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Chalk: a Mac app for technical diagrams with a built-in MCP for Claude

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Hey HN. Here's a Mac app I'm working on for making diagrams. It comes with an MCP server so Claude can make and edit diagrams directly. Still in progress, but I'd love some feedback.

HN · launched Jul 21, 2026 · 9 upvotes (top 49%) · 0 views

Niche: diagramming and flowchart tools · 116 launches, 6 in the last 7 days ▼ -50% · Explore this niche →

Category and tags
  • Horizontal
  • Dev tools
  • Prosumer
  • AI feature
  • Commercial product

Visit website ↗ Source listing ↗

More like this: all 116 launches in diagramming and flowchart tools →

Could you build this?

Yes A native macOS canvas app paired with a local MCP server that accepts JSON commands to render diagrams is well within the scope of modern AI-assisted Swift development.

Discussion

1 comment analyzed.

Competitors mentioned: Claude Web UI

Concerns raised: Feature already exists in competitor

Competitors

Other products that read as similar to this one : 300 launches clear the similarity bar, closest 8 shown.

Attention rank: #168 of 301 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 265 days after the earliest competitor.

  • chalk · ph · 2026-11-06 · 85 upvotes · similarity 0.48
  • Graffle · ph · 2026-10-17 · 1 upvotes · similarity 0.47
  • JellyDraw · ph · 2026-11-03 · 1 upvotes · similarity 0.45
  • Cupertino · ph · 2026-11-12 · 1 upvotes · similarity 0.45
  • SKETCHTALK · ph · 2026-11-04 · 2 upvotes · similarity 0.45
  • Chorono · ph · 2026-11-07 · 4 upvotes · similarity 0.44
  • Garage · ph · 2026-09-30 · 2 upvotes · similarity 0.44
  • HUD-like live annotation and sketching app for macOS · hn · 2025-10-29 · 56 upvotes · similarity 0.44

Related data

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