SEO Page Analyzer
Full on-page SEO audit for any URL. Score 0-100, meta tags, headings, schema markup, images, links, load time. Prioritized fixes. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"seo-analyzer": {
"url": "https://seo-analyzer.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl "https://seo-analyzer.api.klymax402.com/api/audit?url=https://example.com"
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
seo_audit_page | GET | /api/audit | $0.06 | Full SEO audit of a single URL |
seo_audit_batch | POST | /api/audit/batch | $0.40 | SEO audit of up to 10 URLs in batch |
seo_audit_page
Use this when you need to analyze a webpage's on-page SEO health. Returns a structured JSON audit with score 0-100 and prioritized recommendations.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
url | string | yes | Full URL to audit (e.g. https://example.com) |
Example response:
{"score":72,"title":{"content":"My Page","length":7},"headings":{"h1":1,"h2":3},"images":{"total":5,"missingAlt":2},"issues":[{"severity":"critical","message":"Missing meta description"}]}
When to use: optimizing any webpage, writing SEO recommendations, or auditing a client's site. Essential for competitive page-level analysis and content audits.
Not for: content extraction (use web_scrape_to_markdown), screenshots (use capture_screenshot), tech detection (use website_detect_tech_stack).
seo_audit_batch
Use this when you need to compare SEO health across multiple pages at once (up to 10 URLs). Returns the same full audit as seo_audit_page for each URL in a single call.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
urls | array | yes | Array of URLs (max 10) |
Example response:
{"results":[{"url":"https://a.com","score":85},{"url":"https://b.com","score":62}],"summary":{"avgScore":73,"worstUrl":"https://b.com"}}
When to use: competitor analysis, sitemap audits, or comparing landing pages side by side. Essential when benchmarking multiple pages in one workflow.
Not for: single URLs (use seo_audit_page), content extraction (use web_scrape_batch).
Example agent prompts
- "Analyze a webpage's on-page SEO health"
- "Compare SEO health across multiple pages at once (up to 10 URLs)"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT