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

Annotations declare readOnlyHint=false and idempotentHint=false, so the agent knows this mutates state, but the description adds nothing beyond that: it does not state that creation requires prior user approval, whether duplicate projects are possible, or what side effects occur. For a non-idempotent write tool with no output schema, the description carries most of the disclosure burden and fails to.

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?

A single front-loaded sentence with the verb first and zero padding. It is tight, though the brevity contributes to the under-specification seen in other dimensions.

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?

An 8-parameter (5 required), non-idempotent creation tool with 13% schema coverage and no output schema needs far more than one sentence. The missing pieces — the approval precondition, required vs optional subject fields, and the tributeMode enum's linkage to the tribute category — are exactly what an agent would need.

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 only 13% (just approvedCreation), and the description compensates almost nothing — it merely restates the category enum values. The required subjectName, subjectRelationship, and subjectPronouns and the optional tributeMode/subjectBirthDecade/subjectNote are given no meaning, format, or relationship 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 states a specific verb ("Create") and resource ("project") and enumerates the valid project categories (memoir, family legacy, celebration, tribute, life-series), matching the category enum. However, it never distinguishes a "life project" from a sibling like create_story, so an agent cannot tell from the text alone which construct it needs.

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?

There is no when-to-use guidance, no mention of the required user-approval gate (approvedCreation must be true), and no routing to alternatives such as create_story. The agent is left to infer usage entirely from the name.

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