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chrispickford

fifa-public-api-mcp

list_countries

Retrieve a list of FIFA countries and member associations with their unique identifiers. Optionally specify language for name selection.

Instructions

List FIFA countries and member associations (reference data), each with its idCountry.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
rawNoReturn FIFA's untouched payload instead of the trimmed shape
languageNoLanguage code passed through to the API and used for name selectionen
Behavior2/5

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

No annotations provided, so description carries full burden. It only states the action and output fields, lacking details on permissions, rate limits, or side effects. 'Reference data' hints at idempotency but is insufficient.

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

Conciseness4/5

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

Single sentence with no superfluous words. Efficient, but could benefit from a brief expansion on the tool's purpose relative to siblings.

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

Completeness3/5

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

For a simple list tool with no output schema and minimal annotations, the description is adequate but not fully complete. Lacks details on return structure beyond idCountry, which may require additional context for agents.

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 coverage is 100% with descriptions for both parameters. The description adds no extra meaning beyond the schema, meeting the baseline for high coverage.

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?

Description clearly states verb 'List' and resource 'FIFA countries and member associations', with a note on reference data. It is distinct from sibling tools like list_confederations or list_seasons.

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

Usage Guidelines2/5

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

No explicit when-to-use or when-not-to-use guidance. The phrase 'reference data' weakly implies static nature, but no alternatives or exclusions are mentioned.

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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