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CheckDigit

Unverified Claim & verify → Version Control

Offline check-digit validation for IBAN, BIC, EU VAT, GTIN/EAN/UPC and ISBN. Format check only.

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Overview Installation

Overview

CheckDigit is a Model Context Protocol server that performs offline check-digit validation for IBAN, BIC, EU VAT, GTIN/EAN/UPC, and ISBN numbers, handling format verification only. Any MCP-compatible AI assistant can call CheckDigit's tools directly within conversations or agent workflows.

The server runs as a remote endpoint at https://checkdigit.mike-tusa.workers.dev/mcp, requiring only an API Key for authentication. No local installation is needed. The latest release is v0.2.1, available from https://checkdigit.mike-tusa.workers.dev/.

CheckDigit is listed under Version Control on mcp.site and works with MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. If you maintain this server, claim this listing to verify ownership and keep the information current.

▸Hosted endpoint — Streamable HTTP · https://checkdigit.mike-tusa.workers.dev/mcp

Installation

Settings → Connectors → Add custom connector
Name: CheckDigit
URL:  https://checkdigit.mike-tusa.workers.dev/mcp

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