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Show HN: NodePad – AI agent on a canvas instead of a linear chat

NodePad is an AI agent interface that replaces a traditional linear chat with an interactive canvas, allowing users to arrange and manage AI interactions in a more flexible, visual workspace.

Background

- NodePad is a web-based tool that replaces the familiar linear chat interface (like ChatGPT) with a freeform "canvas" where an AI agent can place text, images, and UI elements anywhere on an infinite 2D surface. - The key idea: instead of scrolling through a single thread of back-and-forth messages, users can arrange information spatially, resembling tools like Notion, Miro, or Apple's Freeform — but with an AI agent that actively generates and organizes content on the canvas. - It was posted as a "Show HN" on Hacker News, meaning it was built by an independent developer or small team presenting their project to the tech community for feedback. - This reflects a broader trend in 2024-2025 where AI tools experiment beyond simple chat interfaces — competitors include Anthropic's "Artifacts" (side-by-side code/preview) and Tldraw's "Make it Real" (drawing-to-code). The spatial canvas approach aims to solve chat's limitations: lost context in long conversations, inability to visually organize outputs, and poor support for multi-step creative workflows.

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