Koskamo

B20 Check MCP

Verifies B20 tokens on the Base blockchain by checking issuer powers, detecting imposter contracts, and returning signed EIP-712 verdicts. It allows agents to determine if a token has active admin roles or backdoors, providing a safety check for DeFi interactions without requiring API keys for the demo route.

Visit B20 Check

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

B20 Check MCP logo, by B20 CheckVendor evidenceLocal stdioSource reviewed; not executedOperated by B20 Check
Vendor documentation

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Official MCP Registry namespace is tied to b20check.com ·

What you can do with it

  • Verify if a B20 token on Base is safe from issuer backdoors
  • Detect imposter tokens by checking issuer powers and admin flags
  • Retrieve signed EIP-712 verdicts for token safety assessment

Source and maintenance

Vendor evidenceRegistry 0.1.1
mcp-registry: com.b20check/b20check@0.1.1Project website

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

b20check-mcp 0.1.1

npm
b20check-mcp package definition
{
  "version": "0.1.1",
  "transport": "stdio",
  "identifier": "b20check-mcp",
  "registryType": "npm",
  "registryBaseUrl": "https://registry.npmjs.org"
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "b20-check-mcp-b20check-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "b20check-mcp@0.1.1"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "b20-check-mcp-b20check-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "b20check-mcp@0.1.1"
      ]
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "b20-check-mcp-b20check-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "b20check-mcp@0.1.1"
      ]
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "b20-check-mcp-b20check-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "b20check-mcp@0.1.1"
      ]
    }
  }
}

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