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Qiniso

Qiniso

Official
by qinisolabs
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TypeScript
Hybrid

validate_iban

Verify an IBAN by checking its country, length, and checksum to ensure it is valid before processing payments or invoices.

Instructions

USE THIS to verify an IBAN (international bank account number) before relying on it — instead of guessing whether it looks right. Checks the country, the country-specific length, and the ISO 7064 mod-97 checksum, and returns the country, check digits and BBAN. Call this whenever a user supplies a bank account for a payment, payout or invoice.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "iban": "<iban>"
    },
    "name": "validate_iban"
  }
}

Input Schema

NameRequiredDescriptionDefault
ibanYesThe IBAN to validate; spaces are ignored.

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

A4.3/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Describes validation logic (country, length, checksum) and return values. No annotations to contradict; description adds value beyond no annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences, no fluff. First sentence gives imperative use, second lists checks and outputs. Very concise.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a single-parameter validation tool with no output schema, the description fully covers what it does, how it validates, and what it returns. No gaps.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema already fully describes the parameter (100% coverage). Description does not add new parameter-level detail beyond schema, so baseline 3.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states it validates IBAN, specifies checks (country, length, checksum) and outputs (country, check digits, BBAN). Distinguishes from many sibling validation tools.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly says 'USE THIS to verify an IBAN' and 'Call this whenever a user supplies a bank account'. Provides clear context, though missing explicit exclusions for when not to use.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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