# How to use Claude to see a company's tech stack with looot

Find what a website runs on, grouped by type, with live and no-longer-detected counts.

## Connect looot to Claude

1. In Claude, open Customize, then Connectors.
2. Click "+ Add", then "Add custom connector".
3. Name it looot and paste the remote MCP server URL https://api.looot.ai/mcp. Click Continue.
4. Review the authentication settings Claude detects and click Continue. Under Authentication pick "Sign in now" or "Sign in when needed". Under OAuth client, Anthropic recommends "Use Claude's published identity". Click Add.
5. looot's sign-in page opens: sign in with your looot account and allow access. Runs are paid from your prepaid looot balance.

Anthropic's help center says custom connectors work on Free, Pro, Max, Ultra, Team and Enterprise, and a Free account can add one custom connector. On Team and Enterprise an Owner or Primary Owner adds it under Organization settings, Connectors, and each member then clicks Connect under Customize, Connectors.

In Claude Code instead: Add looot from your terminal with one command: `claude mcp add --transport http looot https://api.looot.ai/mcp`. Then type /mcp inside Claude Code and follow the browser sign-in.

- Source, read 2026-11-10: [Anthropic help center: Get started with custom connectors using remote MCP](https://support.claude.com/en/articles/11175166-getting-started-with-custom-connectors-using-remote-mcp)
- Source, read 2026-11-10: [Claude Code docs: Connect Claude Code to tools via MCP](https://code.claude.com/docs/en/mcp)

## Ask Claude

In a new chat, click the "+" button at the lower left, choose Connectors and switch looot on for this conversation. Then paste the prompt.

Use looot to get the technologies used by [domain] with the job company.technographics, fallback on. Group them by type (hosting, framework, analytics, payments) and tell me which groups changed the most over time.

## Jobs it calls and what they cost

One use costs from free at today's cheapest providers. A provider that misses can fall back to the next one, which can cost more; looot charges only the calls that ran, from your prepaid balance.

- `company.technographics`: 1 call, from free (BuiltWith, the cheapest of 5 providers). Compare providers: [company.technographics benchmark](/benchmarks/company-technographics). [About the cheapest provider](/providers/builtwith)

## A real run

We ran this task through the looot MCP on 2026-11-10. Asked: vercel.com. Total charged: $0.

- company.technographics on builtwith-free1-api-json (BuiltWith): answered, charged $0. Run id run_e7131f56ecce4f4fa068a9367e75a907.
- 29 technology groups found for vercel.com.
- Live today: framework 20, hosting 9, javascript 8, ssl 4, mobile 4, analytics 3, feeds 2, CDN 1.
- Analytics shows 31 tools no longer detected against 3 live, the biggest change of any group.

## Good to know

- The free BuiltWith endpoint that answered returns counts per group and category, not tool names. For named tools, ask for a paid endpoint of the same job.

## More

- [The same task in ChatGPT](/guides/chatgpt/company-tech-stack)
- [The prompt on its own](/prompts/company-tech-stack)
- [All Claude guides](/guides/claude)