SEO Page Analyzer

Full SEO analysis for any URL: 0~100 points, meta tags, headings, schema markup, images, links, load time, and prioritized fixes. It is call-based payment protocol x402 (USDC on Base L2) -- no API key required, no signup, no rate limit.

It's part of the klymax402 marketplace -- 100 x402 API for AI agents with one wallet and USDC on Base.

Startup -- MCP

Put into your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.).

{
  "mcpServers": {
    "seo-analyzer": {
      "url": "https://seo-analyzer.api.klymax402.com/mcp"
    }
  }
}

Related MCP server: @metricspot/mcp-server

Startup -- 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

Each x402-ready client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.

Tools

seo_audit_page

Used when you need to analyze the SEO state of the on-page in a webpage. Get a structured JSON audit result with 0-100 score and prioritized recommendations.

Parameters

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"}]}

Used for: when optimizing any webpage, writing SEO recommendations, or auditing your client's site. Essential for competitive page-level analysis and content audit.

Not suitable: content extraction (using web_scrape_to_markdown), screenshots (using capture_schema), technology detection (using website_detect_tech_stack).

se_scop_batch

Use when comparing the SEO status of multiple pages at once (up to 10 URLs). In one call, for each individual URL, return the same result as seo_audit_page. Example:

Parameters

Example response.

{"results":[{"url":"https://a.com","score":85},{"url":"https://b.com","score":62}],"summary":{"avgScore":73,"worstUrl":"https://b.com"}}

When used: for competitor analysis, sitemaps audits, or comparing landing pages at a glance. Essential for benchmarking multiple pages in a single flow.

Not appropriate: for a single URL (use seo_audit_page), content scraping (using web_scrape_batch).

Payment

• Protocol: x402 -- HTTP-native call-based billing, no signup, no API key

• Network: Base L2 (eip155:8453)

• Asset: USDC

• Facilitator: Coinbase CDP (main), PayAI (fallback)

• Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected resource metadata)

part of klymax402

AI agent is a collection of 100 x402 micropayment APIs target -- one wallet, USDC on Base, zero signup.

• Catalog: https://klymax402.com/llms.txt

• Complete API reference: https://klymax402.com/llms-full.txt

• Live stats: https://klymax402.com/stats

License

MIT