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mcp/harbor
Verified official

Syl Guardian MCP

v0.3.0

io.sylai/guardian

Causal guardrail: pass/caution/hold verdict on a causal claim before an agent acts.

transport:streamable-http tools:2
View source Website

Target client

run in your project directory 

claude mcp add --transport http guardian https://guardian.sylai.io/mcp

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

guardian_review

guardian review

guardian_request_upload

guardian request upload

All 2 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.