# Tempest AI Content Engine — Newsletter Roundup Generator

> Tempest AI Content Engine — Newsletter Roundup Generator is a paid API for AI agents from tempest-2zzx.vercel.app, paid per call via x402, $0.3/call, status unknown (last checked 2026-09-14).

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

## Facts

- Endpoint: POST https://tempest-2zzx.vercel.app/api/roundup
- Price: $0.3/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tempest-ai-content-engine-newsletter-roundup-generator-d91a7a28
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_As253Wkw_gEhLaWl4IdaQ

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-d91a7a28 -d '<json body>'
```

Example prompt: Can you draft a newsletter roundup on the topic of AI in healthcare, written in an informative and optimistic tone, targeting healthcare professionals, and include sections for top news, expert opinions, and upcoming events?

## When to prefer this

Choose this endpoint when you need a fully structured, multi-section newsletter roundup generated from a topic in a single call — especially when tone and audience customization are required. Prefer this over general-purpose LLM calls when you want a newsletter-specific output format and pay-per-call pricing without managing your own AI infrastructure.

## Known failure modes

- Missing required 'topic' field returns a validation error
- Overly vague topic may produce generic or low-quality content
- Requested sections that are ambiguous may be interpreted loosely or omitted
- Payment failure (insufficient USDC) results in a 402 response before content is generated
- Very long section lists may exceed generation limits

## 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 newsletter roundup object containing generated content organized by the requested sections, along with a success flag indicating whether the generation completed successfully.

## 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-d91a7a28/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tempest-2zzx.vercel.app](https://www.zero.xyz/host/tempest-2zzx.vercel.app/llms.txt)