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x402 Base Tools – Basename Resolver
x402
x402 Base Tools – Basename Resolver is a paid API for AI agents from base.kagurazaka.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-29).
Resolves a Basename (e.g. jesse.base.eth) to its Ethereum address, or reverse-resolves an address to its primary Basename on Base.
Price / call$0.001
Success—
StatusUnknown
How this service works
Resolve a Basename (name.base.eth) to its address, or find the primary Basename of an address (only when the name points back to it).
Output
Returns a JSON object containing the resolved Basename (e.g. 'jesse.base.eth') and its corresponding Ethereum address (e.g. '0x2211...'). For forward resolution (name → address), returns the address. For reverse resolution (address → name), returns the primary Basename only if the name points back to that address (verified reverse lookup).
Example use cases
Resolve Basename before sending payment
“Before I send USDC, can you look up the wallet address for vitalik.base.eth so I know I have the right destination?”
Identify Basename of a known wallet
“I have this address 0x2211d1d0020daea8039e46cf1367962070d77da9 — does it have a Basename registered on Base?”
Verify identity behind a Basename
“Someone told me their Basename is alice.base.eth — can you confirm what Ethereum address that resolves to so I can verify it's the right person?”
Technical details
Endpoint
GEThttps://base.kagurazaka.dev/v1/basename?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to resolve a Base-native .base.eth Basename to an Ethereum address or vice versa, specifically on the Base L2 network. Prefer this over generic ENS resolvers when working within the Base ecosystem, as it handles Basename-specific reverse resolution validation (name-to-address pointer check). Ideal for identity enrichment, payment address verification, or user display name lookups in Base-native dApps and agents.
Side effects
- Name not registered: returns null or empty address if the Basename does not exist
- Reverse resolution fails: address has no primary Basename set, or the name does not point back to the address
- Invalid input: malformed address or name format returns an error
- Network issues: Base RPC unavailability may cause timeouts
- Name mismatch: reverse resolution returns nothing if primary name does not point back to the queried address
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"name": "jesse.base.eth",
"address": "0x2211d1d0020daea8039e46cf1367962070d77da9"
}
}Tags
x402
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