mcp-yoshi
Publisher not specified · Claude Code
What this plugin does
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.
Catalog observations
- Sources
- Community
- Works with
- Claude Code
- Reported installs
- Not provided
- First observed
- 2026-10-03 22:13 UTC
- Last observed
- 2026-10-11 00:00 UTC
Installation counts are reported by Claude Marketplace, not independently verified active users. Observation dates are not release dates. Pricing and account requirements must be checked with the publisher.
Install in Claude Code
Choose a source and review what the plugin adds before installing.
Community
/plugin marketplace add anthropics/claude-plugins-community
/plugin install mcp-yoshi@claude-communitySource evidence
Descriptions and compatibility labels come from the linked sources. Where both sources match, the GitHub description is used because web summaries may be shortened. We have not independently tested the declared capabilities.