On-chain Transaction Lookup
Look up an on-chain transaction by hash. Given a chain and a transaction hash returns sender, recipient, value (wei + ETH), nonce, block number, status (success/reverted), gas used, effective gas price, log count and any created contract. For explorers, payment-verification, settlement-checking and monitoring agents.
TradingLiveeip155:8453Exactvia cdp
OnchainTransactionTx-hashTransaction-receiptEthereum
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$2.39
Verified settled volume
508 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.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-25 17:17Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xCe339395d7f2ea5a5009022EF1C392Fb208a989EThe 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.
{
"hint": "Use a supported wallet to pay for this resource using one of the supported payment methods returned in the WWW-Authenticate header. See https://mpp.dev/tools/wallet.md",
"type": "https://paymentauth.org/problems/payment-required",
"title": "Payment Required",
"detail": "Payment is required (Look up an on-chain transaction by hash. Given a chain and a transaction hash returns sender, recipient, value (wei + ETH), nonce, block number, status (success/reverted), gas used, effective gas price, log count and any created contract. For explorers, payment-verification, settlement-checking and monitoring agents.).",
"status": 402,
"challengeId": "YCz-nuNTdoNQwfvJJHS1GgZ-8tm6ku83iq1cdGvly7U"
}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≈ $0.003 USD
on Base · exact scheme
Pay 0.003 USDC on Base to 0xCe33…a989E. The signed payment is good for 5 minutes.
- Paid to
- 0xCe33…a989E
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 3000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xCe339395d7f2ea5a5009022EF1C392Fb208a989E",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"hash": "0x60291bbc7bc60ea3c0c0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0",
"chain": "ethereum"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tx": {
"to": "0x2222222222222222222222222222222222222222",
"from": "0x1111111111111111111111111111111111111111",
"hash": "0x6029...",
"chain": "ethereum",
"nonce": 42,
"value": "1",
"status": "success",
"gasUsed": "21000",
"success": true,
"gasLimit": "21000",
"valueWei": "1000000000000000000",
"inputSize": 0,
"logsCount": 0,
"blockNumber": 21000000,
"contractCreated": null,
"transactionIndex": 7,
"effectiveGasPriceWei": "9000000000"
},
"hash": "0x6029...",
"chain": "ethereum",
"route": "onchain.tx",
"machine": "portfolio"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"hash"
],
"properties": {
"hash": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{64}$",
"description": "Transaction hash."
},
"chain": {
"type": "string",
"default": "ethereum",
"description": "EVM chain (ethereum, base, arbitrum, optimism, polygon, bsc)."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"machine",
"route",
"tx"
],
"properties": {
"tx": {
"type": "object",
"properties": {
"to": {
"type": [
"string",
"null"
]
},
"from": {
"type": [
"string",
"null"
]
},
"hash": {
"type": [
"string",
"null"
]
},
"chain": {
"type": [
"string",
"null"
]
},
"nonce": {
"type": [
"integer",
"null"
]
},
"value": {
"type": [
"string",
"null"
]
},
"status": {
"type": [
"string",
"null"
]
},
"gasUsed": {
"type": [
"string",
"null"
]
},
"success": {
"type": [
"boolean",
"null"
]
},
"gasLimit": {
"type": [
"string",
"null"
]
},
"valueWei": {
"type": [
"string",
"null"
]
},
"inputSize": {
"type": [
"integer",
"null"
]
},
"logsCount": {
"type": [
"integer",
"null"
]
},
"blockNumber": {
"type": [
"integer",
"null"
]
},
"contractCreated": {
"type": [
"string",
"null"
]
},
"transactionIndex": {
"type": [
"integer",
"null"
]
},
"effectiveGasPriceWei": {
"type": [
"string",
"null"
]
}
}
},
"hash": {
"type": "string"
},
"chain": {
"type": "string"
},
"route": {
"type": "string"
},
"machine": {
"type": "string"
},
"economics": {
"type": "object",
"properties": {
"sellPriceUsd": {
"type": "number"
},
"upstreamCostUsdActual": {
"type": [
"number",
"null"
]
}
}
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-08-25 17:17Z
- Last indexed by Roundhouse
- 2026-09-24 16:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-25 08:15Z
- 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 On-chain Transaction Lookup 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=On-chain%20Transaction%20Lookup' 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://agent-commerce-factory-jm.austriaeast.cloudapp.azure.com/v1/onchain/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.