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x402 Bazaar — Basename Resolution (Base L2)
x402
x402 Bazaar — Basename Resolution (Base L2) is a paid API for AI agents from api.relai.fi, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Resolves Base ENS names (Basenames) to Ethereum addresses and reverse-resolves addresses to their primary Basename, reading directly from the Base L2 Resolver.
Price / call$0.01
Success—
StatusUnknown
How this service works
Forward + reverse Basename resolution read from the Base L2 Resolver: turn jesse.base.eth into an address, or an address into its primary Basename. No API key required. Paid via x402: $0.005 in USDC on Base (eip155:8453) to 0x973a31858f4d2125f48c880542da11a2796f12d6. Returns 402 with payment requirements; pay and retry.
Output
Returns either the resolved Ethereum address for a given Basename, or the primary Basename for a given Ethereum address, as read from the Base L2 Resolver contract.
Example use cases
Example prompt
“What Ethereum address does jesse.base.eth resolve to on Base? And while you're at it, can you also reverse-lookup 0x329a7f8b91Ce7479035cb1B5D62AB41845830Ce8 to find its primary Basename?”
Technical details
Endpoint
POSThttps://api.relai.fi/relay/1782567677091/api/x402/basenameWhen to prefer
Use this endpoint when you need on-chain, authoritative Basename resolution on Base L2 without an API key, and are comfortable with the x402 micropayment flow. Prefer it over general-purpose ENS resolvers when working specifically with Basenames (*.base.eth) rather than mainnet ENS names.
Side effects
- Unregistered Basename returns null or not-found response
- Address has no primary Basename set — returns empty result
- 402 Payment Required returned if x402 micropayment not included — must pay $0.005 USDC on Base and retry
- Invalid address format or malformed Basename causes 400 bad request
- Network issues with Base L2 RPC cause resolution timeout
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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