Ethereum Token Verdict Preview
Token Quick Check: Ethereum mainnet contract facts -- name, supply, owner, code. Not financial advice. Returns: a token verdict preview on one token contract: the contract facts the full verdict reads -- code size, name, symbol, decimals, total supply, owner(), proxy slots -- read from the chain. No grade, no model, no pool price, no holders, no safety or legitimacy call.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — 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.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "payment required: retry with a PAYMENT-SIGNATURE header built from one of `accepts`",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x647Cb3F7Bd06745968bee674888Fd195786782F4",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://api.arysphere.com/v1/ventures/x402_eth_token_verdict_v1/eth_erc20_address_check_preview",
"description": "Token Quick Check: Ethereum mainnet contract facts -- name, supply, owner, code. Not financial advice. Returns: a token verdict preview on one token contract: the contract facts the full verdict reads -- code size, name, symbol, decimals, total supply, owner(), proxy slots -- read from the chain. No grade, no model, no pool price, no holders, no safety or legitimacy call.",
"maxAmountRequired": "2000",
"maxTimeoutSeconds": 60
}
],
"example": {
"how": "base64(JSON.stringify(x_payment)) in the X-PAYMENT request header; sign the EIP-3009 transferWithAuthorization with the asset's extra.name/extra.version domain on chain 8453",
"x_payment": {
"scheme": "exact",
"network": "base",
"payload": {
"signature": "<0x EIP-712 signature>",
"authorization": {
"to": "0x647Cb3F7Bd06745968bee674888Fd195786782F4",
"from": "<buyer address>",
"nonce": "<0x 32 random bytes>",
"value": "2000",
"validAfter": "<unix s, now-60>",
"validBefore": "<unix s, now+maxTimeoutSeconds>"
}
},
"x402Version": 1
},
"requirements": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0x647Cb3F7Bd06745968bee674888Fd195786782F4",
"scheme": "exact",
"network": "base",
"maxAmountRequired": "2000"
}
},
"x402Version": 1
}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 0.002 USDC on Base to 0x647C…782F4. The signed payment is good for 1 minute.
- Paid to
- 0x647C…782F4
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 2000 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
- 0x647C…782F4
- Token contract
- 0x3c49…c3359
- Payment window
- 1 minute
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
- 0x647C…782F4
- Token contract
- 0xaf88…e5831
- Payment window
- 1 minute
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x647Cb3F7Bd06745968bee674888Fd195786782F4",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x647Cb3F7Bd06745968bee674888Fd195786782F4",
"amount": "2000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 60
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x647Cb3F7Bd06745968bee674888Fd195786782F4",
"amount": "2000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"token": "0xdAC17F958D2ee523a2206206994597C13D831ec7"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"properties": {
"token": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "token contract, 0x + 40 hex"
}
}
}
},
"additionalProperties": false
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-25 02:43Z
- Last indexed by Roundhouse
- 2026-10-26 12:40Z
- Last enriched (probe, favicon, geo)
- 2026-10-25 14:16Z
- x402 version
- 2
- Max timeout
- 60s
- 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
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Ethereum Token Verdict Preview 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=Ethereum%20Token%20Verdict%20Preview' 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.arysphere.com/v1/ventures/x402_eth_token_verdict_v1/eth_erc20_address_check_preview, 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.