Limitguard Lead Verification MCP server

Limitguard MCP Server

Check Dutch and Belgian companies, sales leads and crypto wallets before you deal with them, over the Model Context Protocol: the KVK (Netherlands) and KBO (Belgium) registers, EU VAT (VIES), the OFAC, EU and UN sanctions lists and wallet risk on Base and Solana, with the source and date of every answer.

Server URL: https://api.limitguard.ai/mcp Transport: Streamable HTTP (POST) Auth: API key (Bearer), plus an x402 micropayment per call on the free and sandbox tiers

What it is: Limitguard is a lead validation service for lead generation agencies, B2B marketing and sales teams: it checks the company behind each lead against official business registers (full coverage in the Netherlands and Belgium), EU VAT and sanctions lists, with website age in the company check, and returns proceed, review or block with the source on every line. Developers and AI agents can use its HTTP API, MCP server and A2A service, hosted in the EU.

Start here: On MCP a paid tool takes an x402 payment per call, or debits prepaid credit (a paid key, or a funded workspace); walletsanctionspreview, sanctionspreview and gettrust_score are free; the free sandbox key returns mock data on the REST API only, not on MCP. Lead Verify $0.27 per lead and agent check $0.75 per wallet; $0.11-1.85 per call; entity and risk checks $0.88-1.05 fresh ($1.50 KYB), $0.11 cached ($0.25 KYB) when available.

Features

• Lead verify for Dutch and Belgian sales leads: is it a real, active company? A verdict, a 0-100 lead score and one action per flag ($0.27).
• Company check against the KVK and KBO registers, EU VAT (VIES), the domain and the IBAN, with a 0-100 score and a recommendation.
• Sanctions screen of company and person names against the OFAC, EU and UN lists, with a free yes/no preview.
• Crypto wallet screen on Base and Solana: OFAC address match, balances, wallet age, recent activity and risk rules with advice ($0.11).
• Free wallet sanctions check: a yes/no against the OFAC list.
• AI agent wallet check before your agent pays: sanctions, balance, ERC-8004 identity and public reputation ($0.75).
• Pay per call in USDC on Base or Solana with x402, or with an API key and prepaid credit. A check that fails is not charged.
• MCP, REST and A2A, and agents can pay inside A2A with x402.
• Sources on every answer, with the date each one was read. Hosted in the EU.

Tools

tools/list is public: connect and read it without any credential. These are the names it returns, and the names tools/call accepts:

Shortened. The full README is on GitHub.