PinAI — AI Knowledge Library

Great AI outputs disappear. You get a brilliant explanation, a useful code snippet, a well-structured plan — and then it's gone, buried in conversation history. You might scroll back for it later, or paste it into a doc, or just lose it entirely. PinAI fixes this. **Save individual responses, not entire conversations.** Click the pin button on any AI response to save it to a project board. PinAI automatically captures the output, the prompt that generated it, the conversation title, and the source URL. **Organize by project, not by platform.** Create boards for real work — "SaaS MVP", "Research Paper", "Learning Rust". Each board collects the best outputs across Claude, ChatGPT, and Gemini in one place. **Add context that matters.** Attach a personal note to any saved item: why you saved it, what you learned, how it connects to your work. Add a lightweight action item — a next step you don't want to forget. **Re-inject into new conversations.** This is the feature that changes your workflow. Open a saved output in the sidebar, click Re-inject, and it gets pasted directly into the chat input of whatever AI platform you're currently using. Your best outputs become reusable context. **Works where you work.** PinAI supports Claude (claude.ai), ChatGPT (chatgpt.com), and Gemini (gemini.google.com). One extension, three platforms. **Your data stays on your device.** PinAI is local-first. All data is stored in your browser using IndexedDB. Nothing is sent to any server, API, or third party. No accounts, no tracking, no analytics. Export your data to Markdown anytime. **Free and open source.** PinAI is MIT-licensed. No premium tiers, no feature gating, no subscriptions. Built for developers, researchers, writers, product managers, and anyone who talks to AI every day and wants to keep the best of what it gives back.