# Mubeen’s Blog

> Engineering deep dives, tools, AI experiments, and personal reflections.

## Docs

- [Building a B2B MCP Server: Securely Exposing Your SaaS to AI Agents](https://blog.mubeen.in/docs/engineering/ai/mcp_server.md): How to build a multi-tenant MCP server that lets your customers connect Claude Desktop to their private enterprise data.
- [Anatomy of a clean backend](https://blog.mubeen.in/docs/engineering/architecture/anatomy-of-a-clean-backend.md)
- [Demystifying OAuth: From 2.0's Chaos to 2.1's Order](https://blog.mubeen.in/docs/engineering/auth/building-secure-oauth-flows.md): A technical, ground-up guide to understanding OAuth 2.0, why it was confusing, and how OAuth 2.1 fixes it by mandating best practices.