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Yoshi

plugin

Real-time security filter for MCP tool communications. Works as a Claude Code hook to inspect all data sent to and received from MCP servers. Detects prompt injection, API key leakage, tool poisoning, ASCII smuggling, SSRF, Base64-encoded payloads, and Rug Pull attacks. Provides PASS/WARN/BLOCK decisions with per-server configuration, allowlisting, and logging. Zero dependencies, ~60ms latency.

Works with: Claude Code (native)
native: this artifact type is that client's own format

Category: Security — see all ranked ›

Install (Claude Code):

/plugin marketplace add anthropics/claude-plugins-community
/plugin install mcp-yoshi@claude-community

Security audit

Not scanned yet. We audit npm-published capabilities for known advisories, install-time scripts and permission surface; this one has no npm package we can resolve, or has not reached the queue.

You searched for one. Check the rest of your stack:

npx tashan-cli doctor

Reads the config already on your machine and names what is dead, deprecated or running code at install time. No account, nothing uploaded.

tashan Pro$6/mo

Yoshi scores 31 today. Pro keeps the series, so you can see whether that is a project getting better or one on its way down.

Start a 7-day trial › Everything measured on this page stays free.

Show your score

Measured this well? Put the live badge in your README — it updates as the score does.

tashan badge for Yoshi
[![tashan](https://tashan.sh/badge/plugin-aliksir-mcp-yoshi-mcp-yoshi.svg)](https://tashan.sh/capability/plugin-aliksir-mcp-yoshi-mcp-yoshi.html)

source ↗  ·  plugin:aliksir/mcp-yoshi/mcp-yoshi

Everything on this page is public evidence and free. What it cannot know is whether you run this — check your whole config, free, in the browser. tashan Pro adds the series behind each row and names a replacement for anything dying.

Already running this? Check your whole config — free, in your browser, nothing installed. Or npx tashan-cli doctor locally, which sends nothing at all.

Measured 2026-09-13  ·  scorer s5  ·  how  ·  something wrong here?