Show HN: Tandem – Real-time collaborative editor with AI attribution tracking

2 points

6 months ago

I built Tandem to solve a problem I kept running into with Claude Code: *How do you collaborate on documents with AI while maintaining proper attribution?*

Current tools (Google Docs, Notion, etc.) were designed for human-to-human collaboration. When I copy-paste Claude's suggestions into a doc, all attribution is lost. My team can't tell which parts I wrote vs AI-generated. In open source, this creates trust issues.

*Tandem's approach:* - Every edit is tagged as Human or AI - Git-based version control (full history, not just "last modified") - Real-time collaboration using Yjs CRDT - MCP integration (AI can directly edit documents using tools)

*Tech stack:* React 19, TipTap, Yjs, Hono, Bun, MCP

*Live demo:* https://tandem.irisgo.xyz

Think "Google Docs meets Git" but designed for human-AI teams. I'm treating this as a bottom-up approach to building an AI-native workspace (inspired by Sam Altman's recent comments about needing an "AI-native Slack").

Currently in MVP stage. Looking for feedback from the HN community: - Does this solve a problem you have? - What features would make this indispensable? - Concerns about AI attribution?

Happy to answer technical questions about the implementation!

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