List Month Transactions

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

The annotation already declares readOnlyHint=true, so the agent knows this is a safe read operation. The description adds useful context about being a single API call, which hints at efficiency/rate limiting considerations. However, it doesn't describe pagination behavior, return format, or other behavioral traits beyond what annotations provide.

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 extremely concise with just two parts: the API call count and the core functionality. Every element earns its place, and it's front-loaded with the most important information (what the tool does).

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 good schema coverage but no output schema, the description is minimally adequate. It states the core purpose but lacks important context about when to use it versus sibling tools, what the return format looks like, or any limitations beyond the single API call mention.

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?

Schema description coverage is 100%, so all parameters are documented in the schema. The description doesn't add any parameter-specific information beyond what's already in the schema descriptions. The baseline of 3 is appropriate when the schema does the heavy lifting.

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 action ('List transactions') and scope ('for a specific month'), which is a specific verb+resource combination. However, it doesn't distinguish this tool from sibling tools like 'list_transactions' or 'list_account_transactions', which likely have overlapping functionality.

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 no guidance on when to use this tool versus alternatives like 'list_transactions' or 'list_account_transactions'. It mentions '[1 API call]' which hints at efficiency but doesn't explain when this specific month-focused tool is preferred over other listing tools.

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