B2B DATA MCP SERVER
The B2B Data MCP Server for Company Search & Prospecting
Connect your AI assistant to live company search and verified work emails. Describe your ideal customer in plain words—Claude, Cursor, Windsurf, or your custom agent searches companies for free and pulls verified work emails for 1 credit each.
Company search
0 credits
Free search & pagination
Verified emails
1 credit
Misses are always free
Transport
Streamable HTTP
Plus 1-click Claude OAuth
Free grant
25 credits
No card required
Quickstart
Connect your assistant in 60 seconds
Works out of the box with Claude Desktop, Claude Code, Cursor, Windsurf, VS Code, and custom autonomous agent loops.
No API key needed. You sign in to Leadscart instead.
Open Claude's connectors page and click Add custom connector.
Fill in the two boxes:
NameLeadscartURLhttps://leadscart.io/api/mcpClick Add, then Connect. Sign in to Leadscart and click Allow.
Start a new chat and ask for people. For example:
“Find 10 VP Sales at US fintechs with 50–200 employees”
Search is free
Works in the Claude desktop and mobile apps too. On a Team or Enterprise plan, a Claude owner adds it once under Organization settings → Connectors.
To disconnect later, revoke “Claude (connected)” under API keys in Settings → API & MCP.
Engineered for AI agents
Why builders choose Leadscart over legacy data APIs
Most B2B data providers were built for human web dashboards or charge exorbitant fees for broad queries. Leadscart is built for autonomous AI agents.
Zero-Credit Discovery & Company Search
Agents explore filters iteratively. Broad queries, keyword matching, and headcount narrowing shouldn't drain your balance. With Leadscart, searching companies and viewing matching candidates costs 0 credits.
Guaranteed Verified Emails Only
Never pay for guesses, scrape junk, or unverified catch-alls. Every address is verified at discovery. If no deliverable address is found, the call costs 0 credits.
Built-in Agent Budget Guardrails
Every MCP response returns a credits envelope (spent and remaining). Email reveals are capped at 25 per request, with daily fair-use limits so a runaway loop never empties your balance.
Native OAuth & Streamable HTTP
One-click browser login in Claude web, desktop, and mobile. No keys to copy or rotate for Claude. Streamable HTTP transport for Cursor, Windsurf, Zed, and LangChain/CrewAI agents.
Tool Specifications
The complete B2B prospecting toolset
Your AI assistant reads these tool schemas directly, picks the right function, and executes searches, list building, and email verification seamlessly.
people_searchLiveSearch contacts by title, company, industry, headcount, country and technology.
- in
- { filters: { titles, countries, employee_ranges, … }, page? 1–50 }
- out
- ok { people, total } · too_broad / no_matches { suggestions }
- cost
- Free to search and export · 1 per verified email or phone
email_findLiveFind verified work emails, and phone numbers where we have them, for leads already on a List.
- in
- { lead_ids: string[] ≤ 25, idempotency_key? }
- out
- { results: { lead_id, email, phone, status }[] }
- cost
- 1 per verified email or phone · misses free
list_createLiveCreate a List to collect leads.
- in
- { name }
- out
- { id, name }
- cost
- Free
list_addLiveAdd people (by LinkedIn URL) to a List. Suppressed people are skipped.
- in
- { list_id, people: { linkedin_url, … }[] ≤ 500 }
- out
- { added, already_in_list, suppressed, lead_ids }
- cost
- Free
list_exportLiveExport a List as JSON rows or CSV.
- in
- { list_id, include_emails? } (REST: ?format=json|csv)
- out
- { rows } or CSV
- cost
- Free to export
credits_balanceLiveCurrent balance and credits expiring soon.
- in
- {}
- out
- { balance, lists_equivalent, expiring_within_7_days, next_expiry }
- cost
- Free
MCP for B2B SaaS
Real-world outbound prompts for your assistant
Stop clicking dropdowns in cumbersome sales portals. Describe your targeting in one sentence and let the model do the work.
Account-Based Prospecting (ABM)
Search companies by tech stack, headcount, and executive role without touching a browser.
→ Uses people_search · 0 credits spent
List Building & Email Reveal
Save vetted candidates into a named list and reveal deliverable work emails with cost confirmation.
→ Uses list_create, list_add, and email_find · 1 credit per verified email
Domain Enrichment & Export
Enrich inbound leads or competitor accounts and hand off a clean CSV to your email sequencer.
→ Uses people_search and list_export · Free CSV export
Market Comparison
Leadscart MCP vs. Alternative Approaches
See how Leadscart's native Model Context Protocol server compares to other prospecting options.
| Feature | Leadscart MCP | Prospeo MCP | Apollo (API/Scraping) |
|---|---|---|---|
| Company & Person Search | Free (0 credits) | 1 credit per page | No native MCP / API $$ |
| Email Reveal Cost | 1 credit (verified only) | 1 credit (or 10 with phone) | Credits consumed on fetch |
| Misses & Unverified Addresses | Always Free | Free | Often charged for unverified |
| Claude Connection | 1-click OAuth (no key) | OAuth / API key | None (Custom code required) |
| IDE Clients (Cursor, Windsurf) | Streamable HTTP (Native) | Streamable HTTP | None |
| Free Test Credits | 25 free credits, no card | Limited trial | Demo required |
Fine Print
Frequently asked questions about B2B MCP
Everything you need to know about connecting, credits, and data accuracy.
The Model Context Protocol (MCP) is an open standard introduced by Anthropic that connects AI assistants to external databases and live tools.
Leadscart's B2B Data MCP server allows assistants like Claude, Cursor, Windsurf, and Claude Code to search millions of business contacts, filter companies by technology, headcount, and geography, and retrieve verified work emails directly from your conversation or agent loop.
25 free credits · no credit card required
Start prospecting with MCP today.
Connect your AI assistant to live company and contact search. Search companies for free and pay only for verified work emails.