{"slug":"mcp-yoshi","title":"mcp-yoshi","description":"Real-time security filter for MCP tool communications. Works as a Claude Code hook to inspect all data sent to and\nreceived from MCP servers. Detects prompt injection, API key leakage, tool poisoning, ASCII smuggling, SSRF,\nBase64-encoded payloads, and Rug Pull attacks. Provides PASS/WARN/BLOCK decisions with per-server configuration,\nallowlisting, and logging. Zero dependencies, ~60ms latency.","developer":null,"category":null,"reported_installs":null,"active":true,"first_seen_at":"2026-10-03T22:13:33.942Z","last_seen_at":"2026-10-11T06:00:01.664Z","last_changed_at":"2026-10-03T22:13:33.942Z","platform":"claude","sources":["Community"],"works_with":["Claude Code"],"marketplace_url":null,"repository_url":"https://github.com/aliksir/mcp-yoshi.git","web_data":{},"github_data":{},"catalog_sources":{"community":[{"name":"mcp-yoshi","source":{"sha":"935b43658c1353390cb414b454972d32245a3e55","url":"https://github.com/aliksir/mcp-yoshi.git","source":"url"},"homepage":"https://github.com/aliksir/mcp-yoshi","description":"Real-time security filter for MCP tool communications. Works as a Claude Code hook to inspect all data sent to and\nreceived from MCP servers. Detects prompt injection, API key leakage, tool poisoning, ASCII smuggling, SSRF,\nBase64-encoded payloads, and Rug Pull attacks. Provides PASS/WARN/BLOCK decisions with per-server configuration,\nallowlisting, and logging. Zero dependencies, ~60ms latency."}]}}