# mcp-server

Look up a domain’s technologies and the company behind it. Use the server from Claude Code or another supported MCP client.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 1
- Author: stackscan
- License: MIT · policy=link-only · description only; the file stays with the author
- Source: https://github.com/stackscan/stackscan-mcp
- Updated: 2026-10-02
- HTML: https://affpapa.org/en/nevibecode/mcp/stackscan-mcp-server

## What it does

Ask which technologies a site uses, who runs it, or how widely a particular technology appears across websites. For a single domain, the server returns technologies with their categories. Batch lookups compare several domains, while company lookups can return details such as industry, city, country, and LinkedIn.

You’ll need a StackScan API token and workspace UUID. The server runs through `npx -y @stackscan/mcp-server`, with credentials passed when you add it to Claude Code. Paid lookups count toward a session cap of 25 by default. A batch that would exceed the remaining cap is rejected as a whole, so check your available credits before sending a large lookup.

## Requirements
- Needs: Node.js (commands run via npx)
- Environment variables: `STACKSCAN_API_TOKEN`, `STACKSCAN_TENANT_ID`, `STACKSCAN_SESSION_LOOKUP_CAP` — keys and tokens: ask the human for the values, never commit them or put them in shared files.

## Install

### Claude Code (native platform)

**Platform CLI**
```bash
claude mcp add --env STACKSCAN_API_TOKEN=<STACKSCAN_API_TOKEN> --env STACKSCAN_TENANT_ID=<STACKSCAN_TENANT_ID> --env STACKSCAN_SESSION_LOOKUP_CAP=<STACKSCAN_SESSION_LOOKUP_CAP> --transport stdio stackscan-mcp-server -- npx -y @stackscan/mcp-server
```
Replace <…> with your own values

### Codex

**Platform CLI**
```bash
codex mcp add stackscan-mcp-server --env STACKSCAN_API_TOKEN=<STACKSCAN_API_TOKEN> --env STACKSCAN_TENANT_ID=<STACKSCAN_TENANT_ID> --env STACKSCAN_SESSION_LOOKUP_CAP=<STACKSCAN_SESSION_LOOKUP_CAP> -- npx -y @stackscan/mcp-server
```
Replace <…> with your own values

### Cursor

**Config file**
File `.cursor/mcp.json`:
```json
{
    "mcpServers": {
        "stackscan-mcp-server": {
            "command": "npx",
            "args": [
                "-y",
                "@stackscan/mcp-server"
            ],
            "env": {
                "STACKSCAN_API_TOKEN": "<STACKSCAN_API_TOKEN>",
                "STACKSCAN_TENANT_ID": "<STACKSCAN_TENANT_ID>",
                "STACKSCAN_SESSION_LOOKUP_CAP": "<STACKSCAN_SESSION_LOOKUP_CAP>"
            }
        }
    }
}
```
Replace <…> with your own values

### GitHub Copilot

**Config file**
File `.vscode/mcp.json`:
```json
{
    "servers": {
        "stackscan-mcp-server": {
            "type": "stdio",
            "command": "npx",
            "args": [
                "-y",
                "@stackscan/mcp-server"
            ],
            "env": {
                "STACKSCAN_API_TOKEN": "<STACKSCAN_API_TOKEN>",
                "STACKSCAN_TENANT_ID": "<STACKSCAN_TENANT_ID>",
                "STACKSCAN_SESSION_LOOKUP_CAP": "<STACKSCAN_SESSION_LOOKUP_CAP>"
            }
        }
    }
}
```
Replace <…> with your own values

### Gemini CLI

**Platform CLI**
```bash
gemini mcp add -e STACKSCAN_API_TOKEN=<STACKSCAN_API_TOKEN> -e STACKSCAN_TENANT_ID=<STACKSCAN_TENANT_ID> -e STACKSCAN_SESSION_LOOKUP_CAP=<STACKSCAN_SESSION_LOOKUP_CAP> stackscan-mcp-server npx -y @stackscan/mcp-server
```
Replace <…> with your own values

## When to use it
- identify technologies used by a domain
- find the company behind a website
- compare technologies across several domains
- check how many sites use a technology

## Example prompts
- Check which technologies `example.com` uses.
- Find the company behind `vercel.com` and report its industry and country.
- How many sites use Klaviyo, and where are they located?

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---
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