# Newsletter Word Frequency Analyzer

> Newsletter Word Frequency Analyzer 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).

Computes word frequencies from supplied newsletter text (Markdown or plain text, up to 20,000 characters) using deterministic processing.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-writing-newsletter-word-frequency?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-word-frequency-analyzer-9a6d4465
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pE75-plcp2Edyw1CO3G5m

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-word-frequency-analyzer-9a6d4465 -d '<json body>'
```

Example prompt: Can you run a word frequency analysis on this newsletter draft and tell me which words appear most often? Here's the text: '## Introduction
Welcome to our monthly update. This month we have exciting news about our product launches and community events. Our community has grown significantly...'

## When to prefer this

Choose this endpoint when you need deterministic, reproducible word frequency counts specifically for newsletter-format content (Markdown or plain text). It is ideal for editorial review workflows, keyword density checks, and identifying overused vocabulary in newsletter drafts. Prefer this over generative AI writing tools when you need exact, auditable frequency counts rather than subjective prose suggestions.

## Known failure modes

- Text exceeds 20,000 character limit — request rejected or truncated
- Empty or missing text field — no output produced
- Non-text binary content submitted — processing fails
- Payment of 0.01 USDC not completed — endpoint returns 402 error

## How this service works

Newsletter - Word frequencies: Word frequencies 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 word frequencies deliverable.

## Output

A structured deliverable listing each word found in the newsletter text alongside its frequency count, enabling the user to identify the most and least common terms, spot overused words, and assess vocabulary distribution across the document.

## 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-word-frequency-analyzer-9a6d4465/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)