Cross-Platform PowerPoint MCP Server

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

With no annotations provided, the description carries full burden but offers minimal behavioral context. It states the action is an 'Add' (implying mutation) but doesn't cover permissions needed, whether changes are saved automatically, error conditions, or rate limits. The return statement is vague ('Information about the new slide') without detailing format or content.

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 well-structured with clear sections (purpose, Args, Returns) and uses bullet points for layout types efficiently. It's appropriately sized, though the 'etc...' in layout types is slightly vague. Every sentence adds value, with no 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?

Given the tool has an output schema (which should cover return values), the description's vague return statement is acceptable. However, for a mutation tool with no annotations and 2 parameters, it lacks details on behavioral aspects like side effects or error handling. The parameter semantics are well-covered, but overall completeness is moderate due to missing usage and transparency elements.

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 description adds significant value beyond the input schema, which has 0% description coverage. It explains 'presentation_id' as 'ID of the presentation' and provides detailed semantics for 'layout_type' with default values and layout mappings (e.g., '1: ppLayoutTitle (title slide)'), which are not in the schema. This fully compensates for the schema's lack of descriptions.

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 specific action ('Add a new slide') and resource ('to the presentation'), distinguishing it from siblings like 'create_presentation' (creates entire presentation) or 'set_slide_title' (modifies existing slide). The verb+resource combination is precise and unambiguous.

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 about when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., whether the presentation must be open/loaded), exclusions, or comparisons to similar tools like 'create_presentation' for starting from scratch or 'get_slides' for viewing existing slides.

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