days of Issuance: how the current license price compares to the pace of new-Branch issuance.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/branches/license-cost

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Today's Branch license cost in ETH, compared against the charter auction's own price to show which path costs less. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/branches/summary

The 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.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/buybacks/readiness

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Whether the contraction vault's next buyback tick can fire, its ETH capacity, cooldown remaining, and recent executed ticks. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/candles

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. OHLC price candles for the STANDARD/ETH pool, priced in ETH per STANDARD.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/charters

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Charters, optionally filtered by owner. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/constants

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Chain-read protocol constants: base rate, epoch length, floors, and where each one was last read from.

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/decisions/branch

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Everything relevant to deciding whether to buy a Branch or license right now, bundled into one call.

• 0.05 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/decisions/charter

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Everything relevant to deciding whether to buy into a new charter right now, bundled into one call.

• 0.05 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/decisions/exit

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Everything relevant to deciding whether to exit a charter's branches right now, bundled into one call.

• 0.05 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/decisions/plan

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Simulates keep, selective, and aggressive Branch-expansion strategies over a horizon, seeded from this API's own live routes. A simulation for exploring tradeoffs, not a forecast.

• 0.05 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/dormancy

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Wallet last-activity records, flagged reportable once past the dormancy window.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/dormancy/bounties

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Wallets past their reportable dormancy window, ranked by the bounty an outside reporter could claim for flagging them. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/events

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Raw protocol event feed, newest first.

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/exit-pressure/current

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Current exit-pressure gauge across the reserve. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/exit-pressure/history

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Exit-pressure history. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/exit/fee-curve

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. How the reserve's exit fee changes across a range of withdrawal sizes, checked two ways: a live contract read and this service's own formula. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/exit/fee-forecast

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. A current-pace projection of the reserve's exit fee assuming no further withdrawals, day by day until it reaches the minimum rate. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/flow/hourly

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.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/governance/changes

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.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/holders/concentration

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. How concentrated Charter and Branch ownership is across wallets, including a standard concentration score and a genesis-versus-auction breakdown.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/issuance/runway

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Cumulative STANDARD issuance against its budget, the current issuance rate, and a current-pace projection of when the budget runs out. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/policy/current

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.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/policy/epochs

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Epoch history and boundaries. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/policy/outlook

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. A current-pace projection of the Central Bank's policy multiplier and issuance rate if the current epoch's net flow direction holds until close. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/pool

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.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/supply/current

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Latest supply ledger: cumulative minted and burned totals, circulating supply, and max supply. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/supply/history

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Supply ledger history. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/tax/schedule

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. The launch tax hook's current buy and sell rates, its decay schedule, and a projection of where the rate is headed. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/vaults/current

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Latest expansion and contraction vault WETH balances, plus protocol-owned liquidity once observed on-chain. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/standard/v1/vaults/history

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Vault snapshot history. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

• 0.02 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/call

Simulate a read-only Ethereum contract call via eth_call - no transaction sent

• 0.005 USD Coin / request · eip155:8453

https://api.onesource.io/api/chain/estimate-gas

Estimate the gas a transaction will consume via eth_estimateGas before signing it

• 0.004 USD Coin / request · eip155:8453