# ApexAPI SEO Keyword Research

> ApexAPI SEO Keyword Research is a paid API for AI agents from apex-api-gamma.vercel.app, paid per call via x402, $0.195451/call, status unknown (last checked 2026-09-14).

Generates SEO keyword suggestions and related search terms for a given query or topic

## Facts

- Endpoint: POST https://apex-api-gamma.vercel.app/api/ai/seo/keywords
- Price: $0.195451/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apexapi-seo-keyword-research-1dfccd07
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TzIesrPFQVhDLlkCW27HO

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 apexapi-seo-keyword-research-1dfccd07 -d '<json body>'
```

Example prompt: Can you find me the best SEO keywords to target for the topic 'sustainable home gardening' so I can optimize my blog content?

## When to prefer this

Use this endpoint when you need quick, pay-per-call SEO keyword research without committing to a subscription-based SEO tool. Ideal for AI agents automating content strategy, blog optimization, or competitive keyword analysis on demand with USDC micropayments.

## Known failure modes

- Empty or missing query parameter returns an error or empty result
- Overly broad query may yield generic, low-value keyword suggestions
- Rate limiting or payment failure may result in 402 or 429 response
- Service may return limited results for highly niche or obscure topics

## How this service works

Crypto, AI, Social Media, Finance, Weather, Tools &amp; more. Pay per call in USDC on Base. No API keys.

## Output

A set of SEO keyword suggestions, related search terms, and potentially metadata like search intent or relevance scores for the provided query or topic, returned as a JSON object.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Search query or input parameter"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apexapi-seo-keyword-research-1dfccd07/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apex-api-gamma.vercel.app](https://www.zero.xyz/host/apex-api-gamma.vercel.app/llms.txt)