Leadbase | AI B2B Lead Generation: MCP server (AI & agents) in 2026

AI B2B lead generation: find matching companies and decision-makers. Start with 200 free credits.

Reachable on 2026-10-27: sign-in required, tools not listed Rank 158 of 192 in AI & agents. Source: MCP Registry record, checked 2026-10-27.

Key facts

Type	MCP server, remote (streamable HTTP)
Category	AI & agents
Endpoint	https://www.leadbase.io/api/mcp
Registry name	io.leadbase/leadbase
Version (registry)	1.0.8
Published in registry	2026-10-23
Registry record updated	2026-10-23
Repository	https://github.com/leadbaseio/leadbase-plugin
Website	https://www.leadbase.io/en/docs/settings/mcp
Authentication	Sign-in required (the endpoint answered 401 with an authentication challenge)
Latest check	Reachable, sign-in required on 2026-10-27, 509 ms to initialize
Checks passed	0 of 1 daily checks
Source	https://registry.modelcontextprotocol.io/v0/servers/io.leadbase%2Fleadbase/versions/latest (pulled 2026-10-27)

Verification history

One probe a day: initialize, then tools/list, nothing else. Last 1 checks: 10-27 sign-in

Install

Claude Code

claude mcp add --transport http leadbase https://www.leadbase.io/api/mcp

Claude (claude.ai, Desktop)

Settings > Connectors > Add custom connector. Name: Leadbase | AI B2B Lead Generation. URL: https://www.leadbase.io/api/mcp

Cursor

{
  "mcpServers": {
    "leadbase": {
      "url": "https://www.leadbase.io/api/mcp"
    }
  }
}

Save as ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).

ChatGPT

Settings > Connectors > Advanced > Developer mode, then Create. Name: Leadbase | AI B2B Lead Generation. MCP server URL: https://www.leadbase.io/api/mcp. Authentication: OAuth.

Custom connectors need a plan with Developer mode; menu names change between releases.

Hermes Agent

mcp_servers:
  leadbase:
    url: "https://www.leadbase.io/api/mcp"

Add to ~/.hermes/config.yaml, then run /reload-mcp.

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