api.onesource.io
Two data families for AI agents: live Ethereum mainnet, Sepolia testnet, and Robinhood Chain RPC reads, plus Deepstate on-chain market data — order books, trades, candles, and analytics. Pay per call or use batch/session mode — USDC on Base via x402, or pathUSD/USDC.e on Tempo via MPP. No API key required to start; a flat-rate monthly subscription is also available.
TradingLiveeip155:8453Exactvia cdp
Calls · 30d
460↑ 100%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 18 snapshots so far.
$20.97
Verified settled volume
A floor: summed over 5,000 of up to 91,197 indexed settlements. The exact verified count is not computed for a wallet this size.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
472
Calls · 30d
Upstream's own call count for this endpoint, not ours.
272
Unique payers · 30d
Last called 2026-09-25 04:05Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3eaThe wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"meta": {
"network": "eip155:8453",
"endpoint": "/v1/book/:BOOK",
"cost_usdc": "0.005"
},
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 3600
}
],
"resource": {
"url": "https://api.onesource.io/deepstate/v1/book/:BOOK",
"mimeType": "application/json",
"description": "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."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"book": ":BOOK"
},
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"asks": [
{
"side": "ask",
"size": 32945.18,
"maker": "0x7C3e9F1a5B2d4E68A091c3D5b7F20e846A1c9D3f",
"price": 220.47924566,
"order_id": "0x2ac5822b00000000000000000000000000000007abaf8d6000000000fffbb08b",
"size_raw": "32945180000",
"nonce_raw": 4294684811,
"price_raw": "220.47924566",
"rest_index": 282484,
"sequence_raw": "4294684811",
"is_bid_token0": true,
"price_key_raw": "0x2ac5822b",
"queue_position": 0,
"rested_at_block": 52685011
}
],
"bids": [
{
"side": "bid",
"size": 3263.516552,
"maker": "0x884a1B2c3D4e5F60718293a4B5c6D7e8F90A1b2C",
"price": 216.48219249,
"order_id": "0x2ace848e00000000000000000000000000000000c2854f8800000000fffbb024",
"size_raw": "3263516552",
"nonce_raw": 4294684708,
"price_raw": "216.48219249",
"rest_index": 282587,
"sequence_raw": "4294684708",
"is_bid_token0": false,
"price_key_raw": "0x2ace848e",
"queue_position": 0,
"rested_at_block": 52685102
}
],
"book_id": "0xdf941c235503a5d2e67aee5dea00f2965f99421c0d034bd77f924c05c66bf399",
"summary": {
"book_id": "0xdf941c235503a5d2e67aee5dea00f2965f99421c0d034bd77f924c05c66bf399",
"mid_raw": "218.48071908",
"finality": "head",
"ask_count": 208,
"bid_count": 45,
"book_label": "NVDA/USDG",
"spread_bps": 182.9476,
"spread_raw": "3.99705317",
"order_count": 253,
"best_ask_raw": "220.47924566",
"best_bid_raw": "216.48219249",
"block_number": 52685677,
"top_ask_maker": "0x7C3e9F1a5B2d4E68A091c3D5b7F20e846A1c9D3f",
"top_bid_maker": "0x884a1B2c3D4e5F60718293a4B5c6D7e8F90A1b2C",
"market_session": "regular",
"top_ask_order_id": "0x2ac5822b00000000000000000000000000000007abaf8d6000000000fffbb08b",
"top_bid_order_id": "0x2ace848e00000000000000000000000000000000c2854f8800000000fffbb024",
"ask_depth_quote_raw": "6910233187",
"bid_depth_quote_raw": "1284770412",
"base_fee_per_gas_raw": "485000000",
"last_trade_price_raw": "216.48",
"ask_depth_1pct_quote_raw": "6910233187",
"bid_depth_1pct_quote_raw": "1284770412"
},
"finality": "head",
"book_slug": "NVDA-USDG",
"base_token": {
"symbol": "NVDA",
"address": "0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC",
"decimals": 18
},
"block_hash": "0x9f2b1c0d4e7a5b83c61f0d2a4e8b7c95d3a1f6e08b2c4d7a9e5f31b0c8d2a4e6",
"book_label": "NVDA/USDG",
"quote_token": {
"symbol": "USDG",
"address": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
"decimals": 6
},
"block_number": 52685677,
"market_session": "regular"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"pathParams": {
"type": "object",
"required": [
"book"
],
"properties": {
"book": {
"type": "string"
}
}
},
"queryParams": {
"type": "object",
"properties": {
"depth": {
"type": "integer",
"maximum": 500,
"minimum": 1
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"asks": {
"type": "array",
"items": {
"type": "object",
"properties": {
"side": {
"type": "string"
},
"size": {
"type": "number"
},
"maker": {
"type": "string"
},
"price": {
"type": "number"
},
"order_id": {
"type": "string"
},
"size_raw": {
"type": "string"
},
"nonce_raw": {
"type": "integer"
},
"price_raw": {
"type": "string"
},
"rest_index": {
"type": "integer"
},
"sequence_raw": {
"type": "string"
},
"is_bid_token0": {
"type": "boolean"
},
"price_key_raw": {
"type": "string"
},
"queue_position": {
"type": "integer"
},
"rested_at_block": {
"type": "integer"
}
}
}
},
"bids": {
"type": "array",
"items": {
"type": "object",
"properties": {
"side": {
"type": "string"
},
"size": {
"type": "number"
},
"maker": {
"type": "string"
},
"price": {
"type": "number"
},
"order_id": {
"type": "string"
},
"size_raw": {
"type": "string"
},
"nonce_raw": {
"type": "integer"
},
"price_raw": {
"type": "string"
},
"rest_index": {
"type": "integer"
},
"sequence_raw": {
"type": "string"
},
"is_bid_token0": {
"type": "boolean"
},
"price_key_raw": {
"type": "string"
},
"queue_position": {
"type": "integer"
},
"rested_at_block": {
"type": "integer"
}
}
}
},
"book_id": {
"type": "string"
},
"summary": {
"type": "object",
"properties": {
"book_id": {
"type": "string"
},
"mid_raw": {
"type": "string"
},
"finality": {
"type": "string"
},
"ask_count": {
"type": "integer"
},
"bid_count": {
"type": "integer"
},
"book_label": {
"type": "string"
},
"spread_bps": {
"type": "number"
},
"spread_raw": {
"type": "string"
},
"order_count": {
"type": "integer"
},
"best_ask_raw": {
"type": "string"
},
"best_bid_raw": {
"type": "string"
},
"block_number": {
"type": "integer"
},
"top_ask_maker": {
"type": "string"
},
"top_bid_maker": {
"type": "string"
},
"market_session": {
"type": "string"
},
"top_ask_order_id": {
"type": "string"
},
"top_bid_order_id": {
"type": "string"
},
"ask_depth_quote_raw": {
"type": "string"
},
"bid_depth_quote_raw": {
"type": "string"
},
"base_fee_per_gas_raw": {
"type": "string"
},
"last_trade_price_raw": {
"type": "string"
},
"ask_depth_1pct_quote_raw": {
"type": "string"
},
"bid_depth_1pct_quote_raw": {
"type": "string"
}
}
},
"finality": {
"type": "string"
},
"book_slug": {
"type": "string"
},
"base_token": {
"type": "object",
"properties": {
"symbol": {
"type": "string"
},
"address": {
"type": "string"
},
"decimals": {
"type": "integer"
}
}
},
"block_hash": {
"type": "string"
},
"book_label": {
"type": "string"
},
"quote_token": {
"type": "object",
"properties": {
"symbol": {
"type": "string"
},
"address": {
"type": "string"
},
"decimals": {
"type": "integer"
}
}
},
"block_number": {
"type": "integer"
},
"market_session": {
"type": "string"
}
},
"description": "Endpoint-specific response payload"
}
}
}
}
},
"routeTemplate": "/deepstate/v1/book/:book"
}
},
"x402Version": 2,
"payment_rails": [
{
"rail": "x402",
"chain": "eip155:8453",
"assets": [
"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
],
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea"
},
{
"rail": "mpp",
"chain": "tempo:4217",
"assets": [
"0x20c000000000000000000000b9537d11c60e8b50",
"0x20c0000000000000000000000000000000000000"
],
"recipient": "0x19B8e99079A5558ff4460357b0a78e14a7F600B7"
}
],
"api_key_subscription": {
"url": "https://onesource.io/rest-api#pricing",
"description": "Alternative to paying per call: a flat-rate monthly subscription authenticated with `Authorization: Bearer <key>`. No wallet, stablecoin, or on-chain settlement required. Use this if the client cannot custody a private key, if billing must be invoiced, or if per-call pricing costs more than a flat fee at your volume."
}
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.005USDC≈ $0.005 USD
on Base · exact scheme
Pay 0.005 USDC on Base to 0x52E2…1f3ea. The signed payment is good for 1 hour.
- Paid to
- 0x52E2…1f3ea
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 hour
- As published
- 5000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"credentialTypes": [
"authorization"
]
},
"payTo": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"recipient": "0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 3600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"book": "NVDA-USDG"
},
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"asks": [
{
"side": "ask",
"size": 32945.18,
"maker": "0x7C3e9F1a5B2d4E68A091c3D5b7F20e846A1c9D3f",
"price": 220.47924566,
"order_id": "0x2ac5822b00000000000000000000000000000007abaf8d6000000000fffbb08b",
"size_raw": "32945180000",
"nonce_raw": 4294684811,
"price_raw": "220.47924566",
"rest_index": 282484,
"sequence_raw": "4294684811",
"is_bid_token0": true,
"price_key_raw": "0x2ac5822b",
"queue_position": 0,
"rested_at_block": 52685011
}
],
"bids": [
{
"side": "bid",
"size": 3263.516552,
"maker": "0x884a1B2c3D4e5F60718293a4B5c6D7e8F90A1b2C",
"price": 216.48219249,
"order_id": "0x2ace848e00000000000000000000000000000000c2854f8800000000fffbb024",
"size_raw": "3263516552",
"nonce_raw": 4294684708,
"price_raw": "216.48219249",
"rest_index": 282587,
"sequence_raw": "4294684708",
"is_bid_token0": false,
"price_key_raw": "0x2ace848e",
"queue_position": 0,
"rested_at_block": 52685102
}
],
"book_id": "0xdf941c235503a5d2e67aee5dea00f2965f99421c0d034bd77f924c05c66bf399",
"summary": {
"book_id": "0xdf941c235503a5d2e67aee5dea00f2965f99421c0d034bd77f924c05c66bf399",
"mid_raw": "218.48071908",
"finality": "head",
"ask_count": 208,
"bid_count": 45,
"book_label": "NVDA/USDG",
"spread_bps": 182.9476,
"spread_raw": "3.99705317",
"order_count": 253,
"best_ask_raw": "220.47924566",
"best_bid_raw": "216.48219249",
"block_number": 52685677,
"top_ask_maker": "0x7C3e9F1a5B2d4E68A091c3D5b7F20e846A1c9D3f",
"top_bid_maker": "0x884a1B2c3D4e5F60718293a4B5c6D7e8F90A1b2C",
"market_session": "regular",
"top_ask_order_id": "0x2ac5822b00000000000000000000000000000007abaf8d6000000000fffbb08b",
"top_bid_order_id": "0x2ace848e00000000000000000000000000000000c2854f8800000000fffbb024",
"ask_depth_quote_raw": "6910233187",
"bid_depth_quote_raw": "1284770412",
"base_fee_per_gas_raw": "485000000",
"last_trade_price_raw": "216.48",
"ask_depth_1pct_quote_raw": "6910233187",
"bid_depth_1pct_quote_raw": "1284770412"
},
"finality": "head",
"book_slug": "NVDA-USDG",
"base_token": {
"symbol": "NVDA",
"address": "0xd0601CE157Db5bdC3162BbaC2a2C8aF5320D9EEC",
"decimals": 18
},
"block_hash": "0x9f2b1c0d4e7a5b83c61f0d2a4e8b7c95d3a1f6e08b2c4d7a9e5f31b0c8d2a4e6",
"book_label": "NVDA/USDG",
"quote_token": {
"symbol": "USDG",
"address": "0x5fc5360D0400a0Fd4f2af552ADD042D716F1d168",
"decimals": 6
},
"block_number": 52685677,
"market_session": "regular"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"pathParams": {
"type": "object",
"required": [
"book"
],
"properties": {
"book": {
"type": "string"
}
}
},
"queryParams": {
"type": "object",
"properties": {
"depth": {
"type": "integer",
"maximum": 500,
"minimum": 1
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"asks": {
"type": "array",
"items": {
"type": "object",
"properties": {
"side": {
"type": "string"
},
"size": {
"type": "number"
},
"maker": {
"type": "string"
},
"price": {
"type": "number"
},
"order_id": {
"type": "string"
},
"size_raw": {
"type": "string"
},
"nonce_raw": {
"type": "integer"
},
"price_raw": {
"type": "string"
},
"rest_index": {
"type": "integer"
},
"sequence_raw": {
"type": "string"
},
"is_bid_token0": {
"type": "boolean"
},
"price_key_raw": {
"type": "string"
},
"queue_position": {
"type": "integer"
},
"rested_at_block": {
"type": "integer"
}
}
}
},
"bids": {
"type": "array",
"items": {
"type": "object",
"properties": {
"side": {
"type": "string"
},
"size": {
"type": "number"
},
"maker": {
"type": "string"
},
"price": {
"type": "number"
},
"order_id": {
"type": "string"
},
"size_raw": {
"type": "string"
},
"nonce_raw": {
"type": "integer"
},
"price_raw": {
"type": "string"
},
"rest_index": {
"type": "integer"
},
"sequence_raw": {
"type": "string"
},
"is_bid_token0": {
"type": "boolean"
},
"price_key_raw": {
"type": "string"
},
"queue_position": {
"type": "integer"
},
"rested_at_block": {
"type": "integer"
}
}
}
},
"book_id": {
"type": "string"
},
"summary": {
"type": "object",
"properties": {
"book_id": {
"type": "string"
},
"mid_raw": {
"type": "string"
},
"finality": {
"type": "string"
},
"ask_count": {
"type": "integer"
},
"bid_count": {
"type": "integer"
},
"book_label": {
"type": "string"
},
"spread_bps": {
"type": "number"
},
"spread_raw": {
"type": "string"
},
"order_count": {
"type": "integer"
},
"best_ask_raw": {
"type": "string"
},
"best_bid_raw": {
"type": "string"
},
"block_number": {
"type": "integer"
},
"top_ask_maker": {
"type": "string"
},
"top_bid_maker": {
"type": "string"
},
"market_session": {
"type": "string"
},
"top_ask_order_id": {
"type": "string"
},
"top_bid_order_id": {
"type": "string"
},
"ask_depth_quote_raw": {
"type": "string"
},
"bid_depth_quote_raw": {
"type": "string"
},
"base_fee_per_gas_raw": {
"type": "string"
},
"last_trade_price_raw": {
"type": "string"
},
"ask_depth_1pct_quote_raw": {
"type": "string"
},
"bid_depth_1pct_quote_raw": {
"type": "string"
}
}
},
"finality": {
"type": "string"
},
"book_slug": {
"type": "string"
},
"base_token": {
"type": "object",
"properties": {
"symbol": {
"type": "string"
},
"address": {
"type": "string"
},
"decimals": {
"type": "integer"
}
}
},
"block_hash": {
"type": "string"
},
"book_label": {
"type": "string"
},
"quote_token": {
"type": "object",
"properties": {
"symbol": {
"type": "string"
},
"address": {
"type": "string"
},
"decimals": {
"type": "integer"
}
}
},
"block_number": {
"type": "integer"
},
"market_session": {
"type": "string"
}
},
"description": "Endpoint-specific response payload"
}
}
}
}
},
"routeTemplate": "/deepstate/v1/book/:book"
}
}Provenance
- Seen in the source catalog
- 2026-09-25 09:46Z
- Last indexed by Roundhouse
- 2026-09-25 11:30Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 11:15Z
- x402 version
- 2
- Max timeout
- 3600s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 18 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
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Using Roundhouse, look up the x402 service api.onesource.io and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=api.onesource.io' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://api.onesource.io/deepstate/v1/book/:book, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.