# Product Name Score API

> Product Name Score API is a paid API for AI agents from x402.agentutility.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-20).

Scores the quality of a candidate product, app, feature, tool, newsletter, or API name and returns a numeric score, letter grade, and URL slug.

## Facts

- Endpoint: POST https://x402.agentutility.ai/product-name-score?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/product-name-score-api-14c39572
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AdvVv7EY7kVGIO1Gw4nyh

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 product-name-score-api-14c39572 -d '<json body>'
```

Example prompt: Score the name 'LaunchForge' as a product name for a developer deployment tool targeting indie hackers — tell me the quality score, letter grade, and what slug it would use.

## When to prefer this

Use this endpoint when an AI agent or workflow needs a fast, deterministic quality signal for a product, feature, app, tool, or API name — especially during name generation loops where you want to rank or filter candidates. It is preferable over brand-name-score (same backend) when the framing is explicitly product/feature/API naming rather than brand identity. Choose this when you need a structured score+grade+slug triple rather than a human-readable narrative critique.

## Known failure modes

- Missing required 'name' field returns a validation error
- Very short or single-character names may return low scores or errors
- Payment failure (insufficient USDC) blocks access and returns 402
- Extremely long names may be rejected or scored poorly
- Ambiguous or nonsensical strings receive low scores with no explanation of why

## 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 JSON object with the original name, a URL-friendly slug, a letter grade (e.g. 'excellent'), and a numeric quality score (0–100) reflecting naming strength for the given context.

## 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": [
      "name"
     ],
     "properties": {
      "name": {
       "type": "string",
       "description": "Candidate product, app, feature, tool, or project name."
      },
      "tlds": {
       "type": "array",
       "description": "Optional TLD list used to emit domain candidate strings. Does not check availability."
      },
      "concept": {
       "type": "string",
       "description": "Optional product concept used to score semantic fit."
      },
      "audience": {
       "type": "string",
       "description": "Optional target audience context."
      }
     }
    },
    "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": {
      "name": {
       "type": "string"
      },
      "slug": {
       "type": "string"
      },
      "grade": {
       "type": "string"
      },
      "score": {
       "type": "integer"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "name": "LaunchForge",
  "slug": "launchforge",
  "grade": "excellent",
  "score": 89
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/product-name-score-api-14c39572/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)