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

Annotations show destructiveHint=false and readOnlyHint=false (which means likely a normal write operation). The description doesn't add behavioral context - no mention of whether the deck is saved, returned, or rendered, or any side effects. The phrase 'Generate' implies creation, but without elaboration on the output behavior, the agent may be uncertain what happens to the generated deck.

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?

One concise sentence that front-loads the core action. The phrase 'from templates and data' is slightly vague but not wasted. Efficient use of limited space.

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?

Missing critical context: given 10 sibling tools, the agent needs to know how this differs from fill_template (which likely fills a single template) and save_deck (which likely saves a deck). No mention of what the output is used for, whether it creates a new deck or modifies an existing one, or any prerequisites. The schema describes the input shape but not the tool's purpose within the broader workflow.

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 100% - the schema documents the single 'slides' parameter with its nested structure and template options. The description doesn't add any parameter-level detail beyond what the schema already provides, which is acceptable given the coverage.

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 states a clear verb+resource ('Generate a presentation deck') but lacks specificity about what 'from templates and data' means in practice - it doesn't distinguish from sibling tools like fill_template or save_deck. The resource is ambiguous ('deck' could mean any presentation).

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?

Implied usage - generating a deck from templates and data - but no explicit context on when to use this instead of fill_template, preview_template, or save_deck. No exclusions or alternatives mentioned despite having 10 siblings, which is a significant gap.

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