ExcaliClaw is a collaborative workspace for hand-drawn diagrams. Organize them in collections, search instantly, share by link or by name, and draw together in real time. Its MCP server lets Claude, Cursor or VS Code create and edit diagrams for you. Generous free plan: 200 drawings and unlimited AI (MCP) use, no credit card. Paid plans from €9/month. Version history, trash and backup export included. English, Español, Français.
Hi Product Hunt, I'm Mounir, the maker of ExcaliClaw.
I love hand-drawn diagrams, but they kept getting lost in random files, and my AI agent could only give me Mermaid text or ASCII boxes. So I built a workspace where diagrams live, stay organized, and your agent can draw in them.
What you get:
• Collections and instant search, so nothing gets lost
• Real-time collaboration, sharing by link or by name
• An MCP server: connect Claude, Cursor or VS Code (OAuth, nothing to paste) and let them create and edit diagrams
• Version history, trash and backup export, so mistakes are cheap
• English, Español and Français
Pricing, plainly (excl. VAT):
• Free: 200 drawings, unlimited AI (MCP) use, no credit card
• Starter: €9/month (unlimited drawings, 30-day history)
• Pro: €29/month (embed in your site, unlimited history; extra teammates €3/month)
It uses the Excalidraw editor for drawing and is an independent product.
I'd love to hear how you document architecture today, and what would make an AI-drawn diagram trustworthy enough for you to keep. Thanks for taking a look!
For me what would make an AI-drawn diagram trustworthy is being able to see the steps the agent took, not just the final canvas. When Claude edits through the MCP server, do I get a short description of what it changed that I can review before keeping it?
Letting the agent draw the diagram is the part I want. I describe architecture in text all day and nobody reads it. When Claude edits an existing diagram, does it move only what changed, or redraw the whole layout? If I've arranged the boxes by hand, I'd hate to lose that on every edit.
"mistakes are cheap" because of version history is the right design answer for solo use, but the case I'm curious about is real-time collaboration plus the MCP server at the same time, me dragging a box around by hand while Claude is mid-edit on the same diagram through MCP. does the agent see my cursor position and avoid the area I'm touching, or is it genuinely last-write-wins and I just have to not edit while an agent session is active? asking because the moment two editors (human and agent) are live on the same canvas, "version history" only helps after the collision, not during it.
honestly what'd make me keep an AI diagram is if it stopped moving my stuff around. I fix the layout by hand, ask it to add one box, and suddenly everything's rearranged. does it leave the existing layout alone when it edits?
Being able to create and edit diagrams through Claude or Cursor sounds really handy especially when explaining complex ideas.
About ExcaliClaw on Product Hunt
“Hand-drawn diagrams your AI agent can draw with you”
ExcaliClaw launched on Product Hunt on October 12th, 2026 and earned 90 upvotes and 12 comments, placing #11 on the daily leaderboard. ExcaliClaw is a collaborative workspace for hand-drawn diagrams. Organize them in collections, search instantly, share by link or by name, and draw together in real time. Its MCP server lets Claude, Cursor or VS Code create and edit diagrams for you. Generous free plan: 200 drawings and unlimited AI (MCP) use, no credit card. Paid plans from €9/month. Version history, trash and backup export included. English, Español, Français.
ExcaliClaw was featured in Productivity (662.9k followers), Developer Tools (521k followers) and Artificial Intelligence (480.9k followers) on Product Hunt. Together, these topics include over 383.7k products, making this a competitive space to launch in.
Who hunted ExcaliClaw?
ExcaliClaw was hunted by Mounir Bella. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Mounir Bella