feat: Add LeadMagic B2B data enrichment plugin with 9 actions

Overview

Adds LeadMagic integration with 9 B2B data enrichment actions for lead generation and company research workflows.

This PR supersedes #162 with additional improvements and fixes.

Actions Included

People Operations (6 actions)

• Email Finder: Find email addresses from first name, last name, and company domain
• Email Validation: Validate email addresses and check deliverability
• Mobile Finder: Find mobile phone numbers from LinkedIn profiles
• Role Finder: Find people at companies by their role/title
• Profile Search: Search for LinkedIn profiles by name and company
• B2B Profile Email: Get B2B profile data and email from LinkedIn URL

Company Operations (3 actions)

• Company Search: Search for companies by name or domain
• Company Funding: Get company funding and investment data
• Technographics: Get company technology stack information

Implementation Details

Architecture

• ✅ Follows plugin architecture from CONTRIBUTING.md
• ✅ Uses native fetch API (no SDK dependencies per guidelines)
• ✅ Standardized output format: { success: boolean, data?: object, error?: object }
• ✅ Proper error handling and validation
• ✅ Template variable support for all input fields
• ✅ Config field filtering implemented

Code Quality

• ✅ All type checks pass (pnpm type-check)
• ✅ Code formatted with ultracite (pnpm fix)
• ✅ No console.log or debug code
• ✅ Follows existing integration patterns

Testing

• ✅ All 9 actions tested and working
• ✅ Template variables working correctly
• ✅ Error handling validated
• ✅ Connection test function working
• ✅ Integration with workflow builder UI verified

Files Changed

New Files

• plugins/leadmagic/ - Complete LeadMagic plugin
  • index.ts - Plugin definition with 9 actions
  • credentials.ts - Credential type definition
  • icon.tsx - LeadMagic icon component
  • test.ts - Connection test function
  • steps/ - 9 step functions for each action
• public/leadmagic-logo.png - LeadMagic logo asset

Modified Files

• plugins/index.ts - Auto-generated plugin registration
• lib/workflow-executor.workflow.ts - Config filtering improvements to prevent extra fields from being passed to actions

API Details

Base URL: https://api.leadmagic.io

Authentication: API key via X-API-Key header

Rate Limits: Handled by LeadMagic API

Use Cases

This integration enables workflows for:

• Lead enrichment and validation
• Contact discovery and verification
• Company research and intelligence
• Sales prospecting automation
• Data enrichment pipelines

Checklist

• Code follows existing patterns
• All tests pass (pnpm type-check)
• Code is formatted (pnpm fix)
• No SDK dependencies (uses fetch)
• Standardized output format
• Template variables supported
• Error handling implemented
• Connection test working
• All actions tested manually
• Follows CONTRIBUTING.md guidelines

Related

• Supersedes #162
• Follows same pattern as existing integrations (Firecrawl, Resend, Instantly, etc.)

---

Pull Request opened by Augment Code with guidance from the PR author