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MCPShark Viewer (VS Code/Cursor extension)- view MCP traffic in-editor

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A few days ago I posted MCPShark (a traffic inspector for the Model Context Protocol). I just shipped a VS Code / Cursor extension that lets you view MCP traffic directly in the editor, so you’re not jumping between terminals, logs, and "I think this is what got sent".VS Code Marketplace: https://marketplace.visualstudio.com/items?itemName=MCPShark...Main repo: https://github.com/mcp-shark/mcp-sharkFeature requests / issues: https://github.com/mcp-shark/mcp-shark/issuesSite: https://mcpshark.sh/If you’re building MCP agents/tools: what would make MCP debugging actually easy—timeline view, session grouping, diffing tool args, exporting traces, something else? I’d be thankful if you could open a feature request here: https://github.com/mcp-shark/mcp-shark/issues

HN · launched Dec 17, 2025 · 28 upvotes (top 28%) · 0 views

Niche: model context protocol tools · 465 launches, 13 in the last 7 days ▼ -24% · Explore this niche →

Category and tags
  • Horizontal
  • Observability & eval
  • Developer
  • AI-native
  • Hobby / open-source project

Source listing ↗

More like this: all 465 launches in model context protocol tools →

Could you build this?

Yes It is an editor extension that acts as a local proxy or event listener displaying Model Context Protocol JSON-RPC traffic in a webview panel.

Discussion

No comments on this launch.

Competitors

Other products that read as similar to this one : 189 launches clear the similarity bar, closest 8 shown.

Attention rank: #71 of 190 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 43 days after the earliest competitor.

  • MCPShark · hn · 2025-12-10 · 37 upvotes · similarity 0.77
  • MCP Flow Detection · hn · 2025-11-20 · 11 upvotes · similarity 0.59
  • MCP Traffic Analysis Tool · hn · 2025-11-17 · 38 upvotes · similarity 0.48
  • Reticle · hn · 2026-01-06 · 5 upvotes · similarity 0.47
  • Dap-mux · hn · 2026-06-06 · 7 upvotes · similarity 0.46
  • MCPBouncer · ph · 2026-09-14 · 1 upvotes · similarity 0.45
  • MCP Linker · ph · 2026-10-16 · 1 upvotes · similarity 0.44
  • Markdown Visual · ph · 2026-09-30 · 2 upvotes · similarity 0.44

Related data

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