uvicorn

Uvicorn is an ASGI web server for Python that runs ASGI applications and provides HTTP/1.1 and WebSocket support.

Evaluated Mar 29, 2026 (0d ago)
Homepage ↗ Repo ↗ Infrastructure asgi python web-server http websockets asyncio
⚙ Agent Friendliness
50
/ 100
Can an agent use this?
🔒 Security
35
/ 100
Is it safe for agents?
⚡ Reliability
44
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
0
Documentation
70
Error Messages
0
Auth Simplicity
100
Rate Limits
0

🔒 Security

TLS Enforcement
30
Auth Strength
20
Scope Granularity
0
Dep. Hygiene
65
Secret Handling
70

TLS/auth behavior is not described in the provided content; in common deployments TLS is terminated at a reverse proxy/load balancer. As a server framework, security largely depends on the ASGI app, deployment config, and any TLS/proxy settings; the provided dependency info suggests modern common libraries, but no vulnerability/cvE assessment is included in the provided material.

⚡ Reliability

Uptime/SLA
0
Version Stability
75
Breaking Changes
55
Error Recovery
45
AF Security Reliability

Best When

You have an ASGI application and want a performant Python server with optional performance extras (e.g., uvloop, httptools).

Avoid When

You need a fully managed server service, or you require HTTP/2 support from the server itself (not indicated in the provided material).

Use Cases

  • Running FastAPI/Starlette and other ASGI frameworks
  • Serving HTTP APIs and streaming responses (async-capable)
  • Providing WebSocket endpoints for real-time applications

Not For

  • Wsgi-only (non-ASGI) applications without an ASGI adapter
  • Out-of-the-box managed hosting or service-level authentication/authorization (it is a server, not an auth platform)

Interface

REST API
No
GraphQL
No
gRPC
No
MCP Server
No
SDK
No
Webhooks
No

Authentication

OAuth: No Scopes: No

The provided material does not describe built-in authentication; typical use is to enforce auth at the ASGI application/framework or via reverse proxy (outside the scope of Uvicorn itself).

Pricing

Free tier: No
Requires CC: No

Open-source Python package (no SaaS pricing described in the provided content).

Agent Metadata

Pagination
none
Idempotent
False
Retry Guidance
Not documented

Known Gotchas

  • Uvicorn is a server runner, not a typical request/response API library; many agent interactions will be through launching it and interacting with the app over HTTP/WebSocket rather than calling a documented programmatic client interface.
  • Correct behavior depends on the ASGI app and deployment configuration (e.g., proxy/TLS settings are usually handled outside Uvicorn).

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Scores are editorial opinions as of 2026-03-29.

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