# Tempest AI Content Engine — SEO Scorecard

> Tempest AI Content Engine — SEO Scorecard is a paid API for AI agents from tempestars.vercel.app, paid per call via x402, $0.2/call, status unknown (last checked 2026-10-11).

Analyzes content against a target keyword and returns an SEO scorecard with AI-powered insights

## Facts

- Endpoint: POST https://tempestars.vercel.app/api/scorecard?utm_source=zero.xyz
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tempest-ai-content-engine-seo-scorecard-97ed88ea
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_W6c4gCJ2_RPTli6ZL5vJi

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-seo-scorecard-97ed88ea -d '<json body>'
```

Example prompt: Can you run my blog post draft through Tempest's scorecard and tell me how well it's optimized for the keyword 'best home espresso machines'? Here's the content: [paste article text]

## When to prefer this

Choose this endpoint when you need a quick, AI-powered SEO scorecard for a specific piece of content against a target keyword, especially in automated content pipelines where you want per-call pay-as-you-go pricing via USDC rather than a subscription SEO tool. Best suited for single-document analysis rather than bulk site audits.

## Known failure modes

- Missing required 'content' field returns validation error
- Empty string content may return low scores or an error
- Overly long content may exceed token or size limits
- Invalid or missing target_keyword defaults to generic content analysis without keyword scoring
- Network timeout on very large content payloads
- Payment failure via x402 protocol prevents request from being processed

## 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 JSON object with a 'success' boolean and a 'data' object containing the SEO scorecard analysis, which likely includes keyword density, content quality signals, optimization recommendations, and scoring metrics relevant to the target keyword.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "content"
 ],
 "properties": {
  "content": {
   "type": "string",
   "description": "Content to analyze"
  },
  "target_keyword": {
   "type": "string",
   "description": "Target keyword"
  }
 }
}
```

## 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-seo-scorecard-97ed88ea/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)