# ClearCheck Title Generator

> ClearCheck Title Generator is a paid API for AI agents from loonie-toll.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Generates ranked candidate headlines, subject lines, or article titles for a given passage of text

## Facts

- Endpoint: GET https://loonie-toll.onrender.com/title
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/clearcheck-title-generator-4efc0e87
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IE9Y-GhS6bnt9CjxLYjnX

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 clearcheck-title-generator-4efc0e87
```

Example prompt: Can you generate 5 headline candidates for this article intro — keep each title under 70 characters: 'Scientists at MIT have developed a new battery technology that could double the range of electric vehicles while cutting charging time in half, according to a paper published Monday in Nature Energy.'

## When to prefer this

Choose this endpoint when you need multiple ranked headline or subject line candidates from a block of text, especially for email subject lines, article titles, or ticket summaries. It is distinct from generic LLM summarization because it returns structured ranked lists with configurable count and character-length constraints, making it ideal for copy optimization workflows where you need to compare options.

## Known failure modes

- Missing required 'text' query parameter returns an error
- Text exceeding 6000 characters may be rejected or truncated
- Very short or ambiguous input text may yield generic or low-quality titles
- Count or maxChars parameters outside expected ranges may be ignored or cause errors
- Service downtime on Render free-tier hosting may cause 503 responses

## How this service works

Candidate headlines for a passage, ranked. For subject lines, article titles and ticket summaries.

## Output

Returns a ranked array of candidate title strings, the number of titles generated, the AI model used, a source reference, a verdict string, maximum character length applied, and a disclaimer. Titles are ordered from most to least recommended for the given passage.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "text"
     ],
     "properties": {
      "text": {
       "type": "string",
       "description": "The text to work on. 6000 characters maximum."
      },
      "count": {
       "type": "integer",
       "description": "How many candidates, default 5"
      },
      "maxChars": {
       "type": "integer",
       "description": "Maximum title length, default 70"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "count": {
       "type": "integer"
      },
      "model": {
       "type": "string"
      },
      "source": {
       "type": "string"
      },
      "titles": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "verdict": {
       "type": "string"
      },
      "maxChars": {
       "type": "integer"
      },
      "disclaimer": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/clearcheck-title-generator-4efc0e87/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from loonie-toll.onrender.com](https://www.zero.xyz/host/loonie-toll.onrender.com/llms.txt)