Online notepad | agent view

The same page content and links, with explicit tool capabilities. Tools marked with an API can run directly through HTTP. Other tools require the browser interface or are not connected yet.

Tool capabilities

{
  "id": "online-notepad",
  "category": "text-tools",
  "built": true,
  "requirements": "Edit plain text and open or download UTF-8 TXT files; offer opt-in browser autosave with a clear erase action; explain that local storage is device-specific, may be cleared and is not cloud backup.",
  "implementation": {
    "fields": [],
    "note": "Plain-text notes stay in this tab. Download to keep a copy; closing the tab clears unsaved text.",
    "experience": {
      "automatic": true,
      "single": false,
      "label": "Your text",
      "placeholder": "Hello world!",
      "help": "Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.",
      "action": null
    },
    "mode": "automatic",
    "interactive": false
  },
  "execution": "POST /api/v1/tools/online-notepad/run",
  "api": {
    "id": "online-notepad",
    "name": "Online notepad",
    "category": "text-tools",
    "description": "Write plain-text notes and download a copy.",
    "notes": "Plain-text notes stay in this tab. Download to keep a copy; closing the tab clears unsaved text.",
    "human_path": "/en/text-tools/online-notepad/",
    "method": "POST",
    "endpoint": "/api/v1/tools/online-notepad/run",
    "schema_url": "/api/v1/tools/online-notepad",
    "input_schema": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "input": {
          "type": "string",
          "maxLength": 1000000,
          "default": "",
          "description": "Plain text input. File tools use files instead unless otherwise documented."
        },
        "options": {
          "type": "object",
          "additionalProperties": false,
          "properties": {}
        }
      }
    },
    "output_schema": {
      "type": "object",
      "required": [
        "tool",
        "result"
      ],
      "properties": {
        "tool": {
          "type": "string"
        },
        "result": {
          "type": "object",
          "required": [
            "text",
            "files"
          ],
          "properties": {
            "text": {
              "type": [
                "string",
                "null"
              ]
            },
            "data": {
              "description": "Parsed JSON when the textual result is JSON."
            },
            "name": {
              "type": "string"
            },
            "mime": {
              "type": "string"
            },
            "files": {
              "type": "array",
              "items": {
                "type": "object",
                "required": [
                  "name",
                  "mime",
                  "bytes",
                  "base64"
                ],
                "properties": {
                  "name": {
                    "type": "string"
                  },
                  "mime": {
                    "type": "string"
                  },
                  "bytes": {
                    "type": "integer"
                  },
                  "base64": {
                    "type": "string",
                    "contentEncoding": "base64"
                  }
                }
              }
            }
          }
        }
      }
    },
    "processing": "Server; same transformation code as browser tools",
    "limits": {
      "request_bytes": 8388608,
      "input_characters": 1000000,
      "files_bytes": 5242880,
      "max_files": 0,
      "timeout_seconds": 12
    }
  },
  "agent_processing": "Server; same transformation code as browser tools",
  "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"
  }
}

Page guide

Write plain-text notes and download a copy.

Useful next steps

Word counter

Count words, characters and lines as you type.

Character counter

Count visible characters, words, lines and UTF-8 bytes.

Remove extra spaces

Tidy repeated spaces without losing line breaks.

How to use Online notepad

Enter your text in the input field.
The result updates as you type. Adjust the available settings if needed.
Review the result, then use Copy result or a download link when available.

What to expect

Write plain-text notes and download a copy. Notes remain in this tab only. Download your work before closing or refreshing the page.

Try a small example

Hello world