Software
Add authentication to FastAPI
FastAPI authentication is how a Python API identifies a caller and refuses everyone else. The important choices are password storage, token lifetime, and which routes are protected.
For developers adding login to a FastAPI service and wanting the official security tutorial plus an external checklist.
Start here
Complete the security first steps, then read the OAuth2 JWT tutorial and write down where you will store the token.
Recommended resources
Start here · BeginnerSecurity first steps
The smallest protected route in the official tutorial.
fastapi.tiangolo.comOverview · BeginnerSecurity introduction
The map of the security chapter before the JWT details.
fastapi.tiangolo.comBuild · IntermediateOAuth2 with Password and JWT
The official token flow, including hashing passwords rather than storing them.
fastapi.tiangolo.comChecklist · IntermediateOWASP Authentication Cheat Sheet
Independent guidance on passwords, sessions, and errors the framework tutorial does not fully cover.
cheatsheetseries.owasp.org