# SpyFu Lost Ranks Keywords

> SpyFu Lost Ranks 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 2026-09-15).

Retrieves keywords for which a domain has recently lost its search engine rankings

## Facts

- Endpoint: GET https://spyfu.x402.paysponge.com/apis/serp_api/v2/seo/getLostRanksKeywords
- 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-0ef78994
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZFwKaVBF0mINC3p8yncjA

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-0ef78994
```

Example prompt: Can you pull up all the keywords that example.com has recently lost its search rankings for using SpyFu, so I can see where our organic visibility dropped?

## When to prefer this

Use this endpoint when you need to identify which specific keywords a domain has recently lost rankings for, enabling SEO gap analysis, competitor monitoring, or recovery planning. Prefer this over getJustFellOffKeywords when you need the full list of lost-rank keywords rather than only very recently dropped ones.

## Known failure modes

- Missing required domain parameter returns 400 error
- Invalid domain format causes malformed request
- Domain with no tracked history returns empty results
- Payment failure or insufficient USDC balance returns 402 error
- Rate limiting may return 429 if called too frequently
- SpyFu backend unavailability returns 503 error

## How this service works

GET /apis/serp_api/v2/seo/getLostRanksKeywords

## Output

Returns a list of keywords for which the queried domain has recently lost its search engine rankings, including details about the keywords and associated ranking data from 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-0ef78994/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)