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Base Basename Resolver (Forward & Reverse)
x402
Base Basename Resolver (Forward & Reverse) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-29).
Resolves a Base Basename (e.g. alice.base.eth) to an address, or reverse-resolves an address to its Base Basename, using the Base ENS registry.
Price / call$0.005
Success—
StatusUnknown
How this service works
Call when an agent needs a Base Basename forward or reverse lookup. Send name (alice or alice.base.eth) or address, not both. Single labels become label.base.eth. Base registry only: no L1 CCIP-read. Unresolved is resolved false. Send JSON {"name":"alice.base.eth"}. Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/basename-resolve first.
Output
Returns a JSON object indicating whether the name or address resolved successfully (resolved: true/false), along with the resolved counterpart — either the Ethereum address for a forward lookup or the Basename for a reverse lookup. Unresolvable names/addresses return resolved: false.
Example use cases
Forward resolve a Basename to address
“Look up the Ethereum address for vitalik.base.eth on the Base network — I want to know what wallet it points to.”
Reverse lookup address to Basename
“Can you tell me what Base Basename is registered for the address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045?”
Validate Basename before sending funds
“Before I send crypto, can you confirm that bob.base.eth actually resolves to a valid address on Base, and tell me what that address is?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/basename-resolve?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to resolve Base-specific Basenames (*.base.eth) to Ethereum addresses or reverse-resolve Base wallet addresses to their human-readable Basenames. It is purpose-built for the Base L2 ENS registry and does not perform L1 CCIP-read, making it faster and cheaper than a general ENS resolver for Base-native names. Prefer this over generic ENS APIs when the target name is known to be a Base Basename.
Side effects
- Name not registered on Base registry → resolved: false
- Address has no reverse record set → resolved: false
- Both name and address sent simultaneously → validation error (send only one)
- Invalid address format → error response
- L1-only ENS names with CCIP-read dependency → not supported, resolved: false
- Payment not included or incorrect amount → 402 Payment Required (use /v1/sandbox/basename-resolve for free testing)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| name | string | Basename or ENS label. Example: alice.base.eth. A single label such as alice is read as alice.base.eth. Other ASCII .eth names are looked up on the Base registry only, with no L1 CCIP-read. Send name or address, not both. |
| address | string | Address to reverse-resolve on Base. Example: 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045. Uses {address}.addr.reverse on the Base ENS registry. Send address or name, not both. |
Tags
x402
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