SimpleLocalize MCP Server

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

With no annotations provided, the description carries the full burden. It discloses the return format ('key and namespace only') and that it's a read operation ('fetch'), but doesn't mention pagination behavior, rate limits, authentication requirements, or what happens with large datasets. It adds some behavioral context but leaves important operational details unspecified.

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

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

The description is perfectly concise with three sentences: purpose statement, parameter information, and usage guidance. Every sentence earns its place with no redundancy or unnecessary elaboration.

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

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

For a read-only tool with no parameters and no output schema, the description provides adequate basic information but lacks details about return format structure, pagination, or error conditions. It's complete enough for basic understanding but leaves operational questions unanswered.

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

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

The description explicitly states 'No parameters required' and the input schema has 0 parameters with 100% coverage. This clear declaration adds value beyond the empty schema by confirming the tool's parameterless nature, though it doesn't need to explain any parameters.

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

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

The description clearly states the tool's purpose with specific verb ('return') and resource ('all translation keys (key and namespace only) in your SimpleLocalize project'). It distinguishes this from sibling tools like 'get_translation_key_details' (single key details) and 'get_translations' (actual translation values).

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

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

The description provides clear usage context ('quickly fetch all keys for reference or validation'), but doesn't explicitly state when NOT to use it or name specific alternatives. It implies this is for bulk key listing rather than detailed inspection, but lacks explicit exclusions.

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