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

Annotations already declare this as a non-readonly, non-idempotent, non-destructive, closed-world write. The description adds that it returns the document plus a link for opening/editing. It does not warn that repeated calls create separate artifacts (relevant given idempotentHint=false), but the annotation set carries the safety profile, so 3 is appropriate.

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 sentences, zero padding, front-loading the usage trigger before the sibling routing. Every clause 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?

With annotations, a full output schema, and 100% parameter coverage, the description only needs to supply the trigger, the alternative routing, and a return summary — all present. Minor gap: no note on what the 'brief' argument should contain at minimum or whether repeated invocations duplicate the artifact.

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% with both parameters documented ('brief' and optional 'title'), so the schema does the heavy lifting. The description adds no syntax, format, or length guidance for 'brief' beyond what the schema states; baseline 3 applies.

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 and resource ('create a document') scoped to the user's Xenition workspace, and immediately differentiates from the two nearest siblings (create_slides, find_forms). An agent can tell what this produces without opening any 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?

Gives an explicit trigger ('when the user asks for a written piece — a report, article, letter, brief, essay or plan') and routes excluded cases to alternatives: create_slides for slides, find_forms for fill-in templates. When-not and alternatives are both covered.

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