ActionKit by Paragon + fast-agent: 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 fast-agent, 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 fast-agent, 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 fast-agent
• 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
• fast-agent installed and configured
• Compatible operating system (Node.js, Cross-platform, Edge Environments)

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 fast-agent

1. Open fast-agent 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 fast-agent:

Schedule Team Meeting

Create a Google Calendar event and notify team via Slack

Ask fast-agent: "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 fast-agent: "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 fast-agent: "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 fast-agent: "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 fast-agent
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

Poor Performance

Symptoms: Slow startup, High memory usage, Slow tool execution

Cause: Suboptimal configuration or resource constraints

Solution:

• Tune concurrency and pool size settings
• Optimize MCP server performance
• Check system resources and limits
• Profile application for bottlenecks

Agent Crashes Under Load

Symptoms: Out of memory errors, Process crashes

Cause: Resource limits exceeded

Solution:

• Reduce concurrency limits
• Increase memory limits if possible
• Implement graceful degradation
• Monitor resource usage patterns

MCP Server Timeouts

Symptoms: Tool execution timeouts, Connection errors

Cause: Server overload or network issues

Solution:

• Increase timeout values
• Implement retry logic
• Scale MCP server infrastructure
• Use connection pooling and caching

ActionKit by Paragon not appearing in fast-agent

Symptoms: Server not listed, Tools not available

Cause: Configuration or installation issue

Solution:

• Verify configuration syntax
• Check ActionKit by Paragon installation
• Restart fast-agent
• Check logs for error messages

Next Steps

Now that ActionKit by Paragon is integrated with fast-agent:

• Explore all ActionKit by Paragon capabilities through fast-agent
• Check out other MCP servers that work with fast-agent
• 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 fast-agent MCP guide
• Join the MCP community discussions