Verify B20 tokens on Base: issuer powers, imposter detection, signed EIP-712 verdicts.
Setup
Choose your client, copy the config, then fill in any required environment variables.
Local
claude mcp add b20-check -- npx -y b20check-mcp~/.codex/config.toml
[mcp_servers.b20-check]
command = "npx"
args = ["-y", "b20check-mcp"]
# codex mcp add b20-check -- npx -y b20check-mcp~/.cursor/mcp.json
{
"mcpServers": {
"b20-check": {
"command": "npx",
"args": [
"-y",
"b20check-mcp"
]
}
}
}.vscode/mcp.json
{
"servers": {
"b20-check": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"b20check-mcp"
]
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"b20-check": {
"command": "npx",
"args": [
"-y",
"b20check-mcp"
]
}
}
}claude_desktop_config.json
{
"mcpServers": {
"b20-check": {
"command": "npx",
"args": [
"-y",
"b20check-mcp"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"b20-check": {
"command": "npx",
"args": [
"-y",
"b20check-mcp"
]
}
}
}Remote
claude mcp add --transport http b20-check https://b20check.com/mcp~/.codex/config.toml
[mcp_servers.b20-check]
url = "https://b20check.com/mcp"
# codex mcp add b20-check --url https://b20check.com/mcp~/.cursor/mcp.json
{
"mcpServers": {
"b20-check": {
"url": "https://b20check.com/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"b20-check": {
"type": "http",
"url": "https://b20check.com/mcp"
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"b20-check": {
"httpUrl": "https://b20check.com/mcp"
}
}
}claude_desktop_config.json · Customize › Connectors › Add custom connector
{
"mcpServers": {
"b20-check": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://b20check.com/mcp"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"b20-check": {
"url": "https://b20check.com/mcp"
}
}
}