# Tempest AI Content Engine — Newsletter Roundup Generator

> Tempest AI Content Engine — Newsletter Roundup Generator is a paid API for AI agents from tempestars.vercel.app, paid per call via x402, $0.3/call, status unknown (last checked 2026-09-13).

Generates a structured newsletter roundup on a given topic, tailored by tone, audience, and desired sections.

## Facts

- Endpoint: POST https://tempestars.vercel.app/api/roundup
- Price: $0.3/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tempest-ai-content-engine-newsletter-roundup-generator-6776c830
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mqJpBlR4hS-yXin4eECll

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 tempest-ai-content-engine-newsletter-roundup-generator-6776c830 -d '<json body>'
```

Example prompt: Can you draft a weekly AI industry roundup newsletter for tech-savvy founders, with a professional tone, covering sections on top news, product launches, and funding rounds?

## When to prefer this

Choose this endpoint when you need a fully structured, multi-section newsletter roundup generated in one call, especially when you need tone and audience customization built in. It is ideal for automating recurring email digests or briefings at scale via pay-per-call, without managing your own LLM prompting infrastructure. Prefer alternatives if you need fine-grained control over individual paragraph generation or need to generate non-newsletter content formats.

## Known failure modes

- Missing required 'topic' field returns a validation error
- Vague or overly broad topics may produce generic, low-quality roundups
- Unsupported tone descriptors may be ignored or produce unexpected stylistic output
- Very long or complex section lists may exceed model context limits
- Service may return a non-success flag if the AI generation step fails internally

## How this service works

Compose, rewrite, translate, and refine content at scale. 25 AI-powered endpoints. Pay-per-call with USDC on Tempo.

## Output

Returns a structured object containing generated newsletter roundup content organized into the requested sections, tailored to the specified topic, tone, and audience. The response includes a success flag and a data object with the composed text.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "topic"
 ],
 "properties": {
  "tone": {
   "type": "string",
   "description": "Tone"
  },
  "topic": {
   "type": "string",
   "description": "Newsletter topic"
  },
  "audience": {
   "type": "string",
   "description": "Target audience"
  },
  "sections": {
   "type": "array",
   "description": "Desired sections"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "object"
  },
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tempest-ai-content-engine-newsletter-roundup-generator-6776c830/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tempestars.vercel.app](https://www.zero.xyz/host/tempestars.vercel.app/llms.txt)