# Newsletter Whitespace Normalisation

> Newsletter Whitespace Normalisation 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).

Normalises whitespace in newsletter Markdown or plain text documents up to 20,000 characters using deterministic processing rules

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-writing-newsletter-normalise?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-whitespace-normalisation-a6d629a6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xVimB8FGiWeh0yR__ZpXA

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-whitespace-normalisation-a6d629a6 -d '<json body>'
```

Example prompt: Can you normalise the whitespace in this newsletter draft for me? Here's the markdown: '## Introduction
Example content.

## Updates
More content here.'

## When to prefer this

Choose this endpoint when you need deterministic, rule-based whitespace normalisation specifically for newsletter documents in Markdown or plain text format, without any generative rewriting or content changes. Ideal for pipelines that require consistent, reproducible formatting output before publishing or distributing newsletters.

## Known failure modes

- Input text exceeds 20,000 character limit — request rejected
- Empty or missing text field — may return error or pass-through
- Malformed request body — 400-level response
- Payment not included or insufficient — 402 Payment Required

## How this service works

Newsletter - Whitespace normalisation: Whitespace normalisation 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 whitespace normalisation deliverable.

## Output

Returns the input newsletter text with whitespace normalised according to deterministic processing rules — consistent spacing, standardised blank lines, and cleaned formatting — without altering the actual content or prose.

## 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-whitespace-normalisation-a6d629a6/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)