Run WCAG accessibility scans and contrast checks via a11y-mcp-server (npx)

{
  "server": "[email protected]",
  "transport": "stdio",
  "spawn": "npx -y [email protected]",
  "engine": "[email protected]",
  "handshake": {
    "initialize": {
      "protocolVersion": "2024-11-05",
      "clientInfo": {
        "name": "pathfinder",
        "version": "1.0.0"
      }
    },
    "serverInfo": {
      "name": "axe-accessibility-server",
      "version": "0.1.0"
    },
    "tools_count": 6
  },
  "tools_list": ["test_accessibility", "test_html_string", "get_rules", "check_color_contrast", "check_aria_attributes", "check_orientation_lock"],
  "call_1": {
    "tool": "check_color_contrast",
    "input": {
      "foreground": "#777777",
      "background": "#ffffff",
      "fontSize": 14,
      "isBold": false
    },
    "output": {
      "originalInput": {
        "foreground": "#777777",
        "background": "#ffffff"
      },
      "normalizedColors": {
        "foregroundHex": "#777777",
        "backgroundHex": "#ffffff",
        "foregroundRgb": "rgb(119, 119, 119)",
        "backgroundRgb": "rgb(255, 255, 255)"
      },
      "fontSize": 14,
      "isBold": false,
      "contrastRatio": 4.5,
      "isLargeText": false,
      "passesWCAG2AA": true,
      "requiredRatioForAA": 4.5,
      "passesWCAG2AAA": false,
      "requiredRatioForAAA": 7,
      "helpUrl": "https://dequeuniversity.com/rules/axe/4.10/color-contrast"
    },
    "isError": false
  },
  "call_2": {
    "tool": "test_accessibility",
    "input": {
      "url": "https://example.com",
      "tags": ["wcag2aa"]
    },
    "output": {
      "violations": [],
      "passes": 2,
      "incomplete": 0,
      "inapplicable": 1,
      "timestamp": "2026-06-11T16:19:36.176Z",
      "url": "https://example.com/",
      "testEngine": {
        "name": "axe-core",
        "version": "4.11.4"
      },
      "testEnvironment": {
        "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/100.0.4889.0 Safari/537.36",
        "windowWidth": 1280,
        "windowHeight": 800
      }
    },
    "isError": false
  }
}