What is Context7? Up-to-Date Documentation for AI Code Editors

The Hallucination Problem

You're coding with an AI assistant and ask it about a library's API. It confidently gives you code that... doesn't work. The method doesn't exist, the signature is wrong, or it's from a version three years old.

This happens because LLMs are trained on static snapshots of the internet. They don't know about the latest release of your framework.

Enter Context7

Context7 solves this by pulling up-to-date, version-specific documentation directly from the source and making it available to your AI tools.

Instead of the LLM guessing based on training data, Context7 feeds it the actual current documentation for the library version you're using.

How It Works

You specify a library — e.g., Next.js 15, React 19, Prisma 6
Context7 fetches the latest docs — directly from official sources
Your AI gets accurate context — paste into Cursor, Claude, or any LLM
Better answers, zero hallucinations — the AI knows your actual API

Who Built It?

Context7 is built and maintained by the Upstash team — the same folks behind serverless Redis, Kafka, and QStash. They understand developer tooling.

Why It Matters

The difference between an AI that thinks it knows your stack and one that actually knows it is the difference between:

Without Context7: "Try router.push() with these options..." (outdated API)
With Context7: Here's the exact Next.js 15 App Router navigation pattern with the current API

Supported Tools

Context7 works with: - Cursor — paste docs directly into your AI-powered editor - Claude — provide accurate context for code generation - Any LLM — ChatGPT, Gemini, or self-hosted models

Getting Started

Visit context7.com, search for your library, and copy the documentation into your AI workflow. It's that simple.

The days of AI-generated code that uses deprecated APIs are over.