Syl Guardian for Claude.ai

io.sylai/guardian

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

client:Claude.ai transport:streamable-http tools:2

Install Syl Guardian in Claude.ai

Settings → Connectors → Add custom connector

https://guardian.sylai.io/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

guardian_review
guardian_request_upload

Syl Guardian in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

Syl Guardian MCP server