# Newsletter Escaped HTML Preview

> Newsletter Escaped HTML Preview 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).

Converts newsletter Markdown or plain text (up to 20,000 characters) into an escaped HTML preview using deterministic document templates

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-writing-newsletter-safe-html?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-escaped-html-preview-2290720c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8zCoUhtKG1Mduhj_5Zi4M

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-escaped-html-preview-2290720c -d '<json body>'
```

Example prompt: Take my newsletter draft — it's got a markdown intro, updates section, and call-to-action — and turn it into an escaped HTML preview I can safely embed.

## When to prefer this

Choose this endpoint when you need a deterministic, template-based escaped HTML preview of newsletter content (Markdown or plain text) without any AI-generated prose or hallucination risk. Ideal for pipelines that require reproducible HTML output from structured newsletter drafts at low cost ($0.01 USDC per call).

## Known failure modes

- Input text exceeds 20,000 character limit — request rejected
- Empty or missing text field — may return empty or error response
- Non-UTF8 or malformed input encoding — processing failure
- Service unavailable or payment not settled — 402 or 5xx error

## How this service works

Newsletter - Escaped HTML preview: Escaped HTML preview 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 escaped html preview deliverable.

## Output

A deterministically processed escaped HTML preview of the supplied newsletter Markdown or plain text, rendered using document templates — no generative prose, no fact-checking, just a safe HTML-escaped rendition of the input content.

## 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-escaped-html-preview-2290720c/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)