No red flags found in any of the 11 categories — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →
by kerlenton · MCP Server · ★ 347
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
🔒 Is mcpsnoop safe to install? View the security audit →
Wireshark for MCP. A transparent proxy that shows every real tool call between your AI client and your MCP servers, live in your terminal. The problem The official MCP Inspector connects as its own client. It never sees the traffic between your client (Claude Desktop, Cursor, Claude Code) and your server. A breakpoint in your own server only fires once a request arrives. It can't show you the call the real client never made, or made with arguments you didn't expect. So when a tool silently isn't called, capabilities don't line up, or a call just hangs, you're back to -ing a log in and guessing. mcpsnoop sits in the real data path instead. Wrap your server command with it and watch every JSON-RPC frame in a live terminal UI as your real client and server talk. Quick start Wrap your server in your client's MCP config: Everyth
| Stars | 347 |
| Forks | 36 |
| Language | Go |
| Category | MCP Server |
| License | MIT |
| Quality Score | 72.7990107989769/100 |
| Open Issues | 8 |
| Last Updated | 2026-09-11 |
| Created | 2026-06-27 |
| Platforms | claude-code, cli, codex, go, mcp |
| Est. Tokens | ~16k |
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mcpsnoop is Wireshark for MCP. A transparent proxy that shows every real tool call between your AI client and your MCP servers, live in your terminal.. It is categorized as a MCP Server with 347 GitHub stars.
mcpsnoop is primarily written in Go. It covers topics such as bubbletea, claude, cli.
You can find installation instructions and usage details in the mcpsnoop GitHub repository at github.com/kerlenton/mcpsnoop. The project has 347 stars and 36 forks, indicating an active community.
mcpsnoop is released under the MIT license, making it free to use and modify according to the license terms.
The top alternatives to mcpsnoop on Agent Skills Hub include agent-deck, agnix, gob. Each offers a different approach to the same problem space — compare them side-by-side by stars, quality score, and community activity.
Grades come from a rule-based scan built on the SlowMist agent-security taxonomy, covering 11 red-flag categories including credential harvesting, data exfiltration, and curl | sh installers. It is a first-layer scan, not a manual audit — we say so rather than overstate it.
The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.
Sources & who's responsible: