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Portable intent card · application-security

HTTP Header Diff API for agents

Compare two caller-supplied HTTP header maps case-insensitively while redacting Authorization, Cookie, Set-Cookie, and Proxy-Authorization values. Use after header or TLS inspection to identify configuration drift and security-sensitive changes. Returns bounded deterministic JSON for $0.001 USDC via x402 on Base; no URL fetch or retention.

HTTP Header Diff APIHTTP Header Diff for agentspay per result APIx402 APIno API key

Intent to transaction

One command, attributed.

The source header follows this discovery route through challenge, payment and delivery without exposing the buyer or request body.

npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/http-header-diff -m POST -H 'x-delx-source: intent-card-http-header-diff-api' --max-amount 0.001 -b '{"before":{"content-type":"text/html","strict-transport-security":"max-age=60"},"after":{"Content-Type":"text/html","Strict-Transport-Security":"max-age=31536000"}}'
Example inputPOST /api/v1/x402/http-header-diff
{
  "before": {
    "content-type": "text/html",
    "strict-transport-security": "max-age=60"
  },
  "after": {
    "Content-Type": "text/html",
    "Strict-Transport-Security": "max-age=31536000"
  }
}
Agent discoverydelx/intent-card/v1
{
  "intent": "HTTP Header Diff for an agent workflow",
  "tool_name": "util_http_header_diff",
  "price_usdc": "0.001",
  "machine_url": "https://commerce.delx.ai/intents/http-header-diff-api.json"
}

Portable and inspectable

Share the intent, not a directory search.