MCPShark
Traffic Inspector for Model Context Protocol
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https://github.com/mcp-shark/mcp-shark Site: https://mcpshark.sh/I built MCPShark, a traffic inspector for the Model Context Protocol (MCP).It sits between your editor/LLM client and MCP servers so you can: • See all MCP traffic (requests, responses, tools, resources) in one place • Debug sessions when tools don’t behave as expected • Optionally run “Smart Scan” checks to flag risky tools / configs
HN · launched Dec 10, 2025 · 37 upvotes (top 23%) · 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
More like this: all 465 launches in model context protocol tools →
Could you build this?
Yes MCPShark is a proxy and traffic inspector for the Model Context Protocol (MCP) stream over stdio/HTTP/SSE, which can be implemented with a lightweight Node.js/Go proxy and a web UI.
Discussion
4 comments analyzed.
Concerns raised: Scalability to thousands of developers and millions of traces, Tool limited to local development currently
Feature requests: Replay prompts functionality, Example reports for review
Competitors
Other products that read as similar to this one : 150 launches clear the similarity bar, closest 8 shown.
Attention rank: #42 of 151 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 36 days after the earliest competitor.
- MCPShark Viewer (VS Code/Cursor extension)- view MCP traffic in-editor · hn · 2025-12-17 · 28 upvotes · similarity 0.77
- MCP Flow Detection · hn · 2025-11-20 · 11 upvotes · similarity 0.57
- Model Tools Protocol (MTP) · hn · 2026-02-10 · 9 upvotes · similarity 0.50
- MCP Traffic Analysis Tool · hn · 2025-11-17 · 38 upvotes · similarity 0.49
- MCPlexor · hn · 2026-02-09 · 6 upvotes · similarity 0.45
- MCP Playground · hn · 2026-03-01 · 7 upvotes · similarity 0.45
- ContextVM · hn · 2026-02-25 · 6 upvotes · similarity 0.44
- MCP Local Traffic Analysis · hn · 2025-11-18 · 11 upvotes · similarity 0.43
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.