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

Annotations already declare readOnlyHint, idempotentHint and openWorldHint=false, so safety is covered. The description adds genuinely useful behavior context beyond them: the schedule is deterministic, conflict-aware, Houston-local (timezone scoping), and deliberately never invents travel time. It still omits how buffers/limits are applied or what happens when no conflict-free plan exists.

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 short sentences with no filler, leading with the core action and following with the key constraint. Well front-loaded.

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 needn't be described, and the what/where of the planner is clear. However, with 10 params at 10% coverage and no usage guidance against plan_conference_week, an agent cannot reliably construct a call from this description alone.

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?

With 10 parameters and only 10% schema description coverage, the description carries nearly the full burden and largely fails: bufferMinutes, maxItems, start/end, networkingLimit and foodQuery are never explained. Only the source categories (guide events, sessions, meals, networking, companies) are loosely hinted at, which doesn't disambiguate the query/foodQuery/networkingQuery trio.

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 (build) and resource (a deterministic conflict-aware day schedule) sourced from guide events, official sessions, meals, networking and company options. The title 'Plan an AfroTech day' reinforces scope, but the description never names its closest sibling plan_conference_week, so an agent must infer the difference by scope alone.

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 explicit when-to-use statement, no prerequisites, and no reference to the obvious alternative plan_conference_week for multi-day planning. The agent gets a purpose but no routing guidance.

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