Rooms by Aurmada
Use it when you need a wallet's live ETH and USDC balance on Base or Ethereum, or need to know whether an address is a contract or an EIP-7702 delegated account (for example before sending funds). Also returns code size and nonce. Read live from public RPC nodes at the latest block. Never charged for errors: we settle the payment only after a successful answer.
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.
{
"how": "Pay with x402: read the PAYMENT-REQUIRED header, sign, and resend with PAYMENT-SIGNATURE.",
"docs": "https://rooms.aurmada.com/paid",
"mode": "mainnet",
"error": "payment_required",
"price": "$0.003",
"network": "eip155:8453",
"service": "onchain/address"
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.002 USDC on Base to 0xEf56…10a09. The signed payment is good for 5 minutes.
- Paid to
- 0xEf56…10a09
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 2000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xEf56E1Fa792B8F3e87dcB09fA36261D213c10a09",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"chain": "base",
"address": "0x3304E22DDaa22bCdC5fCa2269b418046aE7b566A"
}
},
"output": {
"type": "json",
"example": {
"usdc": {
"raw": "2500000",
"balance": "2.5",
"contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"decimals": 6
},
"block": "52400000",
"chain": "base",
"nonce": 12,
"native": {
"wei": "1500000000000000000",
"symbol": "ETH",
"balance": "1.5"
},
"address": "0x3304E22DDaa22bCdC5fCa2269b418046aE7b566A",
"chain_id": 8453,
"is_contract": false,
"code_size_bytes": 0,
"eip7702_delegated_to": null
}
}
},
"schema": {
"type": "object",
"$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": {
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string",
"description": "Chain (default base)."
},
"address": {
"type": "string",
"pattern": "^0x[0-9a-fA-F]{40}$",
"description": "0x address."
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
},
"sign-in-with-x": {
"info": {
"uri": "https://rooms.aurmada.com/x402/v1/onchain/address",
"nonce": "44e7fea295e2a3c512c5e8452ff3f867",
"domain": "rooms.aurmada.com",
"version": "1",
"issuedAt": "2026-10-25T18:44:43.879Z",
"resources": [
"https://rooms.aurmada.com/x402/v1/onchain/address"
],
"statement": "Sign in with your wallet: your first call to each Rooms lookup is free.",
"expirationTime": "2026-10-25T18:49:43.879Z"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"domain",
"address",
"uri",
"version",
"chainId",
"type",
"nonce",
"issuedAt",
"signature"
],
"properties": {
"uri": {
"type": "string",
"format": "uri"
},
"type": {
"type": "string"
},
"nonce": {
"type": "string"
},
"domain": {
"type": "string"
},
"address": {
"type": "string"
},
"chainId": {
"type": "string"
},
"version": {
"type": "string"
},
"issuedAt": {
"type": "string",
"format": "date-time"
},
"notBefore": {
"type": "string",
"format": "date-time"
},
"requestId": {
"type": "string"
},
"resources": {
"type": "array",
"items": {
"type": "string",
"format": "uri"
}
},
"signature": {
"type": "string"
},
"statement": {
"type": "string"
},
"expirationTime": {
"type": "string",
"format": "date-time"
}
}
},
"supportedChains": [
{
"type": "eip191",
"chainId": "eip155:8453"
}
]
}
}Provenance
- Seen in the source catalog
- 2026-10-25 18:44Z
- Last indexed by Roundhouse
- 2026-10-26 22:40Z
- Last enriched (probe, favicon, geo)
- 2026-10-11 03:46Z
- 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. 20 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 Rooms by Aurmada 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=Rooms%20by%20Aurmada' 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://rooms.aurmada.com/x402/v1/onchain/address, 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.