# Newsletter Heading Outline Generator

> Newsletter Heading Outline Generator is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Extracts and formats a structured heading outline from newsletter Markdown or plain text content

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-writing-newsletter-outline?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/newsletter-heading-outline-generator-b91914b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dk5ZVv6LHIA0Bq76m80t8

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 newsletter-heading-outline-generator-b91914b6 -d '<json body>'
```

Example prompt: Can you generate a heading outline from this newsletter draft I've written? Here's the markdown: '## Introduction\nWelcome to our monthly update...\n## Product News\nWe launched...\n## Call to Action\nSign up now...'

## When to prefer this

Choose this endpoint when you need a deterministic, non-generative heading outline from an existing newsletter draft in Markdown or plain text. It is ideal when you want a reliable, repeatable structural extraction without any AI-generated prose or hallucination risk. Prefer it over generative outline tools when the source document already exists and you simply need its heading hierarchy surfaced.

## Known failure modes

- Input text exceeds 20,000 character limit — request rejected
- Input contains no recognizable headings — outline may be empty or minimal
- Malformed markdown with inconsistent heading syntax may produce incomplete outline
- Payment of 0.01 USDC not fulfilled — x402 payment required before processing

## How this service works

Newsletter - Heading outline: Heading outline for Newsletter. Supplied Markdown or plain text, up to 20,000 characters. Deterministic processing and document templates; no generative prose or fact checking. One of 25 profiles or calculations across 20 shared operations in this sector. 0.01 USDC includes one bounded heading outline deliverable.

## Output

A bounded heading outline derived from the supplied newsletter Markdown or plain text, listing the document's headings in structured order — no generative prose, no fact-checking, purely deterministic extraction of up to 20,000 characters of input.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "default": "## Introduction\nExample 1 content.\nTODO: review the supplied document by 2026-10-10.\n\n## Updates\nExample 2 content.\nTODO: review the supplied document by 2026-10-10.\n\n## Call to action\nExample 3 content.\nTODO: review the supplied document by 2026-10-10.",
   "maxLength": 20000
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/newsletter-heading-outline-generator-b91914b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)