Check Digit Validator
Rank #85,224com.gumballtools/check-digit
Validates IBAN/ISBN/EAN/Luhn checksums and finds the one wrong digit
Check Digit Validator is a Model Context Protocol (MCP) server published by bwalvoord. It ranks #85,224 of 126,487 servers tracked on MCP Toplist. Check Digit Validator is listed on Official MCP, with 1 tracked version. It was first listed on Sep 5, 2026 and most recently updated on Sep 5, 2026.
Ranks ahead of 41,263 of 126,487 servers on MCP Toplist.
Use Check Digit Validator
No credentials or required configuration declared — add it to your MCP client and go.
claude mcp add --transport http check-digit https://check-digit.gumballtools.com/api/mcp[mcp_servers.check-digit]
url = "https://check-digit.gumballtools.com/api/mcp"Add to ~/.codex/config.toml.
https://check-digit.gumballtools.com/api/mcpSettings → Connectors → “Add custom connector”, then paste this URL.
{
"mcpServers": {
"check-digit": {
"url": "https://check-digit.gumballtools.com/api/mcp"
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).
{
"servers": {
"check-digit": {
"type": "http",
"url": "https://check-digit.gumballtools.com/api/mcp"
}
}
}Save as .vscode/mcp.json in your workspace.
{
"mcpServers": {
"check-digit": {
"serverUrl": "https://check-digit.gumballtools.com/api/mcp"
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
{
"mcpServers": {
"check-digit": {
"url": "https://check-digit.gumballtools.com/api/mcp"
}
}
}Show your rank
Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.
[](https://mcptoplist.com/server/com.gumballtools%2Fcheck-digit)<a href="https://mcptoplist.com/server/com.gumballtools%2Fcheck-digit"><img src="https://mcptoplist.com/badge/com.gumballtools%2Fcheck-digit.svg" alt="MCP Toplist: #85,224 of 126,487" /></a>Variants: append ?metric=score or ?metric=stars to the image URL.
Listed on 1 registry
bwalvoord
Available versions (1)
| Version | Published |
|---|---|
| 0.1.0 | Sep 5, 2026 |
Frequently asked questions
- Who maintains Check Digit Validator?
- Check Digit Validator is maintained by bwalvoord, which publishes 16 MCP servers (16 total versions) tracked on MCP Toplist.
- Is Check Digit Validator listed on the Official MCP Registry?
- Yes — Check Digit Validator is listed on the Official MCP Registry.
- How many versions does Check Digit Validator have?
- MCP Toplist tracks 1 version of Check Digit Validator, most recently published on Sep 5, 2026.
- Where can I find the source code for Check Digit Validator?
- The source code for Check Digit Validator is hosted at github.com/bwalvoord/gumball.
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