# North Desk Headline Generator

> North Desk Headline Generator is a paid API for AI agents from annotated-pentium-lib-storm.trycloudflare.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).

Generates one testable headline for a given product and target audience

## Facts

- Endpoint: POST https://annotated-pentium-lib-storm.trycloudflare.com/v1/headline
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/north-desk-headline-generator-06c37e20
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__0Q6lg3OU3-Wc9JihX5Rh

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 north-desk-headline-generator-06c37e20 -d '<json body>'
```

Example prompt: Write me one testable headline for my project management app called TaskFlow, aimed at freelancers who struggle to stay organized.

## When to prefer this

Choose this endpoint when you need a single, concise, testable headline — not long-form copy or multiple variants. It is ideal for A/B testing scenarios where you want one focused headline anchored to a specific product and audience. Prefer it over generic LLM prompts when you want a structured, paid, production-ready copywriting service with consistent output format. Use the sibling one-paragraph ad copy endpoint if you need fuller landing page copy instead.

## Known failure modes

- Missing 'product' field returns validation error
- Missing 'audience' field returns validation error
- Vague or empty product/audience descriptions may yield generic or low-quality headlines
- Payment failure on Solana mainnet (insufficient USDC balance or network issues) blocks the request
- Rate limiting or server unavailability on the Cloudflare tunnel URL

## How this service works

One testable headline for a product and audience. $0.25 USDC on Solana mainnet.

## Output

A single, testable headline string crafted specifically for the provided product and audience — suitable for A/B testing on landing pages, ads, or product pages.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "product": {
   "type": "string",
   "description": "What you are selling or naming"
  },
  "audience": {
   "type": "string",
   "description": "Who the headline must work on"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/north-desk-headline-generator-06c37e20/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from annotated-pentium-lib-storm.trycloudflare.com](https://www.zero.xyz/host/annotated-pentium-lib-storm.trycloudflare.com/llms.txt)