# SpyFu Competing SEO Keywords (Kombat)

> SpyFu Competing SEO Keywords (Kombat) is a paid API for AI agents from spyfu.x402.paysponge.com, paid per call via x402, $0.01/call, status down (last checked 2026-09-13).

Returns the SEO keywords that competing domains share or contest, surfacing head-to-head keyword overlap for competitive analysis.

## Facts

- Endpoint: GET https://spyfu.x402.paysponge.com/apis/keyword_api/v2/kombat/getCompetingSeoKeywords
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/spyfu-4d83f4c1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_418dcRbjeFPu-YOjU_bVu

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-4d83f4c1
```

Example prompt: Show me the competing SEO keywords between nytimes.com and washingtonpost.com — I want to see which organic search keywords they're both fighting over.

## When to prefer this

Use this endpoint when you need to identify the specific keywords where two or more domains overlap in organic SEO rankings — ideal for competitive gap analysis, content strategy, or deciding which keywords to prioritize to outrank a known competitor. Prefer this over general keyword research endpoints when the use case is explicitly comparative between named domains.

## Known failure modes

- Missing required domain parameters returns a 400 error
- Invalid or unrecognized domain returns empty results or 404
- Rate limiting may return 429 if quota is exceeded
- Payment failure (x402) returns 402 Payment Required
- Domains with insufficient SpyFu data may return sparse or empty keyword sets

## How this service works

GET /apis/keyword_api/v2/kombat/getCompetingSeoKeywords

## Output

A list of SEO keywords that the queried domains are both competing for in organic search, including data points like search volume, ranking positions per domain, and overlap metrics — enabling direct head-to-head comparison of keyword presence.

## 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-4d83f4c1/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)