get_current_year_month

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

No annotations are provided, so the description fully carries the burden. It accurately describes the behavior: returning a string in YYYYMM format. There are no hidden side effects, permissions, or safety concerns to disclose for this simple read-only operation.

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 concise at ~60 words, with the main purpose stated first. Every sentence adds value: purpose, usage guideline, and return format. No redundancy or wasted words.

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 simple tool with no parameters and an output schema, the description is complete. It explains the return format and when to use it. No additional information is needed for an agent to effectively invoke and understand the tool.

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?

There are zero parameters, so baseline is 4. The description adds value beyond the empty schema by explaining the output format and contextual usage, justifying a score of 5.

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 specifies the verb 'Return', the resource 'current year and month', and the output format 'YYYYMM'. It explicitly states the tool's purpose as a utility for trade/rent tools, distinguishing it from sibling calculation and data retrieval tools.

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 explicitly states when to use this tool: 'Call this tool when the user asks about current or recent transactions without specifying a year_month.' This provides clear guidance and implies the alternative (use year_month from user input) without needing explicit sibling differentiation.

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