Get margin requirements

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

With no annotations, the description only indicates a read operation ('Get'), which is standard. It does not disclose any additional behavioral details such as required permissions, rate limits, or potential side effects, though none are expected for a simple query.

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 a single sentence of 9 words, efficiently conveying the tool's purpose and scope without any redundant information.

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?

While the tool is simple with one parameter and no output schema, the description lacks any detail about the return format (e.g., structure of the report) or additional context like whether it reflects real-time data or historical. A brief mention of output would improve completeness.

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% for the single parameter 'account_number', described as 'The account number'. The tool description adds no extra meaning beyond what the schema already provides, so baseline score applies.

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 verb 'Get' and the resource 'margin/buying-power requirements report for an account', distinguishing it from sibling tools like get_accounts or get_balances which cover different financial data.

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 implies the tool is for obtaining margin requirements, but does not provide explicit guidance on when to use it over alternatives (e.g., get_balances for cash balances), nor does it state when not to use it.

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