{
  "title": "Long path checker",
  "human_url": "https://happytails.ai/en/developer-tools/long-path-checker/",
  "agent_url": "https://happytails.ai/agents/en/developer-tools/long-path-checker/",
  "language": "en",
  "markdown_url": "https://happytails.ai/en/developer-tools/long-path-checker.md",
  "content": "Long path checker\nMeasure every selected path against a destination folder and common or custom length limits.\nHow can we improve this tool?\nReport a problem or share an idea.\nPlease leave out private information. Your message and the tool name go to our team via PostHog.\nHow to use Long path checker\nChoose the folder you want to inspect.\nReview the options and run the check.\nRead the result and download the report.\nUseful next steps\nUnicode filename collision checker\nFolder tree exporter\nFile hash\nChoose one local folder\nUse the folder picker and confirm the files you want to inspect. Nested paths are preserved. Choosing another folder replaces the selection.\nReview the result\nMeasure every selected path against a destination folder and common or custom length limits.\nDownload your report\nSave the report or manifest to keep the results. Your source files are unchanged, and the processing stays in your browser.",
  "content_format": "text/plain",
  "visibility": "public",
  "links": [
    {
      "name": "Unicode filename collision checker",
      "url": "https://happytails.ai/en/developer-tools/unicode-filename-collision-checker/"
    },
    {
      "name": "Folder tree exporter",
      "url": "https://happytails.ai/en/developer-tools/folder-tree-exporter/"
    },
    {
      "name": "File hash",
      "url": "https://happytails.ai/en/developer-tools/file-hash/"
    }
  ],
  "tool": {
    "id": "long-path-checker",
    "category": "developer-tools",
    "built": true,
    "requirements": "Up to 2,000 files. Windows values use UTF-16 code units, and POSIX values use UTF-8 bytes. Limits exclude a terminating NUL. The selected root is replaced by your destination base. Actual filesystem and application limits can differ.",
    "implementation": {
      "fields": [
        {
          "key": "platform",
          "label": "Destination path rules",
          "value": "Windows legacy",
          "type": "select",
          "values": [
            "Windows legacy",
            "Windows extended path",
            "POSIX UTF-8",
            "Custom UTF-16",
            "Custom UTF-8"
          ]
        },
        {
          "key": "base",
          "label": "Destination folder",
          "value": "C:\\Destination",
          "type": "text"
        },
        {
          "key": "limit",
          "label": "Custom maximum path length",
          "value": 259,
          "type": "number",
          "min": 1,
          "max": 100000,
          "showWhen": {
            "platform": [
              "Custom UTF-16",
              "Custom UTF-8"
            ]
          }
        },
        {
          "key": "componentLimit",
          "label": "Custom maximum name length",
          "value": 255,
          "type": "number",
          "min": 1,
          "max": 100000,
          "showWhen": {
            "platform": [
              "Custom UTF-16",
              "Custom UTF-8"
            ]
          }
        }
      ],
      "files": true,
      "input": false,
      "directory": true,
      "multiple": true,
      "deferImagePreview": true,
      "presentation": "metrics",
      "metadataOnly": true,
      "maxFileBytes": 9007199254740991,
      "uploadHelp": "Choose one folder, up to 2,000 files. File contents are not read.",
      "note": "Inspect names, relative paths and file sizes locally. No file contents are read. Empty folders and inaccessible entries are not exposed by the browser folder picker.",
      "experience": {
        "automatic": false,
        "single": false,
        "inputMaxLength": 1000000,
        "inputMode": "text",
        "label": "Your text",
        "placeholder": "Type or paste your input…",
        "help": "Up to 1,000,000 characters. Review the settings before running.",
        "action": null
      },
      "mode": "explicit",
      "interactive": false
    },
    "execution": "Browser interface",
    "api": null,
    "browser_agent": {
      "supported": true,
      "name": "run_current_tool",
      "discovery": "WebMCP on the human page in a supporting browser",
      "verification": "See audit/API-AUDIT.md; availability is not verification"
    }
  },
  "markdown": "# Long path checker\n\n- Human page: https://happytails.ai/en/developer-tools/long-path-checker/\n- Markdown: https://happytails.ai/en/developer-tools/long-path-checker.md\n- Structured JSON: https://happytails.ai/agents/en/developer-tools/long-path-checker/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `long-path-checker` |\n| Category | developer-tools |\n| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |\n| Browser execution | Use the visible action or interactive controls. |\n| Browser processing | Browser; see tool notes for network behavior. |\n| HTTP API | Not callable through HTTP. |\n| Browser-agent interface | run_current_tool |\n\n### Implementation notes\n\nInspect names, relative paths and file sizes locally. No file contents are read. Empty folders and inaccessible entries are not exposed by the browser folder picker.\n\n### Inputs and settings\n\nNo free-text input is required. Use the file inputs and/or settings below.\n\nAccepted browser files: `See implementation notes`. Multiple files are supported.\n\nBrowser file-input limit: no total size limit. HTTP limits can differ.\n\n| Setting | Meaning | Control type | Default | Constraints |\n| --- | --- | --- | --- | --- |\n| `platform` | Destination path rules | select | \"Windows legacy\" | Allowed: Windows legacy, Windows extended path, POSIX UTF-8, Custom UTF-16, Custom UTF-8 |\n| `base` | Destination folder | text | \"C:\\\\Destination\" |  |\n| `limit` | Custom maximum path length | number | 259 | min=1 max=100000 |\n| `componentLimit` | Custom maximum name length | number | 255 | min=1 max=100000 |\n\n### Browser-agent workflow\n\n1. Open the human page in a browser that supports WebMCP.\n2. Discover the interface exposed by that page; use its actual schema.\n3. Select files on the page first when the tool requires files.\n4. Call `run_current_tool` with valid input and settings.\n5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.\n\nCalls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.\n\n### Planning specification\n\nUp to 2,000 files. Windows values use UTF-16 code units, and POSIX values use UTF-8 bytes. Limits exclude a terminating NUL. The selected root is replaced by your destination base. Actual filesystem and application limits can differ.\n\nThis describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.\n\n### Complete machine-readable capability record\n\n```json\n{\n  \"id\": \"long-path-checker\",\n  \"category\": \"developer-tools\",\n  \"built\": true,\n  \"requirements\": \"Up to 2,000 files. Windows values use UTF-16 code units, and POSIX values use UTF-8 bytes. Limits exclude a terminating NUL. The selected root is replaced by your destination base. Actual filesystem and application limits can differ.\",\n  \"implementation\": {\n    \"fields\": [\n      {\n        \"key\": \"platform\",\n        \"label\": \"Destination path rules\",\n        \"value\": \"Windows legacy\",\n        \"type\": \"select\",\n        \"values\": [\n          \"Windows legacy\",\n          \"Windows extended path\",\n          \"POSIX UTF-8\",\n          \"Custom UTF-16\",\n          \"Custom UTF-8\"\n        ]\n      },\n      {\n        \"key\": \"base\",\n        \"label\": \"Destination folder\",\n        \"value\": \"C:\\\\Destination\",\n        \"type\": \"text\"\n      },\n      {\n        \"key\": \"limit\",\n        \"label\": \"Custom maximum path length\",\n        \"value\": 259,\n        \"type\": \"number\",\n        \"min\": 1,\n        \"max\": 100000,\n        \"showWhen\": {\n          \"platform\": [\n            \"Custom UTF-16\",\n            \"Custom UTF-8\"\n          ]\n        }\n      },\n      {\n        \"key\": \"componentLimit\",\n        \"label\": \"Custom maximum name length\",\n        \"value\": 255,\n        \"type\": \"number\",\n        \"min\": 1,\n        \"max\": 100000,\n        \"showWhen\": {\n          \"platform\": [\n            \"Custom UTF-16\",\n            \"Custom UTF-8\"\n          ]\n        }\n      }\n    ],\n    \"files\": true,\n    \"input\": false,\n    \"directory\": true,\n    \"multiple\": true,\n    \"deferImagePreview\": true,\n    \"presentation\": \"metrics\",\n    \"metadataOnly\": true,\n    \"maxFileBytes\": 9007199254740991,\n    \"uploadHelp\": \"Choose one folder, up to 2,000 files. File contents are not read.\",\n    \"note\": \"Inspect names, relative paths and file sizes locally. No file contents are read. Empty folders and inaccessible entries are not exposed by the browser folder picker.\",\n    \"experience\": {\n      \"automatic\": false,\n      \"single\": false,\n      \"inputMaxLength\": 1000000,\n      \"inputMode\": \"text\",\n      \"label\": \"Your text\",\n      \"placeholder\": \"Type or paste your input…\",\n      \"help\": \"Up to 1,000,000 characters. Review the settings before running.\",\n      \"action\": null\n    },\n    \"mode\": \"explicit\",\n    \"interactive\": false\n  },\n  \"execution\": \"Browser interface\",\n  \"api\": null,\n  \"browser_agent\": {\n    \"supported\": true,\n    \"name\": \"run_current_tool\",\n    \"discovery\": \"WebMCP on the human page in a supporting browser\",\n    \"verification\": \"See audit/API-AUDIT.md; availability is not verification\"\n  }\n}\n```\n\n## Page guide\n\nMeasure every selected path against a destination folder and common or custom length limits.\n\nHow can we improve this tool?\n\nReport a problem or share an idea.\n\nPlease leave out private information. Your message and the tool name go to our team via PostHog.\n\n### How to use Long path checker\n\n1. Choose the folder you want to inspect.\n2. Review the options and run the check.\n3. Read the result and download the report.\n\n## Useful next steps\n\n- [Unicode filename collision checker](https://happytails.ai/en/developer-tools/unicode-filename-collision-checker/) ([Markdown](https://happytails.ai/en/developer-tools/unicode-filename-collision-checker.md))\n\n- [Folder tree exporter](https://happytails.ai/en/developer-tools/folder-tree-exporter/) ([Markdown](https://happytails.ai/en/developer-tools/folder-tree-exporter.md))\n\n- [File hash](https://happytails.ai/en/developer-tools/file-hash/) ([Markdown](https://happytails.ai/en/developer-tools/file-hash.md))\n\n## Choose one local folder\n\nUse the folder picker and confirm the files you want to inspect. Nested paths are preserved. Choosing another folder replaces the selection.\n\n### Review the result\n\nMeasure every selected path against a destination folder and common or custom length limits.\n\n### Download your report\n\nSave the report or manifest to keep the results. Your source files are unchanged, and the processing stays in your browser.\n"
}