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Verify B20 tokens on Base: issuer powers, imposter detection, signed EIP-712 verdicts.
npx @getmcp/cli add com.b20check/b20checkRequires Node.js 18+. Community-contributed server. Review source before installing.
Config file: ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"com.b20check/b20check": {
"command": "npx",
"args": [
"-y",
"b20check-mcp"
]
}
}
}