Onchain Query API
Spot USD price for any crypto asset. Accepts a ticker symbol (eth, btc, sol), a CoinGecko id (ethereum), or an EVM token contract address. Returns the USD price plus 24h change, with market cap for listed assets, or liquidity, 24h volume and the top DEX pair for contract addresses. Cached 60 seconds so repeated calls in one agent workflow stay consistent with each other.
TradingLiveeip155:8453Exactvia cdp
Crypto-pricePrice-feedMarket-dataCoingeckoUsd
Calls · 30d
6↓ 8.9%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$10.61
Verified settled volume
1,431 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
Listed price
As published in the catalog. Always read the live 402 before paying.
6
Calls · 30d
Upstream's own call count for this endpoint, not ours.
4
Unique payers · 30d
Last called 2026-09-09 16:20Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x058D0Cc5CC97e61e8A9f38D6d6365bce525921B2The 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.
{
"trust": "https://cyberwarex.com/trust",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x058D0Cc5CC97e61e8A9f38D6d6365bce525921B2",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"catalog": {
"docs": "https://cyberwarex.com/llms.txt",
"services": "https://cyberwarex.com/.well-known/x402"
},
"resource": {
"url": "https://chain.cyberwarex.com/price",
"tags": [
"crypto-price",
"price-feed",
"market-data",
"coingecko",
"usd"
],
"iconUrl": "https://cyberwarex.com/assets/icon.png",
"mimeType": "application/json",
"description": "Spot USD price for any crypto asset. Accepts a ticker symbol (eth, btc, sol), a CoinGecko id (ethereum), or an EVM token contract address. Returns the USD price plus 24h change, with market cap for listed assets, or liquidity, 24h volume and the top DEX pair for contract addresses. Cached 60 seconds so repeated calls in one agent workflow stay consistent with each other.",
"serviceName": "Onchain Query API"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"query": "eth"
}
},
"output": {
"type": "json",
"example": {
"query": "eth",
"source": "coingecko",
"price_usd": 3194.51,
"coingecko_id": "ethereum",
"change_24h_pct": -1.87,
"market_cap_usd": 385204119883
}
}
},
"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"
},
"queryParams": {
"type": "object",
"required": [
"query"
],
"properties": {
"chain": {
"enum": [
"base",
"ethereum",
"arbitrum",
"optimism",
"polygon"
],
"type": "string",
"default": "base",
"description": "EVM chain to query."
},
"query": {
"type": "string",
"description": "Ticker symbol, CoinGecko id, or 0x token contract address."
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"query": {
"type": "string"
},
"source": {
"type": "string",
"description": "coingecko or dexscreener."
},
"top_pair": {
"type": "object",
"description": "Only for contract-address queries."
},
"price_usd": {
"type": [
"number",
"null"
]
},
"coingecko_id": {
"type": "string"
},
"liquidity_usd": {
"type": "number",
"description": "Only for contract-address queries."
},
"change_24h_pct": {
"type": [
"number",
"null"
]
},
"market_cap_usd": {
"type": [
"number",
"null"
]
},
"volume_24h_usd": {
"type": "number",
"description": "Only for contract-address queries."
}
}
}
}
}
}
}
}
},
"free_trial": {
"how": "repeat this exact request with header `X-Free-Trial: 1` (or `?free_trial=1`) and no payment; you get the real result",
"terms": "per client IP per UTC day; automated monitors/crawlers/indexers are excluded; shared daily pool per service",
"calls_per_ip_per_day": 1
},
"quickstart": {
"docs": "https://cyberwarex.com/llms.txt",
"node": "npm i x402-fetch viem | import {wrapFetchWithPayment} from 'x402-fetch'; import {privateKeyToAccount} from 'viem/accounts'; const f = wrapFetchWithPayment(fetch, privateKeyToAccount(PK)); const r = await f(URL)",
"python": "pip install x402 eth-account | from x402.clients.requests import x402_requests; from eth_account import Account; s = x402_requests(Account.from_key(PK)); r = s.get(URL)",
"pay_with": "USDC on Base (eip155:8453); `accepts[0].amount` is in 6-decimal units (3000 = $0.003)",
"prepaid_credits": "POST /subscribe {\"usd\": 5} on any cyberwarex host -> X-Subscription-Key (+10% bonus, one key works suite-wide, no per-call signing)"
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.002USDC≈ $0.002 USD
on Base · exact scheme
Pay 0.002 USDC on Base to 0x058D…921B2. The signed payment is good for 5 minutes.
- Paid to
- 0x058D…921B2
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 2000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x058D0Cc5CC97e61e8A9f38D6d6365bce525921B2",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"query": "eth"
}
},
"output": {
"type": "json",
"example": {
"query": "eth",
"source": "coingecko",
"price_usd": 3194.51,
"coingecko_id": "ethereum",
"change_24h_pct": -1.87,
"market_cap_usd": 385204119883
}
}
},
"schema": {
"type": "object",
"$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"
},
"queryParams": {
"type": "object",
"required": [
"query"
],
"properties": {
"chain": {
"enum": [
"base",
"ethereum",
"arbitrum",
"optimism",
"polygon"
],
"type": "string",
"default": "base",
"description": "EVM chain to query."
},
"query": {
"type": "string",
"description": "Ticker symbol, CoinGecko id, or 0x token contract address."
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"query": {
"type": "string"
},
"source": {
"type": "string",
"description": "coingecko or dexscreener."
},
"top_pair": {
"type": "object",
"description": "Only for contract-address queries."
},
"price_usd": {
"type": [
"number",
"null"
]
},
"coingecko_id": {
"type": "string"
},
"liquidity_usd": {
"type": "number",
"description": "Only for contract-address queries."
},
"change_24h_pct": {
"type": [
"number",
"null"
]
},
"market_cap_usd": {
"type": [
"number",
"null"
]
},
"volume_24h_usd": {
"type": "number",
"description": "Only for contract-address queries."
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-09 16:20Z
- Last indexed by Roundhouse
- 2026-09-24 12:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 12:15Z
- 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. 30 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 Onchain Query API 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=Onchain%20Query%20API' 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://chain.cyberwarex.com/price, 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.