# Tempest AI Content Engine — Newsletter Roundup Generator

> Tempest AI Content Engine — Newsletter Roundup Generator is a paid API for AI agents from tumpest.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 to a specific audience, tone, and section layout.

## Facts

- Endpoint: POST https://tumpest.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-ac08e210
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_o0vW976-b6pO7zDkwXqRo

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-ac08e210 -d '<json body>'
```

Example prompt: Put together a newsletter roundup on the topic of 'AI in healthcare' for a general professional audience, using an informative and optimistic tone, with sections for Top Stories, Key Insights, and What's Next.

## When to prefer this

Choose this endpoint when you need a fully composed, audience-specific newsletter roundup with multiple structured sections generated in one call, rather than piecing together individual content blocks from separate endpoints. Ideal for automated newsletter pipelines, content scheduling tools, or agents producing recurring digests.

## Known failure modes

- Missing required 'topic' field returns a validation error
- Unsupported or ambiguous tone value may produce generic output
- Overly broad topics may yield shallow or unfocused content
- Network or service unavailability returns a non-200 HTTP error
- Payment failure (insufficient USDC) results in a 402 Payment Required response

## 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 the generated newsletter roundup content, likely including section-by-section text covering the requested topic, audience, tone, and sections, along with a success flag.

## 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-ac08e210/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tumpest.vercel.app](https://www.zero.xyz/host/tumpest.vercel.app/llms.txt)