ai.greyridgesignals/business-verification-mcp

up checked 2026-11-12T22:37:40.008Z

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Publisher-provided title

US Business Verification (KYB) MCP Server

Publisher-provided description

Keyless KYB: verify, OFAC SDN + GLEIF ownership/UBO graph (parents+subsidiaries). NY/CO/CT. No key.

Summary by lookupd

Verifies US business registrations against state registries and screens entities against OFAC sanctions lists, without an API key.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http business-verification https://business-verification-mcp.sigrunner.workers.dev/mcp

Codex, remote (streamable-http)

codex mcp add business-verification --url https://business-verification-mcp.sigrunner.workers.dev/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "business-verification": {
      "url": "https://business-verification-mcp.sigrunner.workers.dev/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (6 tools)

Publisher-provided text

• verify_business KYB / know-your-business verification (FREE TASTE). Verify one or more US businesses against official, keyless state business-registry sources (currently NY, CO
• screen_sanctions OFAC SDN sanctions screening / watchlist screen per name. Screen one or more names directly against the live OFAC SDN (Specially Designated Nationals) sanctions
• list_states List the US states currently verifiable through this server (keyless, public-domain official registries) and how each is addressed. No network call.
• lookup_entity Authoritative lookup of ONE business by its registry entity_id within a state. Unlike verify_business this does NO fuzzy name matching — the entity_id is the re
• search_entities Browse / enumerate businesses within ONE state whose official name begins with (then contains) a fragment — the "list the companies in this state" surface. Unli
• map_ownership Corporate OWNERSHIP GRAPH / UBO (ultimate beneficial owner) tracer for a company (FREE TASTE). Given a company NAME or its LEI, trace its ownership using the ke

Changes

Newest first, as lookupd saw them

• 2026-11-12: tool schema changed: verify_business
• 2026-11-12: tool added: map_ownership
• 2026-11-12: tool schema changed: lookup_entity
• 2026-11-12: version 0.5.0 → 0.7.0
• 2026-11-12: description changed
• 2026-11-11: description changed
• 2026-11-11: version 0.4.0 → 0.5.0
• 2026-11-11: description changed
• 2026-11-11: version 0.3.1 → 0.4.0

Details

• Version: 0.7.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 227 ms
• First indexed: 2026-11-06T21:17:25.176Z
• Last seen in registry: 2026-11-12T21:17:23.800Z
• Repository: https://github.com/rezearcher/business-verification-mcp
• Website: https://business-verification-mcp.sigrunner.workers.dev

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