B20 Check is a Model Context Protocol (MCP) server: Verify B20 tokens on Base: issuer powers, imposter detection, signed EIP-712 verdicts. As an MCP server it plugs straight into AI assistants, exposing its functionality as tools the model can invoke on your behalf.
You can run B20 Check two ways: connect to the hosted endpoint at https://b20check.com/mcp with no local install, or run it on your own machine via the npm package b20check-mcp. The current release is v0.1.1.
You'll find B20 Check in the Development category here on mcp.site; it connects to Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and any other MCP client — see the install snippets below. If you maintain B20 Check for b20check.com, claim this listing to verify ownership, earn the Verified badge, and keep the details current.