Urdb MCP

Name: Urdb MCP
Author: GetMystAdmin

by GetMystAdminversion 1.0.2i★ –iRuns on your computer

Registry nameio.github.GetMystAdmin/urdb-mcp

Install

Overview

Description from the maker (original English)

Search URDB for product integrity scores, enshittification events, and change tracking.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Search & AI memory
You need to fill in: URDB_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: URDB_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "urdb": {
      "command": "npx",
      "args": [
        "-y",
        "urdb-mcp"
      ],
      "env": {
        "URDB_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add urdb --env URDB_API_KEY=your-value -- npx -y urdb-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "urdb": {
      "command": "npx",
      "args": [
        "-y",
        "urdb-mcp"
      ],
      "env": {
        "URDB_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "urdb": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "urdb-mcp"
      ],
      "env": {
        "URDB_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

URDB_API_KEY secret required env
URDB API key — get one free at https://urdb.io/settings/api-keys

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account GetMystAdmin, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Search & AI memoryi

More stars than 0% of the other 7259 servers in this category
Published to the registry more recently than 5% of the other 7259 servers in this category
Basic checks equal to or better than 100% of the other 7259 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Urdb MCP safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: URDB_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.2) reached the registry 8 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Context7

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Computer or cloud★ 64,224MITUpdated today

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Codebase Memory

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Runs on your computer★ 48,148MITUpdated 20 days ago

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Exa

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Connect AI agents to Exa for web search, content fetching, and multi-step research.

Runs in the cloud★ 5,213MITUpdated last month

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

urdb-mcp

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.

Setup

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.

Example prompts

"Size the current-limiting resistor for a blue LED on 5 V"
"Give me every valid CAN bit timing for 500 kbit/s on a 40 MHz clock"
"What trace width do I need for 3 A with a 20 °C rise on an external layer?"
"Decode this struct's padding for a 32-bit target"
"Is 1000 km realistic on LoRa SF12?"
"Which laptops have the highest integrity scores?"
"Has the KitchenAid Stand Mixer gotten worse over the years?"

Tools

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.

Calculators

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/ .

Product data

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

How it works

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.

REST API

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

Configuration

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`.

Development

npm run typecheck

npm run build # bundle to dist/index.js npm test # stdio end-to-end against a mock API

License

MIT

Urdb MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Search & AI memoryi

Common questions

Alternatives

Context7

Codebase Memory

Exa

README from the maker

urdb-mcp

Setup

Example prompts

Tools

Calculators

Product data

How it works

REST API

Configuration

Development

License