tiangolo / fastapi
FastAPI framework, high performance, easy to learn, fast to code, ready for production
github.com/tiangolo/fastapiIndexed at 50113daUp to date with upstream
About this codebase
FastAPI is an end-to-end web API framework where you declare parameters and payloads once as function parameters, and it uses Pydantic and Starlette to run your app and serve interactive API docs for clients. Developers use FastAPI to build web APIs with Python types—optionally deploying with FastAPI Cloud—while relying on the framework’s “Interactive API docs” and “Alternative API docs” to validate and explore endpoints. Under the hood, requests flow through routing and response handling, and the framework produces HTTP responses, websocket interactions, and OpenAPI-driven documentation artifacts from your declared function signatures.
Written by gpt-5.4-nano from the index
2,886 files and 6,475 symbols in 5 modules, led by Python (1,138 files) and Shell (5).
Code health
This codebase scores 9.3 out of 10 for code health, which we rate excellent. It also scores maintainability 9.3 and static performance 9.9 out of 10. The three are scored separately and never blended into one number. Risk is concentrated, as it usually is: 14 of 2,886 files are git hotspots, and they average 4.0 — which is where the fixes pay off most.
Do next
Nothing stands out in the week to Sep 1, the last indexed commit.
Improve what Repowise can see
Add a test coverage report
Without one, Repowise cannot tell tested code from untested code, so every test-related action says “unknown”.
- line coverage
- Unknown, no report
Small effort
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Docsclaude mcp add --transport http repowise https://api.repowise.dev/mcp/tiangolo/fastapi \ --header "Authorization: Bearer rw_live_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
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Try asking
- get_overview()
- get_answer("how is fastapi put together?")
- get_why("why is fastapi structured this way?")
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Go deeper
- OverviewEverything the index found, what changed this week, commits and decisions.
- DocumentationModule-by-module documentation, 1,377 pages, 11 written by a model.
- ArchitectureDependency graph, layers and third-party dependencies.
- Code healthEvery file's score, the findings behind it, tests and refactoring plans.
- CommitsEach commit's effect on code health, with agent provenance.
- ContributorsWho owns what, and where one person holds most of the knowledge.
- DecisionsArchitectural decisions mined from commits and pull requests.
- Ask this codebaseSign inGrounded answers over the indexed code.
For maintainers
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Repowise badge
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[](https://repowise.dev/repo/tiangolo/fastapi)Code health badge
Average health across every file, straight from the latest index.
[](https://repowise.dev/repo/tiangolo/fastapi)How tiangolo/fastapi works
FastAPI framework, high performance, easy to learn, fast to code, ready for production This page is a map of the tiangolo/fastapi repository, written primarily in Python, rebuilt from the source each time it is indexed. Repowise parses every symbol, computes a dependency graph, scores per-file code health from complexity, duplication, test coverage and churn, mines git history for hotspots and ownership, and lifts the architectural decisions into documentation you can read here or query through MCP.
The codebase has 2,886 files and 6,475 symbols in 5 modules, led by Python, Shell and JavaScript. Code health is 9.3 out of 10, rated excellent.
Use the links above to open each view, or connect this repository to your agent for grounded answers inside Claude, Cursor, Codex or VS Code.