onlyvibes

A FastAPI extension that replaces endpoints with vibes. Every request is handled by an LLM.

No @app.get. No @app.post. Just vibes.

Installation

uv sync

Usage

from onlyvibes import VibeApi

app = VibeApi()

That's it. Run it:

uv run uvicorn example:app --reload

Every request — any method, any path, any body — gets forwarded to Claude, which decides what the appropriate response should be.

Configuration

VibeApi accepts any standard FastAPI keyword argument, plus:

Parameter	Default	Description
model	claude-sonnet-4-20250514	Anthropic model to use
max_tokens	1024	Max tokens for the LLM response

Requirements

Set the ANTHROPIC_API_KEY environment variable before running.

Tests

uv run pytest