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x402 Base Tools – Address Profile Lookup
x402
x402 Base Tools – Address Profile Lookup is a paid API for AI agents from wt7tysfcmjm8fpzl.68r.lambda-web.us-east-1.on.aws, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-29).
Retrieves a live on-chain profile for a Base mainnet address including ETH/USDC balances, type, Basename, token holdings, x402 seller status, and recent transaction count.
Price / call$0.001
Success—
StatusUnknown
How this service works
Base mainnet data for agents, read live from the chain and paid per call in USDC: gas prices and costs, token prices from Uniswap and Aerodrome pools, balances, token info, transaction decoding, x402 payment checks, EIP-3009 authorization status, Basenames and address profiles. Lookups of things that do not exist are not charged.
Output
Returns a JSON object with: ETH balance (string, e.g. '0.001'), USDC balance (string, e.g. '8.98'), account type ('eoa' or contract type), token info (null if none), Basename (null if unregistered), x402_seller object (with origins array and listing count, if applicable), and recent transaction count. Non-existent addresses are not charged.
Example use cases
Verify wallet before sending payment
“Before I send funds, can you check the profile for 0xABCD...1234 on Base? I want to confirm it's a real wallet, see their current ETH and USDC balances, and find out if they have a Basename.”
Identify x402 seller reputation
“I want to know if 0x9876...fedc is an x402 seller on Base — how many listings do they have, what origins do they operate from, and what's their recent transaction activity?”
Resolve Basename to address details
“I have the address 0x5555...aaaa on Base — can you tell me if it has a Basename registered and what token balances it's currently holding?”
Technical details
Endpoint
GEThttps://wt7tysfcmjm8fpzl.68r.lambda-web.us-east-1.on.aws/v1/address?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a comprehensive, live on-chain snapshot of a Base mainnet address — combining balance, identity (Basename), account type, x402 seller status, and activity — in a single paid-per-call lookup. Prefer this over separate RPC calls when you want enriched metadata (Basename, x402 seller info) beyond raw chain data, and when operating in an agent context where micropayment-per-call (USDC via x402) is acceptable.
Side effects
- Invalid address format returns an error (not charged)
- Address does not exist on Base — returns empty/null fields, not charged
- RPC or chain data temporarily unavailable — may return 5xx
- Payment failure (insufficient USDC or x402 auth) blocks the request
- Rate limiting if called in rapid succession without valid payment
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"eth": "0.001",
"type": "eoa",
"usdc": "8.98",
"token": null,
"basename": null,
"x402_seller": {
"origins": [
"https://..."
],
"listings": 28
},
"transactions": 3
}
}Tags
x402
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