{
  "title": "Random letter generator",
  "human_url": "https://happytails.ai/en/education-tools/random-letter-generator/",
  "agent_url": "https://happytails.ai/agents/en/education-tools/random-letter-generator/",
  "language": "en",
  "markdown_url": "https://happytails.ai/en/education-tools/random-letter-generator.md",
  "content": "Random letter generator\nPick random letters for games, prompts or practice.\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 Random letter generator\nEnter the values you want to calculate and choose the relevant units or settings.\nReview the settings, then choose Run Random letter generator.\nReview the result, then use Copy result or a download link when available.\nUseful next steps\nWheel spinner and random name picker\nRandom team generator\nRandom number\nHow to use it\nChoose how many letters you need, uppercase or lowercase, and whether to separate them with spaces. Generate again for a new independent selection.\nA worked example\nChoose five uppercase letters with spaces to get a result such as Q M A T B. Your result will vary and may include repeated letters.\nWhat to know\nEach A-Z letter is selected using your browser's cryptographic random source. The tool generates up to 1,000 letters at a time. It is not a complete password generator.",
  "content_format": "text/plain",
  "visibility": "public",
  "links": [
    {
      "name": "Wheel spinner and random name picker",
      "url": "https://happytails.ai/en/education-tools/wheel-spinner/"
    },
    {
      "name": "Random team generator",
      "url": "https://happytails.ai/en/education-tools/random-team-generator/"
    },
    {
      "name": "Random number",
      "url": "https://happytails.ai/en/calculators/random-number/"
    }
  ],
  "tool": {
    "id": "random-letter-generator",
    "category": "education-tools",
    "built": true,
    "requirements": "Each A-Z letter is selected using your browser's cryptographic random source. The tool generates up to 1,000 letters at a time. It is not a complete password generator.",
    "implementation": {
      "fields": [
        {
          "key": "count",
          "label": "Number of letters",
          "value": 10,
          "type": "number",
          "min": 1,
          "max": 1000,
          "step": 1
        },
        {
          "key": "case",
          "label": "Letter case",
          "value": "Uppercase",
          "type": "select",
          "values": [
            "Uppercase",
            "Lowercase"
          ]
        },
        {
          "key": "separator",
          "label": "Separator",
          "value": "Spaces",
          "type": "select",
          "values": [
            "Spaces",
            "None"
          ]
        }
      ],
      "input": false,
      "note": "Chooses independent A-Z letters with the browser’s cryptographic random source. Repeated letters are possible. This is not a password generator.",
      "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": "# Random letter generator\n\n- Human page: https://happytails.ai/en/education-tools/random-letter-generator/\n- Markdown: https://happytails.ai/en/education-tools/random-letter-generator.md\n- Structured JSON: https://happytails.ai/agents/en/education-tools/random-letter-generator/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `random-letter-generator` |\n| Category | education-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\nChooses independent A-Z letters with the browser’s cryptographic random source. Repeated letters are possible. This is not a password generator.\n\n### Inputs and settings\n\nNo free-text input is required. Use the file inputs and/or settings below.\n\n| Setting | Meaning | Control type | Default | Constraints |\n| --- | --- | --- | --- | --- |\n| `count` | Number of letters | number | 10 | min=1 max=1000 step=1 |\n| `case` | Letter case | select | \"Uppercase\" | Allowed: Uppercase, Lowercase |\n| `separator` | Separator | select | \"Spaces\" | Allowed: Spaces, None |\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\nEach A-Z letter is selected using your browser's cryptographic random source. The tool generates up to 1,000 letters at a time. It is not a complete password generator.\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\": \"random-letter-generator\",\n  \"category\": \"education-tools\",\n  \"built\": true,\n  \"requirements\": \"Each A-Z letter is selected using your browser's cryptographic random source. The tool generates up to 1,000 letters at a time. It is not a complete password generator.\",\n  \"implementation\": {\n    \"fields\": [\n      {\n        \"key\": \"count\",\n        \"label\": \"Number of letters\",\n        \"value\": 10,\n        \"type\": \"number\",\n        \"min\": 1,\n        \"max\": 1000,\n        \"step\": 1\n      },\n      {\n        \"key\": \"case\",\n        \"label\": \"Letter case\",\n        \"value\": \"Uppercase\",\n        \"type\": \"select\",\n        \"values\": [\n          \"Uppercase\",\n          \"Lowercase\"\n        ]\n      },\n      {\n        \"key\": \"separator\",\n        \"label\": \"Separator\",\n        \"value\": \"Spaces\",\n        \"type\": \"select\",\n        \"values\": [\n          \"Spaces\",\n          \"None\"\n        ]\n      }\n    ],\n    \"input\": false,\n    \"note\": \"Chooses independent A-Z letters with the browser’s cryptographic random source. Repeated letters are possible. This is not a password generator.\",\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\nPick random letters for games, prompts or practice.\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 Random letter generator\n\n1. Enter the values you want to calculate and choose the relevant units or settings.\n2. Review the settings, then choose Run Random letter generator.\n3. Review the result, then use Copy result or a download link when available.\n\n## Useful next steps\n\n- [Wheel spinner and random name picker](https://happytails.ai/en/education-tools/wheel-spinner/) ([Markdown](https://happytails.ai/en/education-tools/wheel-spinner.md))\n\n- [Random team generator](https://happytails.ai/en/education-tools/random-team-generator/) ([Markdown](https://happytails.ai/en/education-tools/random-team-generator.md))\n\n- [Random number](https://happytails.ai/en/calculators/random-number/) ([Markdown](https://happytails.ai/en/calculators/random-number.md))\n\n## How to use it\n\nChoose how many letters you need, uppercase or lowercase, and whether to separate them with spaces. Generate again for a new independent selection.\n\n### A worked example\n\nChoose five uppercase letters with spaces to get a result such as Q M A T B. Your result will vary and may include repeated letters.\n\n### What to know\n\nEach A-Z letter is selected using your browser's cryptographic random source. The tool generates up to 1,000 letters at a time. It is not a complete password generator.\n"
}