simulate_investment

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions 'deterministic financial calculations' but does not disclose what the output format is (e.g., future value, schedule), any underlying assumptions (e.g., compounding frequency), or limitations. This is a significant gap for a simulation tool.

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 that is appropriately concise and front-loaded with the verb 'Simulate'. It avoids repetition of schema details and contains no unnecessary 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?

Despite a well-documented schema, the description fails to provide essential context about the tool's output or behavior. There is no output schema, and the description does not mention what the simulation returns (e.g., final corpus, year-wise breakdown) or any edge cases. For a non-trivial financial tool, this is incomplete.

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 input schema provides complete descriptions for all parameters (100% coverage), so the baseline is 3. The description adds no additional meaning beyond referencing 'SIP or lump-sum', which maps to monthlySIP and initialInvestment already documented in the schema. It does not enrich parameter understanding.

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 function with a specific verb ('Simulate') and resource ('the growth of SIP or lump-sum investments'). It distinguishes itself from siblings like analyze_portfolio and assess_risk by focusing on simulation rather than analysis or risk assessment.

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 usage for simulating investment growth but does not explicitly state when to use it versus alternatives or when not to use it. No exclusions or comparisons to sibling tools are provided, leaving usage guidance at an implied level.

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