ActionKit by Paragon + LibreChat: Complete MCP Integration

ActionKit by Paragon is a MCP server that Connect to 130+ SaaS integrations (e.g. Slack, Salesforce, Gmail) with Paragon’s ActionKit API..

When integrated with LibreChat, you can:

• Connect to 130+ SaaS applications via ActionKit API
• Handle OAuth and API authentication for integrations
• Execute custom OpenAPI action definitions

This guide provides step-by-step instructions to set up ActionKit by Paragon in LibreChat, including configuration, examples, and troubleshooting.

What You'll Achieve

After completing this setup:

• ActionKit by Paragon will be fully integrated and operational
• You can use ActionKit by Paragon tools directly in LibreChat
• All ActionKit by Paragon capabilities will be available for your workflows
• Access to 4 different tools

Prerequisites

Before starting, ensure you have:

• Node.js 22.14.0
• npm
• Paragon account
• Paragon project identifier from dashboard
• RS256 JWT signing key for authentication
• LibreChat installed and configured
• Compatible operating system (Docker (Recommended), Kubernetes, Local Installation, Cloud Platforms)

Installation

Step 1: Install ActionKit by Paragon

Install using npm:

git clone https://github.com/useparagon/paragon-mcp.git && cd paragon-mcp && npm install

Verify installation:

npm run start

Configuration

Step 2: Configure LibreChat

1. Open LibreChat settings
2. Navigate to MCP server configuration
3. Add ActionKit by Paragon server with appropriate settings
4. Save and restart if needed

Examples

Once configured, you can use ActionKit by Paragon in LibreChat:

Schedule Team Meeting

Create a Google Calendar event and notify team via Slack

Ask LibreChat: "Schedule a team standup for tomorrow at 9 AM and send a Slack notification to the dev-team channel"

Expected Result: Calendar event created and Slack message sent with meeting details

Create Sales Lead

Add new lead to Salesforce from customer inquiry

Ask LibreChat: "Create a new lead in Salesforce for John Doe from Acme Corp with email [email protected]"

Expected Result: Lead record created in Salesforce with contact information and follow-up tasks

Email Campaign Follow-up

Send follow-up emails via Gmail for marketing campaign

Ask LibreChat: "Send a follow-up email to all prospects who opened our product demo email last week"

Expected Result: Targeted emails sent to qualified prospects with personalized content

Multi-Platform Data Sync

Sync customer data between HubSpot and Salesforce

Ask LibreChat: "Update all HubSpot contacts that were modified today in our Salesforce CRM"

Expected Result: Contact records synchronized with latest information across both platforms

Testing Your Setup

1. Launch LibreChat
2. Verify ActionKit by Paragon is available in the tools list
3. Test basic ActionKit by Paragon functionality

Troubleshooting

Common Issues

JWT Authentication Failed

Symptoms: 401 Unauthorized errors, Invalid token messages

Cause: Incorrect SIGNING_KEY or expired credentials

Solution:

• Verify SIGNING_KEY matches private key from Paragon dashboard
• Ensure key is in correct RS256 format
• Check PROJECT_ID is correct for your account
• Regenerate keys if necessary

Integration Not Available

Symptoms: Service not found errors, Integration disabled messages

Cause: Integration not enabled in Paragon project or LIMIT_TO_INTEGRATIONS restriction

Solution:

• Enable required integrations in Paragon dashboard
• Remove or update LIMIT_TO_INTEGRATIONS environment variable
• Verify integration is available in your Paragon plan
• Check integration-specific requirements

User Authorization Required

Symptoms: OAuth flow errors, Permission denied messages

Cause: User has not authorized the integration or scope issues

Solution:

• Guide user through OAuth authorization flow
• Check required scopes for the integration
• Verify callback URLs are configured correctly
• Re-authorize if tokens are expired

Server Connection Timeout

Symptoms: Connection timeouts, SSE endpoint not responding

Cause: Server not running or network connectivity issues

Solution:

• Start server with npm run start
• Verify PORT is not in use by another service
• Check firewall settings allow connections
• Test endpoint with curl: curl http://localhost:3001/health

MCP Server Not Connecting

Symptoms: Status shows "Disconnected" or "Error", Server not appearing in list, Connection timeout

Cause: Invalid configuration, missing dependencies, or server startup failure

Solution:

• Check librechat.yaml syntax is valid YAML
• Verify npx and Node.js are available (for stdio/command-based servers)
• Check server command and args are correct
• Review LibreChat logs for error messages: docker logs librechat
• Increase timeout value if server takes longer to initialize
• Ensure required ports are not blocked (for HTTP-based servers)

OAuth Authentication Failing

Symptoms: Status shows "OAuth Required", Redirect loop during auth, Token refresh errors

Cause: OAuth credentials not configured or redirect URLs incorrect

Solution:

• Verify OAuth clientId and clientSecret in librechat.yaml
• Check redirect URL is correctly set in OAuth provider settings
• Ensure authorizationUrl and tokenUrl are accessible
• Complete OAuth flow by clicking "Initialize" in MCP Settings panel
• Check browser console for OAuth-related errors

User Credentials Not Working

Symptoms: Prompts for credentials not appearing, Variables not substituted, Authentication errors

Cause: User credential variables incorrectly formatted or not entered

Solution:

• Use correct format: {{USER_VARIABLE_NAME}} in librechat.yaml
• Enter credentials through MCP Settings panel in UI
• Verify variable names match between config and UI
• Check credentials are saved per-user (not shared globally)

Tools Not Appearing in Chat

Symptoms: No tool dropdown available, MCP tools missing from interface, Server connected but tools unavailable

Cause: MCP server not properly integrated with chat endpoint or agent

Solution:

• Verify you are using an endpoint that supports MCP (not all models do)
• Check if Agent Builder is enabled and MCP tools are assigned to agent
• Restart chat session after adding new MCP servers
• Verify MCP server actually provides tools (some servers are resource-only)
• Check server logs to confirm tools are being discovered

Docker Deployment Problems

Symptoms: Container fails to start, Database connection errors, Port conflicts

Cause: Docker configuration issues or missing environment variables

Solution:

• Verify .env file is properly configured with all required variables
• Check MongoDB connection string is correct
• Ensure ports 3080 (frontend) and 3081 (backend) are available
• Run docker compose logs to view detailed error messages
• Verify Docker and Docker Compose versions meet minimum requirements

Performance Issues with MCP

Symptoms: Slow tool execution, Timeout errors, UI freezing during tool calls

Cause: Server timeout too short, inefficient MCP server, or network latency

Solution:

• Increase timeout values in librechat.yaml (both init and operation timeouts)
• Use HTTP transport instead of stdio for remote servers
• Monitor MCP server performance independently
• Consider caching for frequently accessed resources
• Use Streamable HTTP transport for production environments

ActionKit by Paragon not appearing in LibreChat

Symptoms: Server not listed, Tools not available

Cause: Configuration or installation issue

Solution:

• Verify configuration syntax
• Check ActionKit by Paragon installation
• Restart LibreChat
• Check logs for error messages

Next Steps

Now that ActionKit by Paragon is integrated with LibreChat:

• Explore all ActionKit by Paragon capabilities through LibreChat
• Check out other MCP servers that work with LibreChat
• Join the MCP community for tips and support
• Consider contributing to ActionKit by Paragon development

Need Help?

• Search for ActionKit by Paragon documentation
• Check the LibreChat MCP guide
• Join the MCP community discussions