Built for async from the start
Flasgo is ASGI-native, so concurrency and modern Python server workflows are part of the main path rather than a compatibility layer.
Flask ergonomics, ASGI-native execution
Flasgo
Async-first Python web framework with Flask ergonomics and Django-inspired security defaults.
Current release v0.5.2
Deployment baseline
Install with uv, run locally with reload, and deploy under uvicorn behind a
production edge or reverse proxy.
Runtime ASGI-native
Async request handling without retrofitting sync-first assumptions.
API shape Flask-like routing
Direct handlers, familiar helpers, and readable application code.
Security Defaults that hold up
Signed sessions, CSRF, host validation, and safer headers built in.
Why Flasgo
Section titled “Why Flasgo”Flasgo is built for developers who want the core web-app path to stay compact and readable while still taking async execution, deployment posture, and security defaults seriously.
Familiar request and routing ergonomics
Handlers, routes, request helpers, responses, templates, and forms stay close to the Flask mental model without freezing the runtime story in the past.
Defaults that assume deployment matters
Signed sessions, CSRF protection, host validation, SSRF guards, request limits, cache controls, and hardened headers are part of the documented baseline.
Small surface area, clear deployment story, no pretend batteries-everywhere pitch.
Flasgo covers the common Python web application path without ballooning into a giant abstraction layer. The docs focus on what the framework does, how to run it, and what assumptions matter when you move toward production.
Install with uv add flasgo
Run locally with reload and keep the development loop close to a normal ASGI workflow.
>= 3.14
The framework targets current Python and leans into modern tooling instead of carrying old runtime compromises.
What ships with Flasgo
Section titled “What ships with Flasgo”Routing and request handling
Define handlers directly, work with requests and responses clearly, and keep application flow easy to trace.
Templates, forms, and static files
Flasgo covers the common server-rendered application path instead of forcing an immediate jump to another stack.
Security-sensitive defaults
Session signing, CSRF, allowed hosts, and header defaults are treated as part of the core framework story.
Docs, testing, and deployment guidance
The docs cover optional OpenAPI endpoints, local iteration, production posture, and the deployment assumptions needed for a real service.
Start reading
Section titled “Start reading”OverviewWhat is Flasgo?
Start with the framework summary, core design goals, and the shape of the API.
SecuritySecurity architectureReview the protections Flasgo enables by default and the production assumptions behind them.
OperationsDevelopment and deploymentGo straight to local workflow, uvicorn deployment, and operational guidance.