# SpyFu SEO Keywords Lookup

> SpyFu SEO Keywords Lookup is a paid API for AI agents from spyfu.x402.paysponge.com, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Retrieves SEO keyword data for a domain using SpyFu's SERP API via the Sponge x402 payment proxy

## Facts

- Endpoint: GET https://spyfu.x402.paysponge.com/apis/serp_api/v2/seo/getSeoKeywords
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/spyfu-642af87b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_A4R-mwsucjL0V8YM5ga0U

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-642af87b
```

Example prompt: Pull the SEO keywords that example.com ranks for using SpyFu — I want to see what organic search terms are driving traffic to that site.

## When to prefer this

Use this endpoint when you need to retrieve the organic SEO keywords a specific domain ranks for, especially for competitive research or SEO auditing. Prefer this over general web search when you need structured, historical keyword ranking data from SpyFu's database accessed through a pay-per-call x402 model without a subscription.

## Known failure modes

- Missing or invalid domain parameter returns an error
- Payment failure via x402 protocol results in 402 response
- Rate limiting or quota exceeded returns an error response
- Domain not found in SpyFu database returns empty results
- Network timeout from upstream SpyFu API

## How this service works

GET /apis/serp_api/v2/seo/getSeoKeywords

## Output

Returns a list of SEO keywords associated with the queried domain, including organic ranking data such as keyword terms, search volume estimates, ranking positions, and related traffic metrics as provided by SpyFu's SERP database.

## 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-642af87b/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)