Http Headers X402

HTTP Headers Analyzer API

Analyze HTTP response headers -- security score, HSTS/CSP check, server detection, caching config. Score 0-100. 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": {
    "http-headers": {
      "url": "https://http-headers.api.klymax402.com/mcp"
    }
  }
}

Quickstart -- HTTP (x402)

curl -X POST "https://http-headers.api.klymax402.com/api/analyze" \
  -H "Content-Type: application/json" \
  -d '{"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
network_analyze_headers	POST	/api/analyze	$0.003	Analyze HTTP response headers for a URL

network_analyze_headers

Use this when you need to analyze HTTP response headers of a URL for security and configuration. Returns a full header audit in JSON.

Parameters

Name	Type	Required	Description
url	string	yes	Full URL to analyze (e.g. https://example.com)

Example response:

{"url":"https://example.com","securityScore":85,"securityHeaders":{"hsts":true,"csp":true,"xFrameOptions":true,"xContentType":true,"referrerPolicy":false},"server":"nginx","caching":{"cacheControl":"max-age=3600","etag":true},"recommendations":["Add Referrer-Policy header"]}

When to use: security audits, DevOps monitoring, compliance checks, and verifying proper header configuration after deployment.

Not for: SSL certificate check (use security_check_ssl), web scraping (use web_scrape_to_markdown), GDPR compliance (use compliance_scan_gdpr).

Example agent prompts

• "Analyze HTTP response headers of a URL for security and configuration"

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