⚠️ Affiliate Disclosure: This post is not an affiliate associated review. It may become one in the future and this disclosure will reflect that. This does not affect my reviews and I only recommend tools I genuinely believe in.
ExcaliClaw is a browser-based workspace for hand-drawn-style diagrams that your AI coding agent can draw on with you over MCP, made by developer Mounir Bella and launched on Product Hunt on 12 October 2026. I haven’t tested ExcaliClaw — this is an information guide for developers weighing it up, not a review. Every claim below comes from excaliclaw.com and the Product Hunt listing, fetched on 13 October 2026.
What Is ExcaliClaw and What Does It Do?
At its core, ExcaliClaw is a collaborative diagram workspace: persistent auto-saved storage, folders (“collections”) with instant search, sharing by public link or username, real-time collaboration with live cursors, version history, JSON export and import from tools such as Miro. The hook for developers is the tagline — “Hand-drawn diagrams your AI agent can draw with you”. It ships MCP tools so an agent in Claude, Cursor or VS Code can create and edit diagrams in your workspace alongside you.
One thing the site never says: whether ExcaliClaw is built on Excalidraw’s open-source canvas. The name and the hand-drawn aesthetic clearly nod to it, and the site describes itself as an “independent” workspace, but the relationship is unstated — so I won’t assume one.
How Does ExcaliClaw Work?
You draw in the browser; your agent connects through ExcaliClaw’s MCP server — the Product Hunt listing describes the connection as OAuth-based — and gets tools to draw on the same canvases. The vendor names Claude, Cursor and VS Code “and more” as supported clients, and the service is also listed on the Smithery MCP directory. Because both you and the agent work against the same stored workspace, the documented collaboration features (live cursors, version history, shared links) apply to agent edits as much as human ones. That’s the documented design; how well an agent actually lays out a sensible diagram is exactly the kind of thing only hands-on testing can answer.
How Much Does ExcaliClaw Cost?
Pricing is in euros only — no sterling or dollar pricing is shown, so UK buyers wear the conversion. The pricing page’s one blanket statement: “MCP and AI are unlimited on every ExcaliClaw plan.”
| Free — €0 | For trying it out and solo work; unlimited MCP/AI use |
| Starter — €9/month or €90/year | Teams of up to 5 members |
| Pro — €29/month or €290/year | Teams of up to 20 members; additional members €3/month each |
| Enterprise — custom | SSO and a contract; no figures published |
A discrepancy worth flagging: the Product Hunt listing mentions a 200-drawing cap on Free and a 30-day version history on Starter, but the vendor’s pricing page lists neither — it publishes no drawing or history limits at all. When the vendor’s own page and its launch listing disagree, check before you rely on either number.
What Are Developers Saying About ExcaliClaw?
Too new for meaningful feedback. My search on 13 October 2026 found no reviews or community discussion of ExcaliClaw itself — results were dominated by generic open-source “Excalidraw MCP” servers, which are a different (and free) way to get agent-drawn diagrams. The Product Hunt listing had a handful of followers at launch.
Who Is ExcaliClaw For?
On paper, ExcaliClaw suits a developer or small team that wants architecture sketches, flow diagrams or whiteboard thinking to live somewhere persistent, searchable and shared — with an agent able to draft and update them during a coding session. The unlimited-MCP free tier makes it an easy solo experiment. If you just want an agent to spit out a one-off diagram, the free routes — Excalidraw itself, the various open-source Excalidraw MCP servers, or Mermaid in Markdown — are the obvious alternatives, named here without comparison since I’ve tested none of them against ExcaliClaw.
ExcaliClaw: Pros & Cons On Paper
Pros
- ExcaliClaw documents unlimited MCP and AI use on every plan, including Free
- Real-time collaboration with live cursors, version history and link sharing (documented, not tested)
- JSON export and Miro import mean your diagrams aren’t locked in, per the site
- Works with Claude, Cursor and VS Code through one MCP server
- ExcaliClaw’s team pricing is simple: €9 or €29 a month with clear member caps
Cons
- ExcaliClaw’s free-tier limits are unclear — the launch listing and the pricing page contradict each other
- Euro-only pricing, with no UK or US pricing published
- The relationship to Excalidraw is unstated, which matters for longevity and compatibility questions
- Free open-source Excalidraw MCP servers already exist as alternatives
- Solo-maker product launched days ago, with no community feedback yet
Is ExcaliClaw Worth a Look?
This isn’t a scored verdict — I haven’t drawn a single box in ExcaliClaw. On paper, the idea is genuinely appealing: diagrams that persist, that a team can search and share, and that an agent can keep updated as the code changes. The free tier with unlimited MCP use makes finding out cheap. What I’d want answered before paying: the real free-tier limits (the vendor should publish them), whether agent-drawn layouts are actually usable, and what you get here that a free Excalidraw MCP server doesn’t give you. Those are testing questions, and this post will be updated if I get to them.
Used ExcaliClaw? Tell Me How You Find It
I don’t test developer tools — you’re the expert here. If you’re using ExcaliClaw, leave a comment: what works, what doesn’t, and what you’d choose instead. Honest developer experience is worth more than anything I can write from the vendor’s pages, and it helps the next dev weighing it up.
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