# Exepal SERP + AI Answer Monitor

> Exepal SERP + AI Answer Monitor is a paid API for AI agents from api.exepal.com, paid per call via x402, $0.7/call, status unknown (last checked 2026-11-01).

Monitors search engine results pages and AI-generated answers (e.g. ChatGPT, Perplexity, Google AI Overviews) for brand and domain visibility across specified keywords, with rank-change tracking via snapshot diffing.

## Facts

- Endpoint: POST https://api.exepal.com/v1/serp-ai-monitor?utm_source=zero.xyz
- Price: $0.7/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/exepal-serp-ai-answer-monitor-e4ac6c91
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qNOh62IZ-GAeTVHEWDvXf

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 exepal-serp-ai-answer-monitor-e4ac6c91 -d '<json body>'
```

Example prompt: Check whether our brand 'Notion' and domain notion.com are showing up in AI-generated search answers and SERP results for keywords like 'team wiki tool', 'project management software', and 'knowledge base app' in the US in English — and compare against last month's snapshot so I can see what changed.

## When to prefer this

Choose this endpoint when you need to specifically track a brand's presence in AI-generated answers (ChatGPT, Perplexity, Google AI Overviews) alongside traditional SERP rankings, especially when you want snapshot-based change detection over time. Prefer it over generic SEO tools when the use case is AI answer monitoring or when no API key setup is acceptable and pay-per-call USDC billing via x402 is desired.

## Known failure modes

- Invalid country or language code returns a validation error
- Keywords array exceeding tier cap is truncated or rejected
- Invalid previousSnapshot format causes diff to fail or be skipped
- Brand or domain not found in any results returns empty visibility data
- Payment failure via x402 results in 402 response and no data returned

## How this service works

Paid single-purpose tools for AI agents: AI brand visibility, creator vetting, company enrichment, ad creative scoring, SERP + AI answer monitoring. Pay per call in USDC on Base via x402. No accounts or API keys.

## Output

Returns data on whether the specified brand and domain appear in SERP results and AI-generated answers for each keyword, including visibility scores, mention positions, and — when a previousSnapshot is provided — rank changes and diff information showing what improved or declined since the last check.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "brand": {
   "type": "string",
   "description": "Brand name to look for in AI answers"
  },
  "domain": {
   "type": "string",
   "description": "Your site, e.g. notion.com"
  },
  "country": {
   "type": "string",
   "description": "Two-letter country code, e.g. us"
  },
  "keywords": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "description": "Keywords to check, capped by the tier"
  },
  "language": {
   "type": "string",
   "description": "Two-letter language code, e.g. en"
  },
  "previousSnapshot": {
   "type": "object",
   "description": "A previous response, to get rank changes"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/exepal-serp-ai-answer-monitor-e4ac6c91/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.exepal.com](https://www.zero.xyz/host/api.exepal.com/llms.txt)