Chestny Znak MCP server

Install

npx skillfoxx add mcp/chestnyznak-mcp

claude mcp add --transport stdio chestnyznak -- npx -y @theyahia/chestnyznak-mcp

{
  "mcpServers": {
    "chestnyznak": {
      "command": "npx",
      "args": [
        "-y",
        "@theyahia/chestnyznak-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "chestnyznak": {
      "command": "npx",
      "args": [
        "-y",
        "@theyahia/chestnyznak-mcp"
      ]
    }
  }
}

code --add-mcp '{"name":"chestnyznak","type":"stdio","command":"npx","args":["-y","@theyahia/chestnyznak-mcp"]}'

{
  "servers": {
    "chestnyznak": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@theyahia/chestnyznak-mcp"
      ]
    }
  }
}

codex mcp add chestnyznak -- npx -y @theyahia/chestnyznak-mcp

[mcp_servers.chestnyznak]
command = "npx"
args = ["-y", "@theyahia/chestnyznak-mcp"]

{
  "mcpServers": {
    "chestnyznak": {
      "command": "npx",
      "args": [
        "-y",
        "@theyahia/chestnyznak-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "chestnyznak": {
      "command": "npx",
      "args": [
        "-y",
        "@theyahia/chestnyznak-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "chestnyznak": {
      "command": "npx",
      "args": [
        "-y",
        "@theyahia/chestnyznak-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "chestnyznak": {
      "command": "npx",
      "args": [
        "-y",
        "@theyahia/chestnyznak-mcp"
      ]
    }
  }
}

{
  "mcp": {
    "chestnyznak": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@theyahia/chestnyznak-mcp"
      ]
    }
  }
}

{
  "context_servers": {
    "chestnyznak": {
      "command": "npx",
      "args": [
        "-y",
        "@theyahia/chestnyznak-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "chestnyznak": {
      "command": "npx",
      "args": [
        "-y",
        "@theyahia/chestnyznak-mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "chestnyznak": {
      "command": "npx",
      "args": ["-y", "@theyahia/chestnyznak-mcp"]
    }
  }
}

This is third-party code. Review the repository files before installing.

What it does

The server lets an agent check a Chestny Znak marking code (DataMatrix, QR or EAN13) and get its authenticity status, product name, category, manufacturer and owner instead of a manual trip to the personal account. Three public tools work with no registration: a single code check, a detailed product card, and a batch check of up to 50 codes at once. Two token-authorized tools search a product by GTIN and fetch CIS (identification code) information from the True API. The server belongs to the same author's WWmcp series: a shared core provides request retries and two transports, stdio and Streamable HTTP, with HTTP listening on localhost only by default and no authentication on /mcp.

Who it is for. For merchandisers, procurement staff and quality control teams who need to quickly check product marking without logging into the Chestny Znak personal account.

Example request

Check marking code 0104600702028445 and tell me the product's owner and manufacturer

Limitations

GTIN search and CIS data need a True API token from CRPT. Searching a product by name or brand is not supported; that needs a separate National Catalog API. HTTP mode listens on localhost only by default and has no authentication of its own; opening it externally with --host=0.0.0.0 is explicitly at your own risk.

How to disable. Run claude mcp remove chestnyznak or remove the chestnyznak block from your MCP client config.

MCP

Transport

stdio, http

Authentication

API key

Security check

• The public tools only read marking status; they change nothing in the Chestny Znak system
• The authorized tools send a True API token, so keep it in environment variables only

README in short

The Russian README states the server's purpose plainly: check a marking code without the personal account. It shows Claude Desktop configs with and without a token, a Claude Code command, and running in Streamable HTTP mode with DNS-rebinding protection. Tables cover the three environment variables and all five tools with their arguments, and it details the check_marking_code and get_product_info JSON response format with example status and owner fields.

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