Nebula Tool Base

Precision stopwatch with lap times and countdown timer with alarm sound.精密秒表，支持计圈计时和带闹铃的倒计时功能。。

Calculate network address, broadcast address, subnet mask, and host range from an IP/CIDR.根据IP/CIDR计算网络地址、广播地址、子网掩码及主机范围。。

Encode text to Morse code and decode Morse code back to text. Includes sound playback.将文本编码为摩斯电码，并将摩斯电码解码回文本。支持声音播放功能。。

Convert between Roman numerals and Arabic numbers with instant results.在罗马数字与阿拉伯数字之间即时转换，快速获得结果。。

Minify or beautify CSS code with real parsing. Copy and download support.通过真实解析压缩或美化CSS代码，支持复制与下载功能。。

Browse and search emojis by category, click to copy to clipboard instantly.按类别浏览和搜索表情符号，点击即可立即复制到剪贴板。。

Generate Lorem Ipsum placeholder text with configurable paragraphs, sentences, or words.生成可配置段落、句子或单词数量的Lorem Ipsum占位文本。。

Convert text between uppercase, lowercase, title case, sentence case, camelCase and more.转换文本的大小写格式，包括大写、小写、标题格式、句子格式、驼峰格式等。。

Convert JSON data to CSV format and vice versa with preview and download.将JSON数据与CSV格式相互转换，支持预览和下载功能。。

Generate strong random passwords with configurable length and character types (uppercase, lowercase, digits, symbols).生成可配置长度和字符类型（大小写字母、数字、符号）的高强度随机密码。。

Decode JWT tokens without sending data to any server. Inspect header, payload, and signature.解码JWT令牌，无需将数据发送至服务器。检查头部、载荷和签名。。

Parse and explain cron expressions in human-readable format. Validate cron syntax.解析并以人类可读格式解释cron表达式，同时验证cron语法是否正确。。

Write markdown with live preview, supports headings, lists, code blocks, tables, and images.编写Markdown并实时预览，支持标题、列表、代码块、表格和图片。。

Compare two texts side-by-side and highlight added, removed, and unchanged lines.并排比较两段文本，高亮显示新增、删除和未改动的行。。

Convert numbers between binary, octal, decimal, and hexadecimal bases with instant results.在二进制、八进制、十进制和十六进制之间即时转换数字。。

Encode and decode URL components — handle special characters, query strings, and UTF-8.编码和解码URL组件——处理特殊字符、查询字符串和UTF-8。。

Convert between Unix timestamps, ISO 8601, and human-readable dates in multiple timezones.在Unix时间戳、ISO 8601与多时区可读日期之间进行转换。。

Test regular expressions in real-time with match highlighting and capture group display.实时测试正则表达式，高亮匹配结果并显示捕获组。。

Convert colors between HEX, RGB, and HSL formats with a visual color picker preview.在HEX、RGB和HSL格式之间转换颜色，并提供可视化颜色选择器预览。。

Encode and decode HTML entities — escape special characters for safe HTML output.编码和解码HTML实体——转义特殊字符以确保安全的HTML输出。。

Generate QR codes from text or URLs with customizable size and download as PNG.根据文本或网址生成二维码，可自定义尺寸并下载为PNG格式。。

Compute MD5, SHA1, SHA256, SHA512 hashes of any text using real cryptographic algorithms via CDN.通过CDN使用真实加密算法计算任意文本的MD5、SHA1、SHA256、SHA512哈希值。。

Generate random UUID v4 identifiers in bulk with one click. Copy individual or all.一键批量生成随机UUID v4标识符，支持单独或全部复制。。

Format, validate, and beautify JSON data with syntax highlighting and error detection.格式化、验证并美化JSON数据，支持语法高亮和错误检测功能。。

Encode and decode text to/from Base64 format instantly in your browser.在浏览器中即时将文本编码或解码为Base64格式。。

ktx is an executable context layer for data and analytics agents 🐙 Allow Claude Code, Codex, and any AI agent to query data accurately through MCP with skills, memory and a semantic layerktx 是一个数据和智能代理的可执行上下文层 🐙 允许 Claude Code、Codex 等 AI 代理通过 MCP 准确查询数据，具备技能、记忆和语义层。

GuJumpgate is a tool that simplifies network connectivity by providing secure, high-speed jumpgate access for remote systems.GuJumpgate 是一款简化网络连接的工具，为远程系统提供安全、高速的跳板访问。。

A lightweight code editor designed for quick edits and simple projects, offering essential features without unnecessary complexity.轻量级代码编辑器，专为快速编辑和简单项目设计，提供必要功能，避免不必要的复杂性。。

Bot that bridges Feishu/Lark messenger with a local Claude Code or Codex CLI. Streaming cards, per-chat sessions, multiple workspaces连接飞书/Lark与本地Claude Code或Codex CLI的机器人。支持流式卡片、按会话管理、多工作区。。

Open-source backend-as-a-service. Postgres, auth, storage, functions, AI gateway, MCP.开源后端即服务平台，集成Postgres、认证、存储、函数、AI网关及MCP功能。。

Project the aircraft passing overhead onto your ceiling in real time, from an RTL-SDR — with a live sky layer (sun, moon, stars, ISS) and where each plane is headed.通过RTL-SDR实时将头顶飞机投影到天花板，含动态天空层（日月星辰、国际空间站）及飞行方向。。

Kimi Code CLI — The Starting Point for Next-Gen AgentsKimi Code CLI — 下一代智能体的起点。

AI agent workspace for DeepSeek models, with Code and Claw modes built into your application.专为DeepSeek模型设计的AI智能体工作区，内置代码与爪模式，无缝集成至您的应用中。。

A structured template for publishing articles on WeChat, streamlining formatting and layout for consistent, professional content delivery.微信公众号文章发布的结构化模板，简化排版与布局，实现内容的一致性与专业化呈现。。

QuizTube creates interactive video quizzes, turning passive viewing into active learning with instant feedback and progress tracking.QuizTube创建互动视频测验，将被动观看转为主动学习，提供即时反馈和进度追踪。。

Next-generation UI automation harness powered by Python & Playwright. Chat with AI Agents to seamlessly generate, architect, and execute enterprise-grade UI test code.基于Python和Playwright的下一代UI自动化工具。与AI代理对话，无缝生成、设计并执行企业级UI测试代码。。

Give Claude Code the persistent memory it was missing and turn it into your operational co-pilot.为Claude Code赋予持久记忆，将其转变为你的操作副驾驶。。

Single-binary HTML report viewer for LLM-generated artifacts用于查看LLM生成工件的单二进制HTML报告查看器。

An AI-powered DevOps pipeline simulator combining CI/CD, GitOps (ArgoCD), Kubernetes rollouts, and auto-fixing via AI-generated PRs.一个AI驱动的DevOps管道模拟器，结合CI/CD、GitOps（ArgoCD）、Kubernetes部署及通过AI生成PR自动修复问题。。

Programmatic video for coding agents — HTML to video on your laptop. Turn HTML, CSS & data into real MP4s with pluggable render engines, 21 templates, AI soundtrack. Apache-2.0, no per-render fees. An official project by the Open Design team.编程视频工具：将HTML/CSS/数据转为MP4，支持多种渲染引擎、21种模板及AI配乐。Apache-2.0许可，无渲染费用。Open Design官方项目。。

AI App Bridge is a runtime bridge for AI agents to close the loop on mobile app iteration: inspect the running app, operate UI and WebView surfaces, collect structured runtime state, verify results, and continue improving the app.AI应用桥接器是一种运行时桥接，让AI代理能检查运行中的应用、操作UI和WebView界面、收集结构化运行时状态、验证结果并持续改进应用。。

ccswitch deepseek 转发ccswitch deepseek 转发。

中华传统色演示、色卡浏览与颜色知识科普开源项目展示中华传统色彩、浏览色卡及科普颜色知识的开源项目。

video-spec-builder —— 把我想做个视频逼成一份精确到秒的分镜脚本 video-spec.md,交给 HyperFrames 渲染。一条命令装到 Claude Code / Cursor / Codex:npx skills add feicaiclub/video-spec-buildervideo-spec-builder —— 将视频创意转化为精确到秒的分镜脚本 video-spec.md，供 HyperFrames 渲染。一键安装至 Claude Code/Cursor/Codex：npx skills add feicaiclub/video-spec-builder。

One click on the toolbar grabs the current page's video into ~/Downloads — local yt-dlp daemon, 1800+ sites. 小耳抓视频：一键把当前页视频抓到本地。小耳抓视频：点击工具栏一键将当前页视频抓取到~/Downloads，支持1800+站点，本地yt-dlp守护进程。。

See what your coding agent (Claude Code, Codex, Kimi) sends to the model — local proxy + web dashboard查看你的编程助手（如Claude Code、Codex、Kimi）发送给模型的内容——本地代理配合网页仪表板。。

A fan-made browser-based Witch Hat Atelier spell simulator.一款粉丝自制的《魔女帽工坊》浏览器咒语模拟器。。