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20 free dev tools: JSON/YAML, XML/SQL, Cron, SEO, QR code, URL shortener, cron tasks, files

Developer Tools Utilities

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ai_text_generate

AI-powered text generation: copywriting, naming, slogans, catchy titles, praise/replies, couplets. Powered by GLM-4.7-Flash (free, 10k calls/day).

inputstring, required

Input text or topic (max 500 chars)

typestring

Generation type (default: copywriting)

stylestring

Additional style requirement (optional)

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Tools (29)

ai_text_generate

AI-powered text generation: copywriting, naming, slogans, catchy titles, praise/replies, couplets. Powered by GLM-4.7-Flash (free, 10k calls/day).

Argument	Type	Description
type	string	Generation type (default: copywriting)
input*	string	Input text or topic (max 500 chars)
style	string	Additional style requirement (optional)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "input"
  ],
  "properties": {
    "type": {
      "enum": [
        "copywriting",
        "naming",
        "slogan",
        "title",
        "praise",
        "couplet"
      ],
      "type": "string",
      "description": "Generation type (default: copywriting)"
    },
    "input": {
      "type": "string",
      "description": "Input text or topic (max 500 chars)"
    },
    "style": {
      "type": "string",
      "description": "Additional style requirement (optional)"
    }
  }
}

base_convert

Convert numbers between decimal, binary, octal, hexadecimal.

Argument	Type	Description
from	string	Source base (default: dec)
value*	string	Number to convert

Input schema (JSON)

{
  "type": "object",
  "required": [
    "value"
  ],
  "properties": {
    "from": {
      "enum": [
        "dec",
        "bin",
        "oct",
        "hex"
      ],
      "type": "string",
      "description": "Source base (default: dec)"
    },
    "value": {
      "type": "string",
      "description": "Number to convert"
    }
  }
}

cron_parse

Parse cron expression to human-readable description with next 5 run times.

Argument	Type	Description
expression*	string	5-field cron: min hour day month weekday

Input schema (JSON)

{
  "type": "object",
  "required": [
    "expression"
  ],
  "properties": {
    "expression": {
      "type": "string",
      "description": "5-field cron: min hour day month weekday"
    }
  }
}

cron_task_create

Create a scheduled task with cron expression. For AI agents to manage daily check-ins, monitoring, reminders etc.

Argument	Type	Description
name*	string	Task name, e.g. "虾评打卡" or "每日盯盘"
tags	array	Tags like ["checkin", "monitor"] (optional)
agent_id	string	Your agent identifier (default: "default")
schedule*	string	Cron expression (5 fields): min hour day month weekday. E.g. "0 9 * * *" = daily at 9:00
template	string	Template ID from cron_task_templates (optional, auto-fills schedule)
timezone	string	Timezone, e.g. "Asia/Shanghai" (default: UTC)
description	string	Task description (optional)
max_retries	number	Max retry attempts on failure (default: 0, no retry)
callback_url	string	URL to call when task is due (optional)

Input schema (JSON)

cron_task_done

Mark a scheduled task as completed or failed. Supports failure tracking and auto-retry.

Argument	Type	Description
status	string	Execution result (default: "success"). Use "failed" to trigger retry if max_retries is set.
message	string	Optional message about the result (e.g. error details)
task_id*	string	Task ID to mark as done
agent_id	string	Your agent identifier (default: "default")

Input schema (JSON)

{
  "type": "object",
  "required": [
    "task_id"
  ],
  "properties": {
    "status": {
      "enum": [
        "success",
        "failed"
      ],
      "type": "string",
      "description": "Execution result (default: \"success\"). Use \"failed\" to trigger retry if max_retries is set."
    },
    "message": {
      "type": "string",
      "description": "Optional message about the result (e.g. error details)"
    },
    "task_id": {
      "type": "string",
      "description": "Task ID to mark as done"
    },
    "agent_id": {
      "type": "string",
      "description": "Your agent identifier (default: \"default\")"
    }
  }
}

cron_task_list

List scheduled tasks. Use due=true to see only tasks that need action now.

Argument	Type	Description
due	boolean	Only show tasks due now (default: false)
tag	string	Filter by tag (optional)
agent_id	string	Your agent identifier (default: "default")

Input schema (JSON)

{
  "type": "object",
  "properties": {
    "due": {
      "type": "boolean",
      "description": "Only show tasks due now (default: false)"
    },
    "tag": {
      "type": "string",
      "description": "Filter by tag (optional)"
    },
    "agent_id": {
      "type": "string",
      "description": "Your agent identifier (default: \"default\")"
    }
  }
}

cron_task_logs

Get execution history/logs for a scheduled task. Shows past completion times, success/failure status, and counts. Omit task_id to get all logs for the agent.

Argument	Type	Description
limit	number	Max log entries to return (default: 50)
task_id	string	Task ID to get logs for (omit for all agent logs)
agent_id	string	Your agent identifier (default: "default")

Input schema (JSON)

{
  "type": "object",
  "properties": {
    "limit": {
      "type": "number",
      "description": "Max log entries to return (default: 50)"
    },
    "task_id": {
      "type": "string",
      "description": "Task ID to get logs for (omit for all agent logs)"
    },
    "agent_id": {
      "type": "string",
      "description": "Your agent identifier (default: \"default\")"
    }
  }
}

cron_task_templates

Get preset task templates with common cron schedules (daily, weekday, hourly, stock market, etc.). Use these to quickly create tasks without writing cron expressions.

No arguments.

Input schema (JSON)

{
  "type": "object",
  "properties": {}
}

file_analyze

Analyze tabular data: detect column types, compute stats (min/max/mean/median for numbers, top values for text), find nulls. Returns summary and preview.

Argument	Type	Description
format	string	Input format (default: auto-detect)
content*	string	File content (raw text or base64)
options	object
encoding	string	Content encoding (default: utf-8)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "content"
  ],
  "properties": {
    "format": {
      "enum": [
        "csv",
        "tsv",
        "json",
        "auto"
      ],
      "type": "string",
      "description": "Input format (default: auto-detect)"
    },
    "content": {
      "type": "string",
      "description": "File content (raw text or base64)"
    },
    "options": {
      "type": "object",
      "properties": {
        "delimiter": {
          "type": "string",
          "description": "Custom delimiter"
        },
        "has_header": {
          "type": "boolean",
          "description": "First row is header (default: true)"
        }
      }
    },
    "encoding": {
      "enum": [
        "utf-8",
        "base64"
      ],
      "type": "string",
      "description": "Content encoding (default: utf-8)"
    }
  }
}

file_generate

Generate CSV/TSV/JSON file from structured data array. Returns base64-encoded file and raw text.

Argument	Type	Description
data*	array	Array of objects to generate file from
format*	string	Output format (default: csv)
options	object

Input schema (JSON)

{
  "type": "object",
  "required": [
    "data",
    "format"
  ],
  "properties": {
    "data": {
      "type": "array",
      "items": {
        "type": "object"
      },
      "description": "Array of objects to generate file from"
    },
    "format": {
      "enum": [
        "csv",
        "tsv",
        "json"
      ],
      "type": "string",
      "description": "Output format (default: csv)"
    },
    "options": {
      "type": "object",
      "properties": {
        "columns": {
          "type": "array",
          "items": {
            "type": "string"
          },
          "description": "Column order (default: auto from data)"
        },
        "delimiter": {
          "type": "string",
          "description": "Custom delimiter"
        },
        "include_header": {
          "type": "boolean",
          "description": "Include header row (default: true)"
        }
      }
    }
  }
}

file_parse

Parse CSV/TSV/JSON/XML file content to structured JSON. Auto-detects format and column types. Returns columns, data rows, and preview.

Argument	Type	Description
format	string	Input format (default: auto-detect)
content*	string	File content (raw text or base64 with encoding param)
options	object
encoding	string	Content encoding (default: utf-8)
filename	string	Filename for format detection (optional)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "content"
  ],
  "properties": {
    "format": {
      "enum": [
        "csv",
        "tsv",
        "json",
        "xml",
        "auto"
      ],
      "type": "string",
      "description": "Input format (default: auto-detect)"
    },
    "content": {
      "type": "string",
      "description": "File content (raw text or base64 with encoding param)"
    },
    "options": {
      "type": "object",
      "properties": {
        "max_rows": {
          "type": "number",
          "description": "Max rows to return (default: 10000)"
        },
        "delimiter": {
          "type": "string",
          "description": "Custom delimiter (e.g. \",\" or \"\\t\")"
        },
        "has_header": {
          "type": "boolean",
          "description": "First row is header (default: true)"
        }
      }
    },
    "encoding": {
      "enum": [
        "utf-8",
        "base64"
      ],
      "type": "string",
      "description": "Content encoding (default: utf-8)"
    },
    "filename": {
      "type": "string",
      "description": "Filename for format detection (optional)"
    }
  }
}

html_entity

Encode or decode HTML entities.

Argument	Type	Description
input*	string	String to process
action	string	Action (default: auto)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "input"
  ],
  "properties": {
    "input": {
      "type": "string",
      "description": "String to process"
    },
    "action": {
      "enum": [
        "auto",
        "encode",
        "decode"
      ],
      "type": "string",
      "description": "Action (default: auto)"
    }
  }
}

idea_list

List ideas from the JieBang ideas board. Filter by status, sort by votes. View community feature requests and their progress.

Argument	Type	Description
filter	string	Filter by status (optional)

Input schema (JSON)

{
  "type": "object",
  "properties": {
    "filter": {
      "enum": [
        "pending",
        "approved",
        "developing",
        "launched",
        "rejected"
      ],
      "type": "string",
      "description": "Filter by status (optional)"
    }
  }
}

idea_submit

Submit a new idea or feature request to the JieBang ideas board. Supports categorization, priority, and source tracking.

Argument	Type	Description
tags	array	Tags
title*	string	Idea title (max 200 chars)
source	string	Source (user/v2ex/zhihu/reddit/agent, default: agent)
category	string	Category (default: 工具需求)
priority	string	Priority (default: medium)
description	string	Detailed description (max 2000 chars)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "title"
  ],
  "properties": {
    "tags": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Tags"
    },
    "title": {
      "type": "string",
      "description": "Idea title (max 200 chars)"
    },
    "source": {
      "type": "string",
      "description": "Source (user/v2ex/zhihu/reddit/agent, default: agent)"
    },
    "category": {
      "enum": [
        "工具需求",
        "功能优化",
        "Bug修复",
        "新功能"
      ],
      "type": "string",
      "description": "Category (default: 工具需求)"
    },
    "priority": {
      "enum": [
        "high",
        "medium",
        "low"
      ],
      "type": "string",
      "description": "Priority (default: medium)"
    },
    "description": {
      "type": "string",
      "description": "Detailed description (max 2000 chars)"
    }
  }
}

image_convert

Convert image format to WebP/AVIF/PNG/JPEG with optional resize and quality control.

Argument	Type	Description
url*	string	Image URL to convert
width	number	Target width in pixels
format	string	Output format (default: webp)
height	number	Target height in pixels
quality	number	Quality 1-100 (default: 80)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "url"
  ],
  "properties": {
    "url": {
      "type": "string",
      "description": "Image URL to convert"
    },
    "width": {
      "type": "number",
      "description": "Target width in pixels"
    },
    "format": {
      "enum": [
        "webp",
        "avif",
        "png",
        "jpeg"
      ],
      "type": "string",
      "description": "Output format (default: webp)"
    },
    "height": {
      "type": "number",
      "description": "Target height in pixels"
    },
    "quality": {
      "type": "number",
      "description": "Quality 1-100 (default: 80)"
    }
  }
}

json_yaml_convert

Convert between JSON and YAML formats. Auto-detects direction.

Argument	Type	Description
input*	string	JSON or YAML string
direction	string	Conversion direction (default: auto)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "input"
  ],
  "properties": {
    "input": {
      "type": "string",
      "description": "JSON or YAML string"
    },
    "direction": {
      "enum": [
        "auto",
        "json2yaml",
        "yaml2json"
      ],
      "type": "string",
      "description": "Conversion direction (default: auto)"
    }
  }
}

keyword_extract

Extract keywords and key phrases from text with search intent classification. Returns 10-20 keywords sorted by importance with long-tail variations.

Argument	Type	Description
lang	string	Language (default: zh)
text*	string	Text to extract keywords from (max 3000 chars)
count	number	Number of keywords (1-20, default: 10)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "text"
  ],
  "properties": {
    "lang": {
      "enum": [
        "zh",
        "en"
      ],
      "type": "string",
      "description": "Language (default: zh)"
    },
    "text": {
      "type": "string",
      "description": "Text to extract keywords from (max 3000 chars)"
    },
    "count": {
      "type": "number",
      "description": "Number of keywords (1-20, default: 10)"
    }
  }
}

meta_desc_generate

Generate SEO-friendly meta description (120-160 chars) from title, keyword, and content. Includes call-to-action and keyword placement.

Argument	Type	Description
lang	string	Language (default: zh)
title*	string	Page title (required)
content	string	Content summary (optional)
keyword	string	Target keyword (optional)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "title"
  ],
  "properties": {
    "lang": {
      "enum": [
        "zh",
        "en"
      ],
      "type": "string",
      "description": "Language (default: zh)"
    },
    "title": {
      "type": "string",
      "description": "Page title (required)"
    },
    "content": {
      "type": "string",
      "description": "Content summary (optional)"
    },
    "keyword": {
      "type": "string",
      "description": "Target keyword (optional)"
    }
  }
}

meta_extract

Extract SEO meta tags from any URL. Returns title, description, OG tags, Twitter cards, structured data, and SEO health score.

Argument	Type	Description
url*	string	URL to analyze
format	string	Output detail level (default: full)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "url"
  ],
  "properties": {
    "url": {
      "type": "string",
      "description": "URL to analyze"
    },
    "format": {
      "enum": [
        "full",
        "summary"
      ],
      "type": "string",
      "description": "Output detail level (default: full)"
    }
  }
}

qrcode_generate

Generate QR code for text or URL. Returns SVG data URI.

Argument	Type	Description
size	number	Image size in pixels (default: 256, max: 1024)
bgColor	string	Background hex color (default: ffffff)
content*	string	Text or URL to encode
ecLevel	string	Error correction level (default: M)
fgColor	string	Foreground hex color (default: 000000)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "content"
  ],
  "properties": {
    "size": {
      "type": "number",
      "description": "Image size in pixels (default: 256, max: 1024)"
    },
    "bgColor": {
      "type": "string",
      "description": "Background hex color (default: ffffff)"
    },
    "content": {
      "type": "string",
      "description": "Text or URL to encode"
    },
    "ecLevel": {
      "enum": [
        "L",
        "M",
        "Q",
        "H"
      ],
      "type": "string",
      "description": "Error correction level (default: M)"
    },
    "fgColor": {
      "type": "string",
      "description": "Foreground hex color (default: 000000)"
    }
  }
}

seo_check

Quick SEO health check for any URL. Returns score and issues list.

Argument	Type	Description
url*	string	URL to check

Input schema (JSON)

{
  "type": "object",
  "required": [
    "url"
  ],
  "properties": {
    "url": {
      "type": "string",
      "description": "URL to check"
    }
  }
}

seo_title_generate

Generate multiple SEO-optimized article titles from a keyword. Diverse styles: question, number, list, comparison, how-to. Max 60 chars each.

Argument	Type	Description
lang	string	Language (default: zh)
count	number	Number of titles to generate (1-10, default: 5)
keyword*	string	Target keyword (max 200 chars)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "keyword"
  ],
  "properties": {
    "lang": {
      "enum": [
        "zh",
        "en"
      ],
      "type": "string",
      "description": "Language (default: zh)"
    },
    "count": {
      "type": "number",
      "description": "Number of titles to generate (1-10, default: 5)"
    },
    "keyword": {
      "type": "string",
      "description": "Target keyword (max 200 chars)"
    }
  }
}

sql_format

Beautify, minify, or uppercase SQL keywords.

Argument	Type	Description
input*	string	SQL string
action	string	Action (default: beautify)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "input"
  ],
  "properties": {
    "input": {
      "type": "string",
      "description": "SQL string"
    },
    "action": {
      "enum": [
        "beautify",
        "minify",
        "uppercase"
      ],
      "type": "string",
      "description": "Action (default: beautify)"
    }
  }
}

text_humanize

Rewrite AI-generated text to sound naturally human-written. Supports Chinese and English. Reduces AI detection rates. Styles: standard, casual, academic, creative.

Argument	Type	Description
lang	string	Language (default: en)
text*	string	Text to humanize (max 3000 chars)
style	string	Rewriting style (default: standard)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "text"
  ],
  "properties": {
    "lang": {
      "enum": [
        "en",
        "zh"
      ],
      "type": "string",
      "description": "Language (default: en)"
    },
    "text": {
      "type": "string",
      "description": "Text to humanize (max 3000 chars)"
    },
    "style": {
      "enum": [
        "standard",
        "casual",
        "academic",
        "creative"
      ],
      "type": "string",
      "description": "Rewriting style (default: standard)"
    }
  }
}

text_rewrite

Rewrite text with different styles while preserving meaning. Modes: standard (natural), creative (expressive), academic (formal), casual (informal).

Argument	Type	Description
lang	string	Language (default: zh)
mode	string	Rewriting mode (default: standard)
text*	string	Text to rewrite (max 3000 chars)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "text"
  ],
  "properties": {
    "lang": {
      "enum": [
        "zh",
        "en"
      ],
      "type": "string",
      "description": "Language (default: zh)"
    },
    "mode": {
      "enum": [
        "standard",
        "creative",
        "academic",
        "casual"
      ],
      "type": "string",
      "description": "Rewriting mode (default: standard)"
    },
    "text": {
      "type": "string",
      "description": "Text to rewrite (max 3000 chars)"
    }
  }
}

text_summarize

Summarize text into concise version. Lengths: short (1-2 sentences), medium (3-5 sentences), long (full paragraph). Preserves key data and facts.

Argument	Type	Description
lang	string	Language (default: zh)
text*	string	Text to summarize (max 5000 chars)
length	string	Summary length (default: medium)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "text"
  ],
  "properties": {
    "lang": {
      "enum": [
        "zh",
        "en"
      ],
      "type": "string",
      "description": "Language (default: zh)"
    },
    "text": {
      "type": "string",
      "description": "Text to summarize (max 5000 chars)"
    },
    "length": {
      "enum": [
        "short",
        "medium",
        "long"
      ],
      "type": "string",
      "description": "Summary length (default: medium)"
    }
  }
}

timezone_convert

Convert datetime between time zones.

Argument	Type	Description
toZone	string	Target timezone (optional)
datetime*	string	ISO datetime (e.g. 2026-06-04T12:00)
fromZone	string	Source timezone (default: Asia/Shanghai)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "datetime"
  ],
  "properties": {
    "toZone": {
      "type": "string",
      "description": "Target timezone (optional)"
    },
    "datetime": {
      "type": "string",
      "description": "ISO datetime (e.g. 2026-06-04T12:00)"
    },
    "fromZone": {
      "type": "string",
      "description": "Source timezone (default: Asia/Shanghai)"
    }
  }
}

url_shorten

Create a short link for any URL. Returns short URL and click tracking. Free: 100 links/day.

Argument	Type	Description
url*	string	Long URL to shorten
code	string	Custom short code (3-20 chars, optional)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "url"
  ],
  "properties": {
    "url": {
      "type": "string",
      "description": "Long URL to shorten"
    },
    "code": {
      "type": "string",
      "description": "Custom short code (3-20 chars, optional)"
    }
  }
}

xml_format

Beautify or minify XML code.

Argument	Type	Description
input*	string	XML string
action	string	Action (default: beautify)

Input schema (JSON)

{
  "type": "object",
  "required": [
    "input"
  ],
  "properties": {
    "input": {
      "type": "string",
      "description": "XML string"
    },
    "action": {
      "enum": [
        "beautify",
        "minify",
        "validate"
      ],
      "type": "string",
      "description": "Action (default: beautify)"
    }
  }
}

{
  "type": "object",
  "required": [
    "name",
    "schedule"
  ],
  "properties": {
    "name": {
      "type": "string",
      "description": "Task name, e.g. \"虾评打卡\" or \"每日盯盘\""
    },
    "tags": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Tags like [\"checkin\", \"monitor\"] (optional)"
    },
    "agent_id": {
      "type": "string",
      "description": "Your agent identifier (default: \"default\")"
    },
    "schedule": {
      "type": "string",
      "description": "Cron expression (5 fields): min hour day month weekday. E.g. \"0 9 * * *\" = daily at 9:00"
    },
    "template": {
      "type": "string",
      "description": "Template ID from cron_task_templates (optional, auto-fills schedule)"
    },
    "timezone": {
      "type": "string",
      "description": "Timezone, e.g. \"Asia/Shanghai\" (default: UTC)"
    },
    "description": {
      "type": "string",
      "description": "Task description (optional)"
    },
    "max_retries": {
      "type": "number",
      "description": "Max retry attempts on failure (default: 0, no retry)"
    },
    "callback_url": {
      "type": "string",
      "description": "URL to call when task is due (optional)"
    }
  }
}