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

Annotations already declare the safety profile (not read-only, not idempotent, not destructive, closed-world), so the description needn't restate that. It adds genuinely useful creation-side behavior: the creator becomes Owner, the initiative starts on a weekly Friday check-in cadence, and no team members are added at creation time — they must be added later in the web app. That post-creation constraint is exactly the kind of context annotations cannot convey.

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?

The actionable verb and the domain definition are front-loaded, and the closing sentence routes the usage condition. Four sentences is slightly more than strictly needed — the check-in cadence explanation could be tightened — but each sentence contributes either domain context or default-state behavior, so there is little waste.

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 an output schema present, the description does not need to explain return values, and it covers the remaining gaps an agent would care about: ownership assignment, initial cadence, absence of team members at creation, and the explicit usage trigger. Nothing needed to call this three-parameter creation tool correctly is missing.

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% and each of the three parameters (name, goal, completion_date) carries rich schema-level documentation, so the schema does the heavy lifting. The description adds no parameter-level syntax or format detail beyond the schema, so the baseline of 3 is appropriate; its value lies in defaults, not argument semantics.

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 opens with a specific verb and resource ("Create a new initiative") and goes further by defining what an initiative is ("a named piece of work that a team casts a two-second check-in against each week"), so an agent understands the domain object, not just the operation. It is also clearly separable from siblings like genchi_list_initiatives or genchi_get_weekly_summary, which read rather than create.

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?

It gives an explicit trigger condition: "Use this when someone explicitly asks to create or set up a new initiative," which also implicitly excludes read-side siblings. There is no explicit when-not guidance (e.g., what to do if the initiative already exists, or that member management cannot happen here), but the intended context is unambiguous.

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