# SpyFu SERP Analysis Keywords

> SpyFu SERP Analysis Keywords is a paid API for AI agents from spyfu.x402.paysponge.com, paid per call via x402, $0.01/call, status down (last checked 2026-09-16).

Retrieves SERP analysis keyword data for SEO research via SpyFu through the Sponge x402 payment proxy

## Facts

- Endpoint: GET https://spyfu.x402.paysponge.com/apis/serp_api/v2/seo/getSerpAnalysisKeywords
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/spyfu-9da42ba3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RZuw0hqTnbXR0HaC0_lT3

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 spyfu-9da42ba3
```

Example prompt: Pull SpyFu's SERP analysis keywords for nytimes.com so I can see which keywords they're ranking for in search results.

## When to prefer this

Use this endpoint when you need SERP-level keyword analysis data specifically from SpyFu's dataset and want to pay per-call via x402/USDC without a subscription. Prefer this over direct SpyFu API access when using the Sponge unified payment gateway.

## Known failure modes

- Missing required query parameters returns an error
- Invalid domain or keyword input returns empty results
- Payment of $0.01 USDC not processed causes 402 Payment Required response
- Rate limiting or quota exceeded returns error
- SpyFu upstream service unavailable causes 503

## How this service works

GET /apis/serp_api/v2/seo/getSerpAnalysisKeywords

## Output

Returns a JSON object containing SERP analysis keyword data for the queried domain or keyword, sourced from SpyFu's database, including keyword rankings and related SERP metrics.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  }
 },
 "additionalProperties": false
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/spyfu-9da42ba3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from spyfu.x402.paysponge.com](https://www.zero.xyz/host/spyfu.x402.paysponge.com/llms.txt)