Excel Finance MCP

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

With no annotations provided, the description carries full burden for behavioral disclosure. It states the tool 'generates' projections, implying a read-only calculation, but doesn't specify whether it creates persistent data, requires specific permissions, has rate limits, or describes output format. This leaves significant behavioral gaps for a tool with complex nested parameters.

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, efficient sentence with zero wasted words. It's appropriately front-loaded with the core action and immediately specifies the key differentiator (different income scenarios). Every word earns its place.

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 tool with 2 parameters (one nested), no annotations, no output schema, and 50% schema coverage, the description is insufficient. It doesn't explain what the projections contain, how scenarios should be structured, what 'entityId' represents, or behavioral aspects like permissions or data persistence. The conciseness comes at the cost of 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 50% (only 'scenarios' has a description). The tool description mentions 'different income scenarios' which aligns with the 'scenarios' parameter, adding some semantic context. However, it doesn't explain the 'entityId' parameter or provide details about scenario structure beyond what's minimally implied, resulting in adequate but incomplete parameter guidance.

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 'generate' and resource 'tax projections under different income scenarios', making the purpose specific and understandable. It doesn't explicitly distinguish from sibling tools like 'business_tax_summary' or 'calculate_federal_income_tax', but the focus on projections and scenarios provides reasonable differentiation.

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 like 'analytics_scenario_comparison', 'tax_planning_strategies', or other tax calculation tools. The description implies scenario-based tax projection but offers no explicit usage context, prerequisites, or exclusions.

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