SpendLil Documentation

SpendLil sits between your app and your AI provider, tracking every request, calculating costs, and alerting you when spend crosses your thresholds. Your API keys pass through — never stored. Your AI never goes down because of us.

Quick Start

Get tracking in under 2 minutes. Change one URL, add one header.

How It Works

Understand the proxy architecture, auto-discovery, and resilience model.

API Reference

Proxy endpoints, dashboard API, headers, and error codes.

Compliance

EU AI Act, UK AI Bill, and what they mean for your business.

Obligation Checker

Answer 10 questions to find out what AI compliance applies to you.

IDE Setup

VS Code, JetBrains, Cursor, Trae, Neovim — integrate SpendLil with your editor.

Frameworks

Next.js, Express, FastAPI, Django, Rails, LangChain, Vercel AI SDK.

Changelog

What's new in SpendLil.