# SlinkeyLayer SERP Rank Checker

> SlinkeyLayer SERP Rank Checker is a paid API for AI agents from x402.slinkylayer.ai, paid per call via x402, $0.025/call, status unknown (last checked 2026-09-15).

Checks the Google search engine results page (SERP) rank for a given keyword, returning structured search result data with optional language, location, and result size parameters.

## Facts

- Endpoint: POST https://x402.slinkylayer.ai/api/v1/proxy/:id/serp-rank
- Price: $0.025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/slinkeylayer-serp-rank-checker-3dd07778
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JLlA9pFUbT09QwTpJStqP

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 slinkeylayer-serp-rank-checker-3dd07778 -d '<json body>'
```

Example prompt: What's the Google SERP rank for the keyword 'best coffee grinders' in English for users in the United States, returning the top 10 results?

## When to prefer this

Choose this endpoint when you need to programmatically check Google SERP rankings for specific keywords with control over language and location parameters, especially within an x402 payment-enabled agent workflow. Ideal for SEO monitoring, competitor analysis, and content strategy tasks that require structured, machine-readable search result data.

## Known failure modes

- Invalid or missing keyword returns an error
- Unsupported language or location code returns a validation error
- Result size parameter out of allowed range returns an error
- Google rate limiting or access restrictions may cause timeouts or empty results
- Payment of $0.025 USDC required per call; insufficient funds returns a payment error

## How this service works

Check Google SERP rank for a given keyword with optional language, location, and size parameters, returning structured search result data.

## Output

Returns structured search result data including rank positions, titles, URLs, and snippets for the queried keyword on Google, filtered by the specified language, location, and number of results.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/slinkeylayer-serp-rank-checker-3dd07778/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.slinkylayer.ai](https://www.zero.xyz/host/x402.slinkylayer.ai/llms.txt)