# Duo Data Utilities: IBAN, ISIN, VAT and Tax ID, Barcode, Timezone, Geo APIs (com.duoleads.api/data-utilities): tool descriptions scored

- tools/list taken: 2026-11-02 (UTC)
- From: [Official MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/com.duoleads.api%2Fdata-utilities/versions/latest)
- Connected to: https://api.duoleads.com/mcp
- Homepage: https://api.duoleads.com/
- Repository: https://github.com/hiesem/duo-data-utilities
- Scoring rules: v2
- Tools: 33
- Average: 51.8 / 100 (Cloudy)
- Near-identical pairs: 0

This page shows how Duo Data Utilities: IBAN, ISIN, VAT and Tax ID, Barcode, Timezone, Geo APIs (com.duoleads.api/data-utilities)'s tool descriptions scored, the issues found and the names of its tools and parameters. The descriptions are the server's own: read them where the copy came from.

Forecall asked the URL this server lists in the official MCP Registry for its tools/list once, on the date above, without calling any tool. The server may have changed since.

## Across the server

- Minor: 33 tools. Above 25, models start to tell tools apart less well.

## Tools

- `geo_distance`: 40 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `point_in_polygon`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
- `airport_lookup`: 46 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `solidity_function_selector`: 46 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `geohash_encode_decode`: 47 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `isin_cusip_sedol_validate`: 47 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `plus_code_encode_decode`: 47 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calendar_convert`: 48 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `money_split`: 48 / 100
  - Minor: Says nothing about what it returns.
- `country_lookup`: 49 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `iban_generate`: 49 / 100
  - Major: Says nothing about when to use it, or when not to.
- `iban_validate`: 49 / 100
  - Major: Says nothing about when to use it, or when not to.
- `string_similarity`: 49 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: The description mentions none of its 3 or more arguments.
- `url_parse`: 49 / 100
  - Major: Says nothing about when to use it, or when not to.
- `cyrillic_transliterate`: 50 / 100
  - Major: Says nothing about when to use it, or when not to.
- `currency_lookup`: 51 / 100
  - Minor: No `required` list, so every argument is optional.
- `nuts_region_lookup`: 51 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `slug_generate`: 51 / 100
  - Major: Says nothing about when to use it, or when not to.
- `gtin_barcode_validate`: 52 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: The description mentions none of its 3 or more arguments.
- `semver_compare`: 52 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `unicode_confusables_check`: 52 / 100
  - Major: Says nothing about when to use it, or when not to.
- `vat_tax_id_validate`: 52 / 100
  - Minor: Says nothing about what it returns.
- `rrule_expand`: 54 / 100
  - Major: Says nothing about when to use it, or when not to.
- `business_days_calculate`: 55 / 100
- `hash_generate`: 55 / 100
  - Major: Says nothing about when to use it, or when not to.
- `number_to_words`: 55 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
- `base_convert`: 56 / 100
  - Major: Says nothing about when to use it, or when not to.
- `crypto_address_validate`: 56 / 100
- `punycode_convert`: 57 / 100
  - Major: Says nothing about when to use it, or when not to.
- `timezone_convert`: 60 / 100
- `statistics_calculate`: 63 / 100
- `dst_transitions`: 64 / 100
- `jwt_decode`: 69 / 100

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