Ciro Cesar Maciel — Free Tools

Generates a strong random password with a cryptographically secure generator. WHEN TO USE: the user asks for a password or a random key. HOW IT WORKS: always uses upper and lower case letters; numbers and symbols are optional. Each selected kind of character appears at least once. length: 8 to 64 (default 16). RETURNS: password, the options used, and link — this tool's web page with the same options. The password is never in the link. Show the password to the user as it is; do not store it or repeat it elsewhere.

{
  "type": "object",
  "properties": {
    "length": {
      "type": "integer",
      "minimum": 8,
      "maximum": 64,
      "default": 16,
      "description": "Number of characters, 8 to 64. Default 16."
    },
    "numbers": {
      "type": "boolean",
      "default": true,
      "description": "Include digits 0-9. Default true."
    },
    "symbols": {
      "type": "boolean",
      "default": true,
      "description": "Include symbols such as !@#$%. Default true. Set false for systems that reject symbols."
    }
  },
  "additionalProperties": false
}

Converts one moment across several time zones, daylight saving time included. WHEN TO USE: "what time is it in…", scheduling a meeting across cities, checking whether a time falls at night or on another day somewhere. HOW IT WORKS: - zones: IANA time zone names in Area/City form — America/Sao_Paulo, Europe/Lisbon, Asia/Tokyo, UTC. Not city names alone, abbreviations (EST, BRT) or offsets (GMT-3). The FIRST zone is the reference for date and hour. 1 to 12 zones. - date (YYYY-MM-DD) and hour (0–23) are read in the first zone. Without them: the current moment. Only hour: that hour today in the first zone. Only date: that day at the current hour. - format: 24h (14:00) or 12h (2:00 PM). RETURNS: the moment in UTC and, for each zone, its local date, weekday, time, UTC offset and dayShift (+1 = next day, -1 = previous day, relative to the first zone). link: this tool's web page with the same comparison. ERRORS name the unknown zone or the invalid date; fix it and call again.

{
  "type": "object",
  "properties": {
    "zones": {
      "type": "array",
      "items": {
        "type": "string",
        "description": "An IANA time zone name, such as America/Sao_Paulo or Europe/London."
      },
      "minItems": 1,
      "maxItems": 12,
      "default": [
        "America/Sao_Paulo",
        "America/New_York",
        "Europe/London"
      ],
      "description": "IANA time zone names, such as America/Sao_Paulo or Europe/London. The first one is the reference. 1 to 12."
    },
    "date": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "The day, as YYYY-MM-DD, in the first time zone. Defaults to today there."
    },
    "hour": {
      "type": "integer",
      "minimum": 0,
      "maximum": 23,
      "description": "The hour, 0 to 23, in the first time zone. Defaults to the current hour there."
    },
    "format": {
      "type": "string",
      "enum": [
        "24h",
        "12h"
      ],
      "default": "24h",
      "description": "How times are written: 24h (14:00) or 12h (2:00 PM)."
    }
  },
  "additionalProperties": false
}

Draws a chart from a CSV table and returns it as an image. WHEN TO USE: the user wants to see data as a chart, or needs a chart image for a document, a README, a slide or a chat. HOW IT WORKS: - csv: a header row, then data rows. First column: the category (or x value); the next columns: numbers. Use a comma or semicolon as separator; decimals with a point, or with a comma when the separator is a semicolon. Up to 20,000 characters. - chartType, and what each one needs: bar, horizontalBar, line, area, pie, donut, funnel — one category column + one numeric column; multiline — one x column + one or more numeric columns (one line per column); scatter — two numeric columns (x, y); heatmap — three columns: row, column, value. - title: optional, drawn at the top. RETURNS: - image: a PNG address that IS the chart (rendered on request) — put it straight into Markdown () or an <img>. imageSvg: the same as SVG, sharper where SVG is accepted. Both are null when the CSV is too long to fit in an address; then use svg. - svg: the chart as SVG markup. - link: this tool's web page with the same chart, to edit it. ERRORS say what is wrong with the CSV (missing columns, non-numeric values, too many rows); fix the data and call again.

{
  "type": "object",
  "properties": {
    "chartType": {
      "type": "string",
      "enum": [
        "bar",
        "horizontalBar",
        "line",
        "multiline",
        "area",
        "pie",
        "donut",
        "scatter",
        "funnel",
        "heatmap"
      ],
      "default": "bar",
      "description": "The kind of chart. See the tool description for the columns each kind needs."
    },
    "csv": {
      "type": "string",
      "minLength": 1,
      "maxLength": 20000,
      "description": "The data as CSV with a header row. First column: category or x value; next columns: numbers. Up to 20,000 characters."
    },
    "title": {
      "type": "string",
      "maxLength": 120,
      "default": "",
      "description": "Optional title drawn at the top of the chart. Empty for none."
    }
  },
  "required": [
    "csv"
  ],
  "additionalProperties": false
}

Reads a text aloud with a Microsoft neural voice (the voices of Edge's "Read aloud") and returns an MP3. WHEN TO USE: the user wants to hear a text or needs an audio file of it — narration, audiobook, lesson, voice-over, a message read aloud. HOW IT WORKS: - Up to 50,000 characters per call. A text over 1,000 characters is split by sentence into parts of up to 1,000; each part is voiced in order and the parts are joined into ONE MP3. Progress is reported per part ("Gerando áudio... 3 de 18"), so keep waiting while it arrives. - It takes time: about 5 seconds per part. 5,000 characters ≈ 30 s; 16,000 ≈ 2 min; 50,000 ≈ 6 min. - Over 50,000 characters: split the text at paragraph boundaries into several calls with the same voice and speed, and give the user every link, in order. - Send the text as it should be HEARD: remove Markdown marks (**, #, list bullets), URLs, emojis and tables. Do not summarize, translate or reword unless the user asked — every word you send is read. - voice: choose one in the language of the text (the prefix is language-region: pt-BR, pt-PT, en-US, es-MX…). Brazilian Portuguese: pt-BR-FranciscaNeural (female, default) or pt-BR-AntonioNeural (male). - speed: 1 is the voice's natural pace; 0.9 suits calm narration, 1.2 a quick read. RETURNS: - audioUrl: the complete MP3 to download, valid for 7 days. Always give this link to the user. If you can run commands, you can download it (e.g. curl -o audio.mp3 <audioUrl>). - audio: the MP3 itself, only when it is short (about 1.5 minutes or less); otherwise null. - seconds (duration), parts, characters, voice, speed. - link: this tool's web page with the same voice and speed (the text is not in it). ERRORS say what happened and what to do next. If a part fails, no audio is produced and a new call starts again from part 1.

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "minLength": 1,
      "maxLength": 50000,
      "description": "The text to read aloud: 1 to 50,000 characters. Plain text as it should be heard — no Markdown, URLs or emojis. Longer texts: split into several calls."
    },
    "voice": {
      "type": "string",
      "enum": [
        "pt-BR-FranciscaNeural",
        "pt-BR-AntonioNeural",
        "pt-PT-RaquelNeural",
        "pt-PT-DuarteNeural",
        "en-US-AriaNeural",
        "en-US-JennyNeural",
        "en-US-GuyNeural",
        "en-US-ChristopherNeural",
        "en-GB-SoniaNeural",
        "en-GB-RyanNeural",
        "en-GB-LibbyNeural",
        "en-AU-NatashaNeural",
        "en-AU-WilliamNeural",
        "es-ES-ElviraNeural",
        "es-ES-AlvaroNeural",
        "es-MX-DaliaNeural",
        "es-MX-JorgeNeural",
        "fr-FR-DeniseNeural",
        "fr-FR-HenriNeural",
        "fr-CA-SylvieNeural",
        "fr-CA-JeanNeural",
        "de-DE-KatjaNeural",
        "de-DE-ConradNeural",
        "it-IT-ElsaNeural",
        "it-IT-DiegoNeural",
        "ja-JP-NanamiNeural",
        "ja-JP-KeitaNeural",
        "zh-CN-XiaoxiaoNeural",
        "zh-CN-YunxiNeural",
        "ko-KR-SunHiNeural",
        "ko-KR-InJoonNeural",
        "ru-RU-SvetlanaNeural",
        "ru-RU-DmitryNeural",
        "hi-IN-SwaraNeural",
        "hi-IN-MadhurNeural",
        "ar-SA-ZariyahNeural",
        "ar-SA-HamedNeural",
        "nl-NL-ColetteNeural",
        "nl-NL-MaartenNeural",
        "sv-SE-SofieNeural",
        "sv-SE-MattiasNeural",
        "nb-NO-PernilleNeural",
        "nb-NO-FinnNeural",
        "da-DK-ChristelNeural",
        "da-DK-JeppeNeural",
        "pl-PL-ZofiaNeural",
        "pl-PL-MarekNeural",
        "tr-TR-EmelNeural",
        "tr-TR-AhmetNeural"
      ],
      "default": "pt-BR-FranciscaNeural",
      "description": "A Microsoft neural voice; one of the listed ids. Pick one in the text's language — the prefix is language-region (pt-BR, en-US, es-MX…). Default: pt-BR-FranciscaNeural."
    },
    "speed": {
      "type": "number",
      "minimum": 0.5,
      "maximum": 2,
      "default": 1,
      "description": "Reading speed, 0.5 to 2. 1 is the voice's natural pace; 0.9 calm narration; 1.25 a quick read."
    }
  },
  "required": [
    "text"
  ],
  "additionalProperties": false
}

Fetches a public web page and returns its content as clean Markdown. WHEN TO USE: you need to read a page — documentation, an article, a product page — to answer, summarize or quote it; or the user wants a page as Markdown. HOW IT WORKS: - url: a public http(s) address. Private networks, localhost and addresses with credentials are refused. - Reads the HTML the server sends (like a simple browser, without running JavaScript). Pages that build their content with JavaScript have no text to convert — the error says so. - onlyMainContent (default true) drops menus, headers, footers, sidebars, cookie banners and ads. Set false to keep the whole page. - pages above 1 also follows links on the same site (same folder and below), breadth-first, up to that many pages (max 20), respecting robots.txt. Slower: a few seconds per page. - Limits per page: 15 seconds and 5 MB. PDFs and non-HTML files are not converted. RETURNS: for each page, its Markdown with absolute links and images, plus title, description and language when the page has them; pages that failed are listed with the reason. link: this tool's web page with the same request. ERRORS say why the page could not be read and whether retrying makes sense.

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "format": "uri",
      "maxLength": 2048,
      "description": "The page to convert: a public http or https address."
    },
    "pages": {
      "type": "integer",
      "minimum": 1,
      "maximum": 20,
      "default": 1,
      "description": "How many pages of the same site to convert, 1 to 20, starting at url and following its links. 1 (default) converts only url."
    },
    "onlyMainContent": {
      "type": "boolean",
      "default": true,
      "description": "true (default): keep only the content, without menus, footers, sidebars, cookie banners and ads. false: the whole page."
    }
  },
  "required": [
    "url"
  ],
  "additionalProperties": false
}