# x402 Keyword Plan API

> x402 Keyword Plan API is a paid API for AI agents from products.54.168.247.83.sslip.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Generates a clustered keyword plan with search volume estimates, competition scores, and content recommendations for a given seed topic and market.

## Facts

- Endpoint: POST https://products.54.168.247.83.sslip.io/v1/keyword_plan?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-keyword-plan-api-6f69e71d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DL8-FLYkveJP-YD72xGT2

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 x402-keyword-plan-api-6f69e71d -d '<json body>'
```

Example prompt: Generate a keyword plan for 'AI writing tools' targeting the US market — give me 5 clusters, at least 50 keywords, with a minimum search volume of 500 and max competition of 0.4.

## When to prefer this

Choose this endpoint when you need a full keyword research deliverable — clustered, scored, and ready for a content or ad strategy — rather than just a list of keywords. It is especially useful when you want to pay per research session with no API key or subscription, and when you need integrated content recommendations alongside volume and competition data.

## Known failure modes

- Invalid or missing seed keyword returns an error
- Market code not recognized may produce generic or empty results
- Requesting too many clusters relative to available keyword data may result in sparse clusters
- Payment of $10 USDC via x402 must succeed before the call is processed; failed payment returns a 402 error
- Very high min_volume filters may return fewer keywords than requested

## How this service works

Pay-per-call agent utilities: pre-flight compliance classification, pre-flight URL safety, composed company/market research, live web search, page scraping, and keyword planning. Pay $0.001 USDC (research/classify/url_safety/search/scrape) or $0.002 USDC (keyword_plan) per call via x402 -- no API keys, no signup.

## Output

A structured keyword plan in markdown format containing labeled clusters, individual keywords with estimated search volume and competition scores, and actionable content recommendations such as comparison guides or blog post ideas.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "seed": {
   "type": "string"
  },
  "market": {
   "type": "string"
  },
  "clusters": {
   "type": "integer"
  },
  "min_volume": {
   "type": "integer"
  },
  "num_keywords": {
   "type": "integer"
  },
  "max_competition": {
   "type": "number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": "# Keyword Plan: x402 agent tools\n## Cluster 1: agent tooling\n- x402 keywords (volume 1.2K, competition 0.3)\n## Content recommendations\n- Build a comparison guide",
  "status": "success"
 },
 "description": "Clustered keyword plan with search volume, competition scores, and content recommendations."
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-keyword-plan-api-6f69e71d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from products.54.168.247.83.sslip.io](https://www.zero.xyz/host/products.54.168.247.83.sslip.io/llms.txt)