Connect ChatGPT to LeadMagic

For ChatGPT, ChatGPT Developer Mode, Responses API.

ChatGPT opens the LeadMagic sign-in when you install the plugin. Approve access, then @-mention LeadMagic in a chat.

Focused MCP endpoint

https://mcp.leadmagic.io/mcp/enrichment-core

Sign-in: ChatGPT opens the LeadMagic sign-in when you install the plugin. Approve access, then @-mention LeadMagic in a chat.

ChatGPT: add a custom MCP server

Recommended

manual · manual · OAuth

Full MCP support needs a Business, Enterprise or Edu workspace. OpenAI is renaming Connectors and Apps to Plugins, and developer-mode settings sit in different places by plan.

1Go to chatgpt.com/plugins and click +.
2Choose Add custom MCP server.
3Name: LeadMagic. Description: B2B enrichment. Server URL: https://mcp.leadmagic.io/mcp/enrichment-core.
4Set authentication to OAuth, then click Create as a plugin.
5Install the plugin and sign in to LeadMagic.

https://mcp.leadmagic.io/mcp/enrichment-core

Responses API (developers)

json · manual · Token

The Responses API has no OAuth flow: your app passes a token in `authorization` on every request. Needs a LeadMagic OAuth access token (issued by https://clerk.leadmagic.io, scope mcp_all, valid for one day). LeadMagic API keys are rejected.

{
  "type": "mcp",
  "server_label": "leadmagic_enrichment",
  "server_url": "https://mcp.leadmagic.io/mcp/enrichment-core",
  "authorization": "YOUR_LEADMAGIC_OAUTH_TOKEN",
  "require_approval": "never",
  "allowed_tools": ["search_people","search_companies","find_work_email","validate_work_email","find_company_funding","enrich_company","find_local_leads","find_mobile_number","b2b_profile_to_work_email","linkedin_profile_to_work_email","detect_job_change","list_company_competitors","get_company_technographics","find_lookalike_companies","find_people_by_role","find_company_employees","search_profile","email_to_b2b_profile","find_personal_email","account_intel","enrich_contact","find_decision_makers","get_account_analytics","check_credit_balance","preview_cost"]
}

Client documentation

OpenAI: custom MCP servers OpenAI: plugin authentication OpenAI: Responses API remote MCP

Back to client list Full MCP setup docs