Lead411
Lead411 MCP is an MCP server that provides B2B company search, lead generation, and contact enrichment via Lead411’s hosted SSE endpoint.
About
Lead411 MCP (io.github.kunal-lead411/lead411) connects AI agents to Lead411’s B2B data through a hosted SSE remote at mcp.lead411.com, so founders can research companies and enrich contacts without building scrapers. You supply an Lead411 API key via the X-API-KEY header; the server description centers on lead generation, company search, and enrichment—natural fits for audience work and later outbound, with the catalog shelf anchored at Idea / audience for first use when validating who pays. It suits agent-first GTM stacks (Claude Code, Cursor) that treat prospect research as conversational queries. Complexity is beginner for MCP wiring but intermediate for interpreting firmographic filters and compliance around contact data. This is a data vendor MCP integration, not a copywriting or SEO skill.
- Remote SSE MCP at https://mcp.lead411.com
- B2B lead generation, company search, and contact enrichment
- Authenticates with required secret header X-API-KEY
- Registry version 1.0.0 with website lead411.com
- No local npm package—hosted MCP endpoint
Lead411 by the numbers
- Data as of Jul 7, 2026 (Skillselion catalog sync)
claude mcp add --transport sse lead411 https://mcp.lead411.com/ --header "X-API-KEY: YOUR_X_API_KEY"Add your badge
Show developers this MCP server is listed on Skillselion. Paste this into your README.
| Transport | SSE |
|---|---|
| Auth | Required |
What it does
Pull B2B company lists, search firms, and enrich contacts from Lead411 while researching who to sell to.
Who is it for?
Best when you're doing outbound validation, niche B2B tools, or services and already budget for Lead411.
Skip if: B2C consumer apps, developers without a Lead411 subscription/API key, or teams that forbid third-party contact enrichment.
What you get
After you add the remote MCP with X-API-KEY, your agent can query Lead411 for companies and enriched contacts inside the same research session.
- Agent-queryable B2B company search results
- Contact enrichment payloads from Lead411 tools
- Faster ICP and outbound list building without custom scrapers
By the numbers
- Registry version 1.0.0
- Remote SSE URL https://mcp.lead411.com
- Required secret header X-API-KEY
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Hosted B2B data MCP, not a CRM replacement or generic web-scraping skill.
FAQ
Who is Lead411 MCP for?
and small-team B2B developers using MCP agents who need company and contact intelligence from Lead411.
When should I use Lead411 MCP?
During Idea audience research—and again in Grow when refreshing lists—when you need searchable firms and enriched contacts from the agent.
How do I add Lead411 MCP to my agent?
Register the remote SSE URL https://mcp.lead411.com in your MCP client and set the required X-API-KEY header to your Lead411 API key.