Enrich & Deduplicate CRM Leads with OpenAI & BROSH MCP (n8n)

Enrich your CRM leads automatically—deduplicated with OpenAI + BROSH MCP in n8n

This n8n workflow enriches incoming CRM leads via a webhook, uses OpenAI (with web search) plus the BROSH MCP tools to prevent duplicates, and then creates or reuses Account and Contact records in BROSH CRM—returning a structured JSON result to your caller.

What this workflow does

• Receives lead data through an n8n webhook (POST request).
• Validates and normalizes the payload to a consistent contact/account structure. It requires:
  • At least one contact identifier (email, phone, or name)
  • At least one account identifier (company name or website)
• Enriches lead and company attributes using an OpenAI chat model with web search and the BROSH MCP API tools.
• Checks for duplicates in BROSH CRM for both Accounts and Contacts.
• Creates or reuses records in BROSH CRM. Both the Account and Contact are handled as typed as Lead, and the Contact is linked to the Account based on the duplicate-check results.
• Verifies the agent output by parsing and confirming that the returned Account and Contact IDs are present; validation warnings are flagged.
• Responds with structured JSON:
  • 200 success when both records are present
  • 422 error when validation fails or insertion is incomplete

Use cases

• Automatically enrich and deduplicate leads submitted from a web form or lead capture tool into BROSH CRM.
• Reduce duplicate Accounts/Contacts when importing or syncing leads from external sources.
• Standardize lead data quality by normalizing payload fields before enrichment.

Technical details

• Nodes / components: if, code, webhook, sticky note, n8nn8n-nodes-langchainagent, and respond to webhook.
• Integrations: OpenAI (chat model with web search) and BROSH MCP with endpoint https://mcp.brosh.io using HTTP Bearer Auth.
• Agent tools: OpenAI web search + BROSH MCP API tools for enrichment and duplicate checks.