Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
US address verification, parsing, autocomplete, geocoding, and IP geolocation APIs.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
Pick the AI app you use, then copy the settings.
STHAN_API_KEYValues marked secret are keys to your account. Never share them or paste them into a chat.
You need
Which app do you use?
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": {
"sthan-io": {
"command": "npx",
"args": [
"-y",
"@sthan/mcp-server"
],
"env": {
"STHAN_API_KEY": "your-value"
}
}
}
}Run this in your terminal
claude mcp add sthan-io --env STHAN_API_KEY=your-value -- npx -y @sthan/mcp-serverFill in the empty values before running it.
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"sthan-io": {
"command": "npx",
"args": [
"-y",
"@sthan/mcp-server"
],
"env": {
"STHAN_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.
Paste into .vscode/mcp.json in your project
{
"servers": {
"sthan-io": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@sthan/mcp-server"
],
"env": {
"STHAN_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.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Runs on your computer; the tool list appears in your AI app after you install it.
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
The registry name was verified with the GitHub account sthan-io, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
This one runs on your computer; there is no internet endpoint
Runs on your computer and uses local settings instead
Runs on your computer; we can only read tool lists from internet endpoints
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
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.
You need to fill in: STHAN_API_KEY
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).
The GitHub repo last changed –, and the latest version (0.1.11) reached the registry 21 days ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.
In the same category: Spec Driven Development, Remote Desktop Commander, Systemdox
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
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.
Your architecture in your agents' context: checks, specs, ADRs and docs over MCP, at write time.
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.
MCP server for [sthan.io](https://sthan.io) — give your AI assistant the ability to verify, parse, autocomplete, and geocode US addresses, and look up IP geolocation. Works with Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and any MCP-compatible client.
8 tools · TypeScript · stdio transport · Free tier, no credit card required.
| Tool | What it does |
|---|---|
sthan_verify_address | Verify a US address is real and deliverable. Returns standardized format, ZIP+4, DPV, residential/commercial. |
sthan_parse_address | Parse freeform US address text into structured components (street number, name, type, direction, unit, city, state, zip). |
sthan_autocomplete_address | Suggest complete US addresses from partial input. Sub-100ms. |
sthan_autocomplete_city | Suggest US cities from partial input, with state code. |
sthan_autocomplete_zipcode | Suggest US ZIP codes from partial input. |
sthan_geocode | US address → latitude/longitude with accuracy + confidence, county, ZIP+4 and time zone. |
sthan_reverse_geocode | Latitude/longitude → nearest US street address with distance in meters, county, ZIP+4 and time zone; limit (up to 10) also lists nearby addresses. |
sthan_ip_geolocation | IPv4 or IPv6 → location (country to postal code, local time, flag, currency), the network behind it (ASN, ISP, proxy/hosting flags) and a confidence score. |
Sign up at sthan.io and create a key from the dashboard. No credit card.
sthan.mcpb and double-click it. Claude asks for your API key and keeps it in your system keychain. Nothing else to install.your_key_here with your key in Cursor Settings > MCP.claude mcp add sthan -e STHAN_API_KEY=your_key_here -- npx -y @sthan/mcp-server (details below).Replace your_key_here with your key. Every setup below downloads the latest @sthan/mcp-server from npm and calls the live API at https://api.sthan.io.
Claude Code (terminal):
claude mcp add sthan -e STHAN_API_KEY=your_key_here -- npx -y @sthan/mcp-server
On native Windows, wrap npx with cmd /c:
claude mcp add sthan -e STHAN_API_KEY=your_key_here -- cmd /c npx -y @sthan/mcp-server
Add --scope user to use it in every project. Start claude and type /mcp to confirm sthan is connected.
Claude Desktop: edit claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop:
{
"mcpServers": { "sthan": { "command": "npx", "args": ["-y", "@sthan/mcp-server"], "env": { "STHAN_API_KEY": "your_key_here" } } } }
Cursor: the same JSON in ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (one project).
Windsurf: the same JSON in ~/.codeium/windsurf/mcp_config.json.
VS Code: create .vscode/mcp.json. VS Code asks for the key once and stores it securely:
{
"inputs": [ { "type": "promptString", "id": "sthan-api-key", "description": "sthan.io API key", "password": true } ], "servers": { "sthan": { "type": "stdio", "command": "npx", "args": ["-y", "@sthan/mcp-server"], "env": { "STHAN_API_KEY": "${input:sthan-api-key}" } } } }
Try it without an AI client (opens the official MCP Inspector in your browser):
npx @modelcontextprotocol/inspector -e STHAN_API_KEY=your_key_here npx -y @sthan/mcp-server
Click Connect, then Tools > List Tools, pick a tool, and run it.
Troubleshooting
-y in npx -y. Without it, npx waits for an "OK to install?" answer that an AI client cannot give, and the server never starts.claude mcp add ... cmd /c ... command from PowerShell or Command Prompt. Git Bash rewrites /c to C:/, which saves a broken command that times out (fix: prefix it with MSYS_NO_PATHCONV=1).spawn npx ENOENT, use "command": "cmd" with "args": ["/c", "npx", "-y", "@sthan/mcp-server"].MCP_TOOL_TIMEOUT=150000 before starting claude; MCP Inspector: raise Request Timeout in its Configuration panel).Once configured, just ask your AI assistant naturally:
| Variable | Required | Description |
|---|---|---|
STHAN_API_KEY | Yes | Your sthan.io API key (sthan_test_* for development, sthan_live_* for production) |
STHAN_API_URL | No | Override base URL (default: https://api.sthan.io) |
Most calls return in 1 to 3 seconds. Address verification and parsing can take longer (up to about 2 minutes) when an address cannot be matched from sthan.io's own data and needs a live postal lookup, so the server waits up to 150 seconds for those two tools. If your MCP client stops waiting sooner, raise its tool timeout (for example, in Claude Code set MCP_TOOL_TIMEOUT=150000).
This monorepo publishes two packages:
| Package | npm | Purpose |
|---|---|---|
@sthan/mcp-server | The MCP server itself — the binary that your client launches | |
@sthan/core | TypeScript SDK for direct programmatic use of sthan.io APIs |
git clone https://github.com/sthan-io/mcp-server.git
cd mcp-server npm install npm run build --workspaces
Then run the server with STHAN_API_KEY=sthan_test_... node packages/mcp-server/dist/index.js.
MIT — see LICENSE.