# Announcing MCP Authentication: secure your MCP servers with PropelAuth ## Articles and insights about Python from the PropelAuth team. ### 6 Best Auth Platforms for Python Developers in 2026 (FastAPI, Flask, and Django) Choosing a Python authentication platform is one of those decisions that's easy to get wrong and painful to undo. Whether you're building a FastAPI backend, a Django web app, or a Flask API, the auth library you reach for will shape how quickly you can ship, how cleanly you can enforce permissions,... ### Isolated Organizations: An easier way to do user isolation When you're building a B2B product, one of the first architectural decisions you'll face is how to separate your customers from each other. This conce... ### PropelAuth Updates: Account linking, async Python and more We've had a couple of exciting releases over the past few weeks. We're excited to share, so let's dive in! Social Account Linking Within PropelAuth... ### Dash with PropelAuth: Add Authentication to Your Data Apps with Just a Few Lines of Code We're excited to announce our new integration with Dash, the powerful Python framework from Plotly that enables data scientists and analysts to build... ### Make your LLMs worse with this MCP Tool We are a remote company, and as a remote company, there just aren’t as many opportunities for hanging out, talking around the water cooler. Being a C... ### PropelAuth Python v4 Release Today, we are excited to release a new version of our base Python library, as well as releases of our framework-specific libraries for FastAPI, Flask,... ### Building internal AI tools with Streamlit Most companies have a ton of valuable data internally. This could be analytics data on your customers interactions with your product. This could be an... ### React/FastAPI Starter Guide This guide walks through the process of setting up authentication using PropelAuth on top of a product built in FastAPI & React. Setting up our Auth... ### Streamlit Authentication Streamlit is a powerful tool for creating “data apps.” The easiest way to understand it is with this picture (from Streamlit’s marketing site): You w... ### Building a Multi-Tenant App with FastAPI, SQLModel, and PropelAuth Building a multi-tenant (sometimes also known as B2B) product can be a trickier than building for consumers. Instead of handling users as individuals,...