# ENS Batch Resolver

> ENS Batch Resolver is a paid API for AI agents from x402.professorsausages.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Resolves a mixed batch of up to 25 ENS names to addresses (forward) and addresses to ENS names (reverse) in a single call

## Facts

- Endpoint: POST https://x402.professorsausages.com/ens-resolve/batch
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ens-batch-resolver-3f184947
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UAHviN5SpiIdREjv_uKHD

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability ens-batch-resolver-3f184947 -d '<json body>'
```

Example prompt: Can you resolve this batch of ENS names and Ethereum addresses for me — including vitalik.eth, nick.eth, and 0x983110309620D911731Ac0932219af06091b6744 — and give me the matching addresses or names for all of them at once?

## When to prefer this

Choose this endpoint when you need to resolve more than one ENS name or address at a time and want to minimize round trips — it handles mixed forward and reverse lookups in a single call of up to 25 items. Prefer it over single-item ENS resolvers for any workflow involving lists of identities, airdrop recipients, analytics enrichment, or user onboarding where ENS and raw addresses are intermingled.

## Known failure modes

- Unregistered ENS names return null or empty result for that entry
- Invalid Ethereum addresses cause validation errors for affected entries
- Batch exceeds 25-item limit and is rejected
- ENS resolver or underlying provider temporarily unavailable causing 5xx errors
- ENS name exists but has no address record set, returning partial result

## How this service works

Mixed batch of up to 25 names/addresses (forward + reverse)

## Output

A batch of resolved results mapping each input ENS name to its Ethereum address (forward resolution) or each input Ethereum address to its ENS name (reverse resolution), covering up to 25 mixed entries per call

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object"
  },
  "output": {
   "type": "object"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ens-batch-resolver-3f184947/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.professorsausages.com](https://www.zero.xyz/host/x402.professorsausages.com/llms.txt)