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

Annotations already declare readOnlyHint/idempotentHint/non-destructive, so 'without saving or modifying it' largely restates them. The description does add workflow context (validation precedes feasibility and scheduling) that annotations cannot express, which is genuine added value.

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?

Four short sentences, front-loaded with purpose, then usage ordering, then the input-shape caveat. No filler and every sentence carries actionable 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?

An output schema exists, so return values need not be documented, and the description covers purpose, precondition, sequencing and envelope shape. It is slightly thin on the semantics of the optional sections, though the input schema's own description partially covers the required vs. optional split.

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?

Per-parameter schema coverage is 0% across 8 params with nested objects, so the description must compensate - and it only partly does, clarifying the top-level payload shape and pointing to rotase_examples as a template. It says nothing about store, employees, schedules, preferences, availability, schemaVersion or monthlyTargets. The claim that the input is 'the project object itself, not a wrapper with an additional "project" property' also sits awkwardly against a schema where 'project' is a required top-level key, which risks confusing an agent about the correct envelope.

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?

Names a specific verb+resource ('Validate a complete Rotase project payload') and immediately scopes it as non-mutating ('without saving or modifying it'). It is readily distinguishable from siblings like rotase_check_feasibility, rotase_generate_schedule and rotase_examples, which are named explicitly.

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 clear ordering guidance ('Call this before feasibility checks or schedule generation') and names an alternative for payload discovery ('Use rotase_examples first if the payload shape is unknown'). It lacks an explicit when-not/negative case, so it falls short of the top band.

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