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get_vat_rules_latam

Read-onlyIdempotent

Retrieve VAT/IVA rules for Latin American countries including standard rates, reduced rates, exempt categories, and withholding. Supports BR, MX, CL, AR, CO.

Instructions

Returns all VAT/IVA rules for a given Latin American country — standard rate, reduced rates, exempt categories, withholding rules, and special regimes. Returns { country, standard_rate, reduced_rates, exempt_categories, withholding, special_regimes, currency, notes }. Supports BR, MX, CL, AR, CO. Brazil returns ICMS/ISS/PIS/COFINS structure. Use when calculating LatAm invoice taxes, determining correct rate for e-commerce checkout, or building tax compliance workflows. Information provided as reference only — not legal or tax advice.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
country_codeYesTwo-letter ISO country code. Example: 'BR', 'MX', 'CL', 'AR', 'CO'

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
countryNo
standard_rateNo
reduced_ratesNo
exempt_categoriesNo
withholdingNo
special_regimesNo
currencyNo
notesNo
disclaimerNo
errorNo
Behavior4/5

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

Annotations already indicate readOnly and idempotent. The description adds context: reference-only disclaimer, and special structure for Brazil (ICMS/ISS/PIS/COFINS). No contradiction with 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?

Concise paragraph front-loaded with main purpose. Every sentence adds value: purpose, output, supported countries, use cases, disclaimer. No wasted words.

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?

Description fully covers what the tool does, what it returns, when to use it, and caveats. Parameter count is low, annotations present, and output schema is referenced but not necessary to explain further.

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

Parameters4/5

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

Schema covers one parameter with good description. The description adds meaning by listing return fields and special handling per country, which helps understand how the parameter affects output.

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?

The description clearly states the tool returns VAT/IVA rules for a given Latin American country, specifies the output structure, supported countries, and distinguishes from sibling calculate/suggest 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?

Explicit use cases are given (calculating LatAm invoice taxes, e-commerce checkout, tax compliance workflows). It also includes a disclaimer about not being legal/tax advice, but does not explicitly state 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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