set_balance

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

With no annotations, the description carries full burden. It says 'Set the wallet balance' implying a write operation, but fails to disclose side effects (e.g., overwrites previous balance), required permissions, or whether the operation is reversible. The behavioral profile is minimal.

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, concise and front-loaded with the verb and object. Every word is necessary, but it could include additional usage guidance without becoming verbose.

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?

Given the simplicity (one parameter, no annotations), the description barely covers what the tool does. It lacks details on return values (though output schema exists), error conditions, and prerequisites. It is minimally viable but has clear gaps.

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 coverage is 0%, so the description adds value by indicating that 'amount' is the new balance value denominated in Rs. However, it does not specify constraints like non-negativity or numeric format. For a single parameter, this is adequate but not thorough.

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 ('Set') and the resource ('the wallet balance'), and specifies the unit ('in Rs.'). It distinctly differentiates from sibling tools like get_balance (read) and add_expense (adds expenses), as there is no other write-to-balance tool.

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?

No guidance is provided on when to use this tool versus alternatives. It does not mention that set_balance overwrites the balance, nor does it contrast with get_balance (reading) or add_expense (adding expenses). The agent must infer usage from context.

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