Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
作者提供的说明(英文原文)
21 MCP tools for math, randomness, dates, encoding, hashing, and more — deterministic and accurate.
这三项永远不会合并成一个分数:意见、测量和人气是不同的东西。
我们还没有为它写通俗的介绍。下面是我们从注册中心读取到的事实。
选择你使用的 AI 应用,然后复制设置。
你需要
你用的是哪个应用?
在上方选择你的应用。我们会记住它,下次按钮会显示“安装到 …”。
打开 Claude Desktop → Settings → Developer → Edit Config,把下面的内容粘贴到 claude_desktop_config.json
{
"mcpServers": {
"calc": {
"command": "npx",
"args": [
"-y",
"@coo-quack/calc-mcp"
]
}
}
}在终端中运行这条命令
claude mcp add calc -- npx -y @coo-quack/calc-mcp粘贴到项目中的 .cursor/mcp.json,或 ~/.cursor/mcp.json
{
"mcpServers": {
"calc": {
"command": "npx",
"args": [
"-y",
"@coo-quack/calc-mcp"
]
}
}
}浏览器会先询问是否打开应用,然后应用会显示设置并请你确认。密钥的值会留空,由你自己填写。
粘贴到项目中的 .vscode/mcp.json
{
"servers": {
"calc": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@coo-quack/calc-mcp"
]
}
}
}浏览器会先询问是否打开应用,然后应用会显示设置并请你确认。密钥的值会留空,由你自己填写。
这个服务器在你的电脑上运行,而 ChatGPT 只能连接互联网上的服务器。请选择其他应用。
你的选择通过 Cookie 保存在这台设备上,无需账户。
这些设置是根据作者在注册中心的条目生成的。如果 README 的写法不同,请以 README 为准。
它在你的电脑上运行;安装后,工具列表会显示在你的 AI 应用中。
我们检查的是任何人都能看到的信息;我们没有阅读代码。不适用的检查项不计入总数。 · 检查于 2026年11月8日
注册名称已通过 GitHub 账户 coo-quack 验证,该账户拥有此仓库
我们还没有从 GitHub 读取这个仓库
我们还没有从 GitHub 读取这个仓库
它在你的电脑上运行,没有互联网端点
在你的电脑上运行,改用本地设置
它在你的电脑上运行;我们只能读取互联网端点的工具列表
与注册中心里这个分类中所有活跃的服务器比较。只有当发布者拥有该仓库时,星标数才计入。
它在 1 项适用的基础检查中通过了 1 项。我们没有阅读代码。在添加密钥或令牌之前,请先看看这个服务器要求哪些权限,并使用只具备所需权限的密钥。
注册中心没有列出必需的密钥,不过有些服务器会在首次使用时要求你登录。
它在你的电脑上运行。你的 AI 应用会在需要时启动它,数据不会经过作者的服务器(除非它自己调用在线服务)。
GitHub 仓库最后更新于–,最新版本(2.1.5)于15天前进入注册中心。
支持 MCP 的应用,例如 Claude Desktop、Claude Code、Cursor 和 VS Code。你的电脑上还需要有 Node.js。
同一分类中有:Spec Driven Development, Remote Desktop Commander, VMware Storage
同一分类中其他作者的服务器,按星标数排序。
如何看卡片:↓ 每周下载量i★ GitHub 星标i三大支柱:评价 · 检查 · 使用情况i更新 = 最新版本发布到注册中心的时间i
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
VMware vSphere storage with 16 MCP tools: datastores, iSCSI, vSAN, FC multipath.
按原文从作者的仓库复制。PopNx MCP 没有审查或背书其内容。HTML、图片和脚本已被移除。链接会离开本站。
📖 [Documentation](https://coo-quack.github.io/calc-mcp/) — Full tool reference, examples, and install guides.
21 tools for things AI is not good at — deterministic math, cryptographic randomness, accurate date arithmetic, encoding, hashing, and more.
LLMs hallucinate calculations, can't generate true random numbers, and struggle with timezones. This MCP server fixes that.
# Claude Code
claude mcp add -s user calc-mcp -- npx -y @coo-quack/calc-mcp@2.1.5
npx -y @coo-quack/calc-mcp@2.1.5
Works with Claude Desktop, VS Code Copilot, Cursor, Windsurf, and any MCP client — setup guides below.
| AI alone | With calc-mcp |
|---|---|
| "10 + 34 × 341 ÷ 23 = 507.8" ❌ | 514.087 ✅ (math) |
| "Here's a UUID: 550e8400-..." 🤷 fake | Cryptographically random UUID v4/v7 ✅ (random) |
| "100 days from now is..." 🤔 guess | 2026-05-22 ✅ (date) |
| "SHA-256 of password123 is..." 💀 hallucinated | {"hash": "ef92b778bafe..."} ✅ (hash) |
Ask in natural language — your AI assistant selects the appropriate tool.
| You ask | You get | Tool |
|---|---|---|
| What's 10 + 34 × 341 ÷ 23? | 514.087 | math |
| Convert 255 to binary | 11111111 | base |
| Is 4539578763621486 a valid card number? | true | luhn |
| You ask | You get | Tool |
|---|---|---|
| How many characters in "Hello, World! 🌍"? | 15 chars, 18 bytes | count |
| Base64 encode "Hello World" | SGVsbG8gV29ybGQ= | base64 |
| Base64 decode "eyJhbGciOiJIUzI1NiJ9" | {"alg":"HS256"} | base64 |
| URL-encode "hello world" | hello%20world | encode |
| URL-decode "hello%20world" | hello world | encode |
HTML-decode <script> | | encode |
| SHA-256 hash of "password123" | {"hash": "ef92b778bafe..."} | hash |
| HMAC-SHA256 of "message" with key "secret" | {"hash": "8b5f48702995..."} | hash |
| You ask | You get | Tool |
|---|---|---|
| What time is it in New York? | 2026-02-10T19:00:00-05:00 | datetime |
| What's 100 days after 2026-02-11? | 2026-05-22 | date |
| When does "30 9 \* \* 1-5" run? | Mon–Fri at 9:30 | cron_parse |
| You ask | You get | Tool |
|---|---|---|
| Generate a UUID v7 | 019c4b54-aad2-7e52-... | random |
| Generate a readable 20-char password | hT9jZDojX6sHRJt8vaKS | random |
| Shuffle ["Alice", "Bob", "Charlie"] | ["Charlie", "Alice", "Bob"] | random |
| You ask | You get | Tool |
|---|---|---|
| 100 miles in kilometers? | 160.93 km | convert |
| 72°F in Celsius? | 22.22°C | convert |
| Convert #FF5733 to RGB | rgb(255, 87, 51) | color |
| Convert rgba(255, 0, 0, 0.5) to 8-digit HEX | #ff000080 | color |
| You ask | You get | Tool |
|---|---|---|
| Extract numbers from "abc123def456" | 123, 456 | regex |
| Does 1.5.3 satisfy ^1.0.0? | true | semver |
| Does 1.8.0 satisfy ">=1.5.0 <2.0.0"? | true | semver |
| IP range of 192.168.1.0/24? | 192.168.1.1 – .254 (254 hosts) | ip |
| Edit distance: "kitten" → "sitting" | 3 | diff |
| Unicode info for "€" | U+20AC, Currency Symbols | char_info |
Is {"name":"test"} valid JSON? | valid, object | format_validate |
| You ask | You get | Tool |
|---|---|---|
| Decode this JWT: eyJhbGci... | { alg: "HS256", name: "John Doe" } | jwt_decode |
| Parse https://example.com/search?q=hello | host: example.com, q: "hello" | url_parse |
| Tool | Description |
|---|---|
math | Evaluate expressions, statistics |
count | Characters (grapheme-aware), words, lines, bytes |
datetime | Current time, timezone conversion, UNIX timestamps |
random | UUID v4/v7, ULID, passwords (readable, custom charset), random number, shuffle |
hash | MD5, SHA-1, SHA-256, SHA-512, CRC32, HMAC |
base64 | Encode / decode |
encode | URL, HTML entity, Unicode escape |
date | Diff, add/subtract, weekday, wareki |
regex | Test, match, matchAll, replace |
base | Number base conversion (2–36) |
diff | Line diff, Levenshtein distance |
format_validate | Validate JSON, CSV, XML, YAML |
cron_parse | Human-readable cron + next runs (weekday/month names supported) |
luhn | Validate / generate check digits |
ip | IPv4/IPv6 info, CIDR contains check, range calculation |
color | HEX ↔ RGB ↔ HSL (alpha channel supported) |
convert | 8 categories, 146 unit names: length, weight, temperature, area (tsubo, tatami), volume, speed, data, time |
char_info | Unicode code point, block, category |
jwt_decode | Decode header + payload (no verification) |
url_parse | Protocol, host, path, params, hash |
semver | Compare, validate, parse, range satisfaction |
claude mcp add -s user calc-mcp -- npx -y @coo-quack/calc-mcp@2.1.5
Also available as a plugin from the coo-quack marketplace:
/plugin marketplace add coo-quack/claude-code-marketplace
/plugin install calc-mcp@coo-quack
See the installation guide for details.
Add to your config file:
| App | Config path |
|---|---|
| Claude Desktop (macOS) | ~/Library/Application Support/Claude/claude_desktop_config.json |
| Claude Desktop (Windows) | %APPDATA%\Claude\claude_desktop_config.json |
| Cursor | ~/.cursor/mcp.json |
| Windsurf | ~/.codeium/windsurf/mcp_config.json |
{
"mcpServers": { "calc-mcp": { "command": "npx", "args": ["-y", "@coo-quack/calc-mcp@2.1.5"] } } }
Add to .vscode/mcp.json in your workspace:
{
"servers": { "calc-mcp": { "command": "npx", "args": ["-y", "@coo-quack/calc-mcp@2.1.5"] } } }
Calc MCP is available as a Docker image from GitHub Container Registry:
docker run --rm -i ghcr.io/coo-quack/calc-mcp:latest
Or use in MCP client config:
{
"mcpServers": { "calc-mcp": { "command": "docker", "args": ["run", "--rm", "-i", "ghcr.io/coo-quack/calc-mcp:latest"] } } }
Available tags:
ghcr.io/coo-quack/calc-mcp:latest — Latest releaseghcr.io/coo-quack/calc-mcp:X.Y.Z — Specific version (replace X.Y.Z with the desired version)Calc MCP works with any MCP-compatible client. Run the server via stdio:
npx -y @coo-quack/calc-mcp@2.1.5
Point your client's MCP config to the command above. The server communicates over stdio using the standard Model Context Protocol.
bun install
bun run dev # Start dev server bun test # Run tests bun run lint # Biome bun run format # Biome
calc-mcp processes all data locally and does not:
For detailed security information, see [SECURITY.md](SECURITY.md).
calc-mcp itself is local-only. However, when used via an LLM, your inputs are sent to the LLM provider (Anthropic, OpenAI, etc.).
Example:
# ❌ Unsafe: Any secret passed to MCP tool is s只显示了开头部分;其余内容请在仓库中阅读