x402-research-iota.vercel.app
One-call Base (8453) preflight: risk snapshot + live ERC-20 approvals + OFAC SDN screen + optional x402 invoice check (?invoice= JSON or base64). Returns risk, approvals, invoice, sanctions and summary {verdict proceed|review|stop, flags}. Free sample: /api/preflight/sample. 400 bad input; 503 not charged. Informational, not a guarantee.
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.
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 0.05 USDC on Base to 0xa26f…b8147. The signed payment is good for 5 minutes.
- Paid to
- 0xa26f…b8147
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 50000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xa26f179e42836bc4ae0cea997fdfc9602d5b8147",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": "0xf9623fab6780984eacac443158c0309519451afa"
}
},
"output": {
"type": "json",
"example": {
"risk": {
"flags": [],
"riskLevel": "low",
"accountType": "eoa"
},
"signed": false,
"address": "0xf962...1afa",
"chainId": 8453,
"invoice": null,
"summary": {
"flags": [
{
"code": "unlimited_approval",
"level": "high",
"detail": "Unlimited USDC allowance to spender 0x1111...0a65.",
"source": "approvals"
}
],
"verdict": "stop",
"riskLevel": "low",
"verdictNote": "Informational heuristic only, not a guarantee.",
"coverageNote": "Public-data heuristics only... \"none\" never means safe.",
"highRiskCount": 1,
"invoiceVerdict": null,
"approvalsStatus": "ok",
"sanctionsStatus": "clear"
},
"approvals": {
"status": "ok",
"approvals": [
{
"risk": "high",
"symbol": "USDC",
"spender": "0x1111...0a65",
"allowanceFormatted": "unlimited"
}
],
"highRiskCount": 1
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$"
},
"invoice": {
"type": "string",
"description": "optional x402 PaymentRequired, raw JSON or base64"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"risk": {
"type": "object"
},
"signed": {
"type": "boolean"
},
"address": {
"type": "string"
},
"invoice": {
"type": [
"object",
"null"
]
},
"summary": {
"type": "object",
"properties": {
"flags": {
"type": "array",
"items": {
"type": "object"
}
},
"coverageNote": {
"type": "string"
},
"highRiskCount": {
"type": "number"
}
}
},
"approvals": {
"type": "object"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-24 21:42Z
- Last indexed by Roundhouse
- 2026-10-26 16:50Z
- Last enriched (probe, favicon, geo)
- —
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- Not probed
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 x402-research-iota.vercel.app 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=x402-research-iota.vercel.app' 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://x402-research-iota.vercel.app/api/x402/preflight, 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.