Onchain Query API
Eight live x402 APIs for AI agents: web access, token safety, speech-to-text, chain data, SEO, search, email, video. Pay per call in USDC on Base, no API key.
DataLiveeip155:8453Exactvia cdp
TransactionTx-receipterc20BlockchainDecode
Calls · 30d
3↓ 14%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 27 snapshots so far.
$10.61
Verified settled volume
1,431 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0030
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-01 02:51Z
—
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": "3000",
"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/tx",
"tags": [
"transaction",
"tx-receipt",
"erc20",
"blockchain",
"decode"
],
"iconUrl": "https://cyberwarex.com/assets/icon.png",
"mimeType": "application/json",
"description": "Transaction lookup and decode on any major EVM chain. Turns a raw tx hash into agent-readable facts: success or failure status, block number, sender and recipient, native value transferred, gas used, fee in native token and USD, and every ERC-20 transfer decoded with token symbol, decimals and human-readable amount. Returns found=false for an unknown hash instead of erroring.",
"serviceName": "Onchain Query API"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"hash": "0x2f1c8b3d4e5a6f708192a3b4c5d6e7f8091a2b3c4d5e6f708192a3b4c5d6e7f8",
"chain": "base"
}
},
"output": {
"type": "json",
"example": {
"to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"fee": {
"usd": 0.00171,
"native": 5.34e-7
},
"from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
"hash": "0x2f1c8b3d4e5a6f708192a3b4c5d6e7f8091a2b3c4d5e6f708192a3b4c5d6e7f8",
"block": 21874431,
"chain": "base",
"found": true,
"status": "success",
"gas_used": 64231,
"logs_count": 3,
"value_native": 0,
"erc20_transfers": [
{
"to": "0x1F98431c8aD98523631AE4a59f267346ea31F984",
"from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"value": 25,
"symbol": "USDC",
"value_raw": "25000000"
}
]
}
}
},
"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": [
"hash"
],
"properties": {
"hash": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{64}$",
"description": "Transaction hash to look up."
},
"chain": {
"enum": [
"base",
"ethereum",
"arbitrum",
"optimism",
"polygon"
],
"type": "string",
"default": "base",
"description": "EVM chain to query."
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"to": {
"type": [
"string",
"null"
]
},
"fee": {
"type": "object",
"description": "Transaction fee in native token and USD."
},
"from": {
"type": "string"
},
"hash": {
"type": "string"
},
"block": {
"type": "integer"
},
"chain": {
"type": "string"
},
"found": {
"type": "boolean"
},
"status": {
"enum": [
"success",
"failed"
],
"type": "string"
},
"gas_used": {
"type": "integer"
},
"logs_count": {
"type": "integer"
},
"value_native": {
"type": "number"
},
"erc20_transfers": {
"type": "array",
"items": {
"type": "object"
},
"description": "Decoded ERC-20 transfers (symbol/value for the first 10)."
}
}
}
}
}
}
}
}
},
"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.
0.003USDC≈ $0.003 USD
on Base · exact scheme
Pay 0.003 USDC on Base to 0x058D…921B2. The signed payment is good for 5 minutes.
- Paid to
- 0x058D…921B2
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 3000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x058D0Cc5CC97e61e8A9f38D6d6365bce525921B2",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"hash": "0x2f1c8b3d4e5a6f708192a3b4c5d6e7f8091a2b3c4d5e6f708192a3b4c5d6e7f8",
"chain": "base"
}
},
"output": {
"type": "json",
"example": {
"to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"fee": {
"usd": 0.00171,
"native": 5.34e-7
},
"from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
"hash": "0x2f1c8b3d4e5a6f708192a3b4c5d6e7f8091a2b3c4d5e6f708192a3b4c5d6e7f8",
"block": 21874431,
"chain": "base",
"found": true,
"status": "success",
"gas_used": 64231,
"logs_count": 3,
"value_native": 0,
"erc20_transfers": [
{
"to": "0x1F98431c8aD98523631AE4a59f267346ea31F984",
"from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
"token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"value": 25,
"symbol": "USDC",
"value_raw": "25000000"
}
]
}
}
},
"schema": {
"type": "object",
"$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": [
"hash"
],
"properties": {
"hash": {
"type": "string",
"pattern": "^0x[a-fA-F0-9]{64}$",
"description": "Transaction hash to look up."
},
"chain": {
"enum": [
"base",
"ethereum",
"arbitrum",
"optimism",
"polygon"
],
"type": "string",
"default": "base",
"description": "EVM chain to query."
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"to": {
"type": [
"string",
"null"
]
},
"fee": {
"type": "object",
"description": "Transaction fee in native token and USD."
},
"from": {
"type": "string"
},
"hash": {
"type": "string"
},
"block": {
"type": "integer"
},
"chain": {
"type": "string"
},
"found": {
"type": "boolean"
},
"status": {
"enum": [
"success",
"failed"
],
"type": "string"
},
"gas_used": {
"type": "integer"
},
"logs_count": {
"type": "integer"
},
"value_native": {
"type": "number"
},
"erc20_transfers": {
"type": "array",
"items": {
"type": "object"
},
"description": "Decoded ERC-20 transfers (symbol/value for the first 10)."
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-01 02:51Z
- Last indexed by Roundhouse
- 2026-09-24 09:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-19 23:45Z
- 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. 27 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/tx, 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.