Context7
Up-to-date docs for AI agents
作者提供的说明(英文原文)
Search URDB for product integrity scores, enshittification events, and change tracking.
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。
URDB_API_KEY标为机密的值是你账户的钥匙。千万不要分享给别人,也不要粘贴到聊天里。
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": {
"urdb": {
"command": "npx",
"args": [
"-y",
"urdb-mcp"
],
"env": {
"URDB_API_KEY": "your-value"
}
}
}
}在终端中运行这条命令
claude mcp add urdb --env URDB_API_KEY=your-value -- npx -y urdb-mcp运行前请先填写空着的值。
粘贴到项目中的 .cursor/mcp.json,或 ~/.cursor/mcp.json
{
"mcpServers": {
"urdb": {
"command": "npx",
"args": [
"-y",
"urdb-mcp"
],
"env": {
"URDB_API_KEY": "your-value"
}
}
}
}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": {
"urdb": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"urdb-mcp"
],
"env": {
"URDB_API_KEY": "your-value"
}
}
}
}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7日
注册名称已通过 GitHub 账户 GetMystAdmin 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。
你需要填写:URDB_API_KEY
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(1.0.2)于8个月前进入注册中心。
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:Context7, Codebase Memory, Exa
同一分类中其他作者的服务器,按星标数排序。
如何看卡片:★ 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
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Connect AI agents to Exa for web search, content fetching, and multi-step research.
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。
MCP server for URDB. Gives your AI assistant 76 electronics, hardware and firmware calculators — plus the product integrity database tracking downgrades, shrinkflation, warranty cuts and enshittification.
Ask *"what UBRR do I need for 9600 baud on a 16 MHz AVR?"* and get 103 with the error percentage and the worked derivation, instead of a plausible-sounding guess.
1. Get an API key at urdb.io/settings/api-keys (free tier available)
2. Add to your MCP host
Claude Desktop config lives at ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).
{
"mcpServers": { "urdb": { "command": "npx", "args": ["urdb-mcp"], "env": { "URDB_API_KEY": "urdb_live_your_key_here" } } } }
3. Restart your host
Calculators are metered separately from product data — 1,000 calculator calls a day on the free tier, so an agent working through a design won't exhaust your quota on arithmetic.
Call tools/list to see the current set — the calculator catalogue is fetched from the server at runtime, so it grows without a package update.
76 tools across seven categories, named calc_ :
| Category | Covers |
|---|---|
| Components (11) | Resistor and capacitor colour/SMD codes, E-series snapping, LED resistors, RC time constants, series/parallel networks |
| Circuits (16) | 555 timers, op-amps, filters, buck/boost converters, MOSFET gate drive, Ohm's law, zener and LM317 regulators, Schmitt triggers |
| Power & Wiring (13) | PCB trace width and impedance, wire gauge, voltage drop, fuse sizing, heat sinks, battery packs, solar sizing, via current |
| Firmware (22) | UART baud rates, CAN bit timing, PLL dividers, timer prescalers, CRC, IEEE 754, struct padding, bitfields, watchdogs, Intel HEX |
| RF & Signals (7) | Antenna lengths, LoRa airtime, path loss, VSWR, Nyquist, FFT bins, wavelength |
| Mechanical (4) | Stepper motors, E-steps, gear ratios, tap drill sizes |
| Reference (3) | Pinouts, logic levels, MCU comparison |
Each returns the answer, machine-readable values, the worked derivation and a link to the same tool on the web at https://urdb.io/tools/ .
| Tool | Description |
|---|---|
urdb_search | Search products by name or keyword, with integrity scores |
urdb_get_product | Full integrity breakdown across 7 dimensions |
urdb_get_changes | Documented enshittification events for a product |
urdb_list_products | List/filter products by category, brand, score |
This package is a thin stdio→HTTPS proxy for https://urdb.io/api/v1. It contains no calculation logic: the catalogue and every tool's JSON Schema are fetched from /api/v1/tools when the server starts.
That means a calculator added to URDB shows up here on your next restart, and a fix reaches you via a deploy rather than npm update. If the API is unreachable the server still starts and serves the product tools, and retries the catalogue on the next tools/list.
Calculators follow published standards where one exists — IPC-2221 and IPC-2141 for trace geometry, IEC 60063 for E-series, IEC 60127 for fuses, ISO 11898-1 for CAN, IEEE 754 for floats. Where a result is an extrapolation rather than a measurement, the tool says so.
Everything here is available over plain HTTP:
curl -H "Authorization: Bearer $URDB_API_KEY" https://urdb.io/api/v1/tools
curl -X POST https://urdb.io/api/v1/tools/uart-baud-rate \ -H "Authorization: Bearer $URDB_API_KEY" \ -H "Content-Type: application/json" \ -d '{"clockHz": 16000000, "baud": 9600, "family": "avr-normal"}'
Full docs: urdb.io/api
| Variable | Required | Description |
|---|---|---|
URDB_API_KEY | yes | Your key from urdb.io/settings/api-keys |
URDB_API_URL | no | API base URL. Defaults to https://urdb.io/api/v1. |
npm run typecheck
npm run build # bundle to dist/index.js npm test # stdio end-to-end against a mock API
MIT