Guardrails MCP Server
Enables AI agents to integrate with Guardrails to check user values, make aligned decisions, and respect faith-based preferences. It provides tools for profile management, rule-based compatibility checks, and faith-aware scheduling.
README
Guardrails MCP Server
MCP (Model Context Protocol) server for Guardrails — the conscience layer for autonomous agents.
Allows any MCP-compatible AI agent (Claude, Cursor, Windsurf, etc.) to natively use Guardrails to check user values, make aligned decisions, and respect faith-based preferences.
Transport
Streamable HTTP (MCP spec 2025-03-26) at /mcp endpoint.
Tools
| Tool | Description |
|---|---|
create_profile |
Create a new user values profile |
get_profile |
Retrieve a user's values profile |
update_profile |
Update profile domains |
check |
Rule-based compatibility check |
decide |
LLM-powered decision (premium, BYOK) |
calendar |
Faith-aware calendar/scheduling |
get_taxonomies |
List available value domains |
list_configurations |
List custom configs |
create_configuration |
Create custom config |
update_configuration |
Update custom config |
delete_configuration |
Delete custom config |
Agent Configuration
Claude Desktop / Cursor / Windsurf
Add to your MCP config:
{
"mcpServers": {
"guardrails": {
"url": "https://mcp.useguardrails.com/mcp"
}
}
}
Every tool requires your Guardrails api_key as a parameter.
Environment Variables
| Variable | Default | Description |
|---|---|---|
PORT |
3001 |
Server port |
GUARDRAILS_API_URL |
https://api.useguardrails.com |
Guardrails REST API base URL |
Development
npm install
npm run dev
Deployment
Deployed as a separate Railway service in the same project as the API.
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