$ headless-seo-check http://127.0.0.1:4314 --urls /static,/isr,/cjk --json
--- stdout+stderr ---
headless-seo-check: checking http://127.0.0.1:4314 …
headless-seo-check: 3 of 3 URLs selected, from --urls
{
  "tool": "headless-seo-check",
  "version": "0.1.0",
  "checked_at_unix": 1786210249,
  "interrupted": false,
  "notes": [],
  "fatal": null,
  "site": "http://127.0.0.1:4314",
  "discovery": {
    "source": "--urls",
    "total": 3,
    "checked": 3
  },
  "pages": [
    {
      "url": "http://127.0.0.1:4314/static",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 22,
      "render_mode": "unclear",
      "words": 325,
      "internal_links": 17,
      "findings": [
        {
          "kind": "render-mode-unclear",
          "severity": "info",
          "message": "rendering mode undetermined — the response headers say nothing about caching",
          "detail": [
            "cache-control: no-cache, must-revalidate",
            "checked twice, the second response said no more"
          ]
        },
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4314/isr",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 22,
      "render_mode": "unclear",
      "words": 324,
      "internal_links": 17,
      "findings": [
        {
          "kind": "render-mode-unclear",
          "severity": "info",
          "message": "rendering mode undetermined — the response headers say nothing about caching",
          "detail": [
            "cache-control: no-cache, must-revalidate",
            "checked twice, the second response said no more"
          ]
        },
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    },
    {
      "url": "http://127.0.0.1:4314/cjk",
      "outcome": "checked",
      "status": 200,
      "ttfb_ms": 22,
      "render_mode": "unclear",
      "words": 268,
      "internal_links": 17,
      "findings": [
        {
          "kind": "render-mode-unclear",
          "severity": "info",
          "message": "rendering mode undetermined — the response headers say nothing about caching",
          "detail": [
            "cache-control: no-cache, must-revalidate",
            "checked twice, the second response said no more"
          ]
        },
        {
          "kind": "canonical-missing",
          "severity": "warn",
          "message": "no canonical link in the served HTML"
        }
      ]
    }
  ],
  "summary": {
    "checked": 3,
    "dynamic": 0,
    "unclear": 3,
    "noindex_header": 0,
    "hreflang_drift": 0,
    "hreflang_dead_target": 0,
    "empty_html": 0,
    "sitemap_errors": 0,
    "unreachable": 0,
    "blocking": 0
  },
  "warnings": 3,
  "exit_code": 0
}
--- exit code: 0 ---