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

Annotations already declare it is a non-readonly, non-destructive, non-idempotent, closed-world creation. The description adds that it returns slides as an inline preview plus an edit link, but since an output schema exists return format is partly redundant, and it says nothing about cost, latency, or that repeated calls create duplicate decks.

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?

Two tight sentences: the core action is front-loaded, followed by the return behavior and trigger conditions. No filler or repetition.

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?

With annotations covering the safety profile and an output schema covering returns, the description supplies what an agent needs to select and call it. Minor gaps remain around limits (e.g., deck size) and duplication behavior on repeated calls.

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 100%, so the baseline is 3. The phrase 'from a brief or topic' loosely echoes the required 'brief' parameter, but adds no format, length, or example guidance beyond what the schema already documents.

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?

States a specific verb+resource ('Create a ... presentation deck') plus scope ('in the user's Xenition workspace from a brief or topic'), which cleanly separates it from siblings like create_document, create_spreadsheet, or create_diagram. An agent can identify it without opening the schema.

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 final sentence gives explicit trigger conditions ('when the user asks for slides, a deck, a presentation, or a pitch deck'), which is strong routing guidance. It does not name alternatives or state when-not-to-use, so it stops short of a 5.

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