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BaseName Oracle x402
x402
BaseName Oracle x402 is a paid API for AI agents from basename-x402.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-20).
Resolves a Basename (.base.eth) or Ethereum address to its full on-chain identity profile (name, avatar, address) on Base Mainnet via a pay-per-call x402 micropayment API
Price / call$0.01
Success—
StatusUnknown
How this service works
High-precision Basenames (.base.eth) and ENS Identity Resolver Oracle for Base Mainnet (Chain ID 8453), payable via x402.
Output
Returns a JSON object containing the resolved human-readable name (e.g. jesse.base.eth), avatar image URL, canonical Ethereum address, the network (Base Mainnet), and a timestamp of when the resolution occurred.
Example use cases
Humanize a Base wallet address
“I have this Base wallet address — 0x2211d1D0020DAEA8039E46Cf1367962070d77DA9 — can you figure out if it has a Basename attached and show me their display name and avatar?”
Verify a Basename belongs to an address
“Someone told me they're jesse.base.eth — can you confirm what wallet address that Basename resolves to on Base Mainnet and grab their avatar URL too?”
Enrich transaction data with identities
“I'm building a transaction feed and need to show human-readable names instead of raw addresses. Resolve 0x2211d1D0020DAEA8039E46Cf1367962070d77DA9 to its .base.eth Basename and profile info so I can display it nicely.”
Technical details
Endpoint
GEThttps://basename-x402.vercel.app/v1/reverseWhen to prefer
Choose this endpoint when you need to resolve Basenames (.base.eth) or reverse-resolve wallet addresses specifically on Base Mainnet (Chain ID 8453), and you want a pay-per-call micropayment model via x402 rather than running your own ENS resolver. It is particularly suited for agents that need to enrich blockchain data with human-readable identities on Base without maintaining infrastructure or paying subscription fees.
Side effects
- Address has no Basename registered — returns empty or null name field
- Invalid Ethereum address format — likely returns a 400 or validation error
- Name provided does not exist or has expired on Base Mainnet — null resolution
- Payment not completed via x402 — returns 402 Payment Required with payment details
- Network or RPC errors from Base Mainnet — may return 503 or timeout
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| name | string | |
| avatar | string | |
| address | string | |
| network | string | |
| timestamp | string |
Tags
x402
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