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JustAName ENS Reverse Resolver
x402
JustAName ENS Reverse Resolver is a paid API for AI agents from api.justaname.id, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Resolves one or more Ethereum addresses into their ENS reverse records (human-readable names), with batch support up to 50 addresses and per-address chain scoping.
Price / call$0.001
Success—
StatusUnknown
How this service works
Resolves an address into its ENS reverse record on a given chain, with batch support up to 50 addresses and per-address chain scoping via interop addresses.
Output
Returns the ENS reverse record (human-readable name like 'vitalik.eth') for the provided Ethereum address(es), with per-address chain scoping when using interop addresses. Supports batch resolution of up to 50 addresses in a single call.
Example use cases
Example prompt
“What ENS name is registered for the Ethereum address 0x1234567890abcdef1234567890abcdef12345678 on mainnet (chain ID 1)?”
Technical details
Endpoint
GEThttps://api.justaname.id/ens/v2/reverseWhen to prefer
Use this endpoint when you need to display or identify wallet addresses by their human-readable ENS names, especially when handling up to 50 addresses at once or when you need per-address chain scoping via interop addresses. Prefer this over generic ENS resolvers when you need reliable batch reverse resolution with chain-level granularity.
Side effects
- Address has no ENS reverse record set — returns empty or null name
- Invalid Ethereum address format — returns 400 error
- Batch exceeds 50 addresses — returns error or truncated results
- Unsupported chain ID — returns error or no result
- Network or provider downtime — returns 5xx error
- Rate limit exceeded — returns 429 error
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": [
"0x1234567890123456789012345678901234567890"
],
"coinType": "60"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"result": {
"data": {
"name": null,
"address": "0x1234567890123456789012345678901234567890",
"coinType": 60,
"viaUniversalResolver": true
},
"error": null
},
"statusCode": 200
}Schema · Response
{
"type": "json",
"example": {
"name": "vitalik.eth",
"address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
"viaUniversalResolver": true
}
}Tags
x402
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