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Base Basename Resolver
x402
Base Basename Resolver is a paid API for AI agents from 89-116-220-218.sslip.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-29).
Resolves a Basename (name.base.eth) to its Base address, or a Base address to its verified primary Basename, with bidirectional verification.
Price / call$0.003
Success—
StatusUnknown
How this service works
Resolve a Basename (name.base.eth) to its Base address, or an address to its primary Basename, checked both ways so a reverse name is only returned when it resolves back. Use it to turn a human name into a payout address or to label an address. Avoids hand-written ENS-style namehash and resolver calls. Query: ?name=jesse.base.eth or ?address=0x...
Output
Returns the resolved Base address for a given Basename, or the verified primary Basename for a given address. Includes bidirectional verification so a reverse name is only returned when it resolves back to the same address, preventing spoofed reverse records.
Example use cases
Resolve Basename to payout address
“I need to pay vitalik.base.eth — can you look up what Base wallet address that Basename resolves to so I can send USDC to the right place?”
Label address with human name
“I have the address 0x4bBFD120d9f352A0BEd7a014bd67913DB2e52B64 — can you check if it has a primary Basename registered so I can show a human-readable label in my app instead of the raw address?”
Verify Basename ownership before transfer
“Before I send funds, can you confirm that alice.base.eth actually resolves back to the address 0xAbC123... — I want to make sure the reverse record matches so I know the name is legitimately claimed?”
Technical details
Endpoint
GEThttps://89-116-220-218.sslip.io/base/basename?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to resolve Basenames (name.base.eth) to Base addresses or reverse-lookup addresses to Basenames without writing ENS namehash and resolver logic yourself. It handles bidirectional verification automatically, making it safer than a naive forward-only lookup. Prefer this over raw RPC calls when operating in an agent context on Base mainnet where simplicity and correctness of identity resolution matter.
Side effects
- Name not found or not registered — returns null or error for unregistered Basenames
- Address has no primary Basename set — returns empty or null for the reverse lookup
- Reverse record mismatch — name does not resolve back to the queried address, so no Basename is returned
- Invalid address format — 400-level error if address doesn't match 0x hex pattern
- Network or RPC error — upstream Base node unavailable causing timeout or 5xx response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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