Crypto Pair Price
Price of one crypto in terms of another -- BTC/USD, ETH/BTC, SOL/ETH, or any pair from 21+ major coins by ticker. Handles crypto/crypto pairs (e.g. how many ETH is 1 BTC worth) as well as a plain USD quote. Returns each leg's own 24h % change vs USD rather than a synthetic ratio change. From CoinGecko. $0.01/call.
The wallet the 402 directs payment to. Its full payment record is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
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.
Recent payments · which agents last used it
Every indexed settlement paid to this service’s wallet, newest first. The index does not record which endpoint a payment was for, so if this wallet serves more than one endpoint, the rows include payments for the others. Paged up to the newest 5,000; the full history is on the merchant page.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying: a price here is a claim, not a quote.
Pay 0.01 USDC on Base to 0xe418…768e0. The signed payment is good for 5 minutes.
- Paid to
- 0xe418…768e0
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000 smallest units
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- GJ1fu5…bq33b
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xe4181c7de066959bcca010525304ba68a84768e0",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"payTo": "GJ1fu5pi1WaMHWy9nR1Fh67FEtrWXKrY2Ud6fdGbq33b",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"base": "BTC",
"quote": "USD"
}
},
"output": {
"type": "json",
"example": {
"base": "BTC",
"note": "No combined ratio 24h-change is provided -- combining two independently-cached USD legs into a synthetic ratio change was unreliable and dropped rather than shipped inaccurate. Use base_change_24h_pct_usd/quote_change_24h_pct_usd instead.",
"pair": "BTC/ETH",
"as_of": "2026-07-31T03:43:30.000Z",
"price": 33.7577077484,
"quote": "ETH",
"source": "coingecko",
"base_info": {
"name": "Bitcoin",
"coingecko_id": "bitcoin",
"market_cap_rank": 1
},
"quote_info": {
"name": "Ethereum",
"coingecko_id": "ethereum",
"market_cap_rank": 2
},
"base_change_24h_pct_usd": 0.32,
"quote_change_24h_pct_usd": -0.6
}
}
},
"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": [
"base",
"quote"
],
"properties": {
"base": {
"type": "string",
"description": "Base coin ticker, e.g. BTC, ETH, SOL"
},
"quote": {
"type": "string",
"description": "Quote coin ticker, e.g. USD, ETH, BTC"
}
}
},
"queryParams": {
"type": "object",
"properties": {}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
},
"routeTemplate": "/crypto-pair/:base/:quote"
},
"builder-code": {
"info": {
"a": "bc_vyd5u8m3"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
}Provenance
- Seen in the source catalog
- 2026-11-09 15:59Z
- Last indexed by Roundhouse
- 2026-11-15 18:20Z
- Last enriched (probe, favicon, geo)
- 2026-10-09 20:46Z
- x402 version
- 2
- Max timeout
- 300s
- 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. 5 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Crypto Pair Price 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=Crypto%20Pair%20Price' 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://www.x402financialdata.com/crypto-pair/:base/:quote, 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. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.