# AgentUtility Domain Suggest

> AgentUtility Domain Suggest is a paid API for AI agents from x402.agentutility.ai, paid per call via x402, $0.05/call, status unknown (last checked 2026-11-04).

Brainstorms brandable domain name candidates for a given concept, then checks availability across specified TLDs

## Facts

- Endpoint: POST https://x402.agentutility.ai/domain-suggest?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-04
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentutility-domain-suggest-09f1ce8b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0kxiT2ysDQHiPF19T_rv9

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 agentutility-domain-suggest-09f1ce8b -d '<json body>'
```

Example prompt: Brainstorm 8 brandable domain names for a 'graded sports card portfolio tracker for collectors', check availability on .com, .ai, and .io, using a neutral tone — give me the ones with the best brandability scores.

## When to prefer this

Use this endpoint when you need both creative name generation AND real-time availability checking in a single call. It's ideal for product naming workflows where you want LLM-powered brandability scoring alongside actual DNS lookup results. Prefer this over generic WHOIS checkers when you need brainstorming rather than checking a specific known name, and over pure LLM prompting when you need verified availability data.

## Known failure modes

- concept string exceeds 240 characters — returns validation error
- count × tlds.length exceeds 80 lookups — returns 400 bad request
- unsupported TLD provided (not in allowlist) — returns validation error
- LLM brainstorm timeout — may return fewer candidates than requested
- all suggested names already taken — returns candidates with empty available_tlds arrays

## How this service works

817 pay-per-call APIs for AI agents. Every endpoint is POST /<name> and is payable in USDC over x402 on Base and Solana — no signup, no API key, just pay-per-call. GET https://x402.agentutility.ai/ returns the same catalog as machine-readable JSON.

## Output

Returns a list of brainstormed domain name candidates, each with its slug, a human-readable rationale explaining the naming choice, a brandability score (1-10), and arrays of available and taken TLDs — plus a summary of how many candidates were returned and which TLDs were checked.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "concept"
     ],
     "properties": {
      "tlds": {
       "type": "array",
       "description": "TLDs to check, without dots. Default ['com','ai','dev','io','co']. Allowlist: com, ai, dev, io, co, app, xyz, org, net, tech, tools, page, studio, shop. Max 6."
      },
      "tone": {
       "enum": [
        "neutral",
        "playful",
        "technical",
        "luxury",
        "industrial"
       ],
       "type": "string",
       "description": "Naming tone hint passed to the brainstorm LLM. Default 'neutral'."
      },
      "count": {
       "type": "number",
       "description": "Number of candidates to brainstorm. 1-20. Default 10. Multiplied by tlds.length must stay <= 80 lookups."
      },
      "concept": {
       "type": "string",
       "description": "Plain-language product / project description (1-240 chars). Example: 'graded-card portfolio tracker for collectors' or 'paid AI utility primitives for agents'."
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "concept": {
       "type": "string"
      },
      "candidates": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "name": {
          "type": "string"
         },
         "slug": {
          "type": "string"
         },
         "rationale": {
          "type": "string"
         },
         "taken_tlds": {
          "type": "array"
         },
         "available_tlds": {
          "type": "array",
          "items": {
           "type": "string"
          }
         },
         "available_count": {
          "type": "integer"
         },
         "brandability_score": {
          "type": "integer"
         }
        }
       }
      },
      "tlds_checked": {
       "ty
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "concept": "graded-card portfolio tracker for collectors",
  "candidates": [
   {
    "name": "Slabledger",
    "slug": "slabledger",
    "rationale": "Native collector vocab + ledger evokes portfolio tracking.",
    "taken_tlds": [],
    "available_tlds": [
     "com",
     "ai",
     "dev",
     "io",
     "co"
    ],
    "available_count": 5,
    "brandability_score": 9
   }
  ],
  "tlds_checked": [
   "com",
   "ai",
   "dev",
   "io",
   "co"
  ],
  "returned_count": 8
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentutility-domain-suggest-09f1ce8b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.agentutility.ai](https://www.zero.xyz/host/x402.agentutility.ai/llms.txt)