Duo Data Utilities: IBAN, ISIN, VAT & Tax ID, Barcode, Timezone, Geo APIs MCP: what works in Claude, ChatGPT, Cursor, and Grok Bot
IBAN, ISIN, VAT/tax ID, GTIN validation; timezone, geo, text, chain utilities. Pay per call
Registry name: com.duoleads.api/data-utilities (v1.0.3) | GitHub stars
Status grid
| App | Status | Date tested |
|---|---|---|
| Claude | Untested | Not yet tested |
| ChatGPT | Untested | Not yet tested |
| Cursor | Untested | Not yet tested |
| Grok Bot | Untested | Not yet tested |
| MCP Inspector (reference client) | Untested | Not yet tested |
| MCP TypeScript SDK (reference client) | Untested | Not yet tested |
Hands-on test results
No hands-on tests yet. We do not publish results until we have actually tested.
Automated handshake
No public remote endpoint to check (local or package-only server).
Gotchas
None recorded yet. Gotchas come only from hands-on tests.
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