get_overview

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

Beyond the read-only and idempotent annotations, it discloses same-data-layer parity with the portal, rolling current/previous comparisons, comment-trigger attribution that prevents double counting, and the billing-cycle exception for usage. These are material calculation and scope behaviors that affect interpretation of the results.

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 purpose is front-loaded and the three sentences contain substantial useful information with little redundancy. The long middle sentence and nested parenthetical make the metric inventory harder to scan than a structured list would.

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?

For a read tool with one optional parameter, it supplies enough scope, comparison, and content information to support correct selection and invocation despite the absence of an output schema. It is less complete about response organization and leaves phrases such as 'what needs a human' and appointments 'with the next few' somewhat ambiguous.

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?

The schema already documents the allowed ranges, default, and equal-length previous window. The description adds the important scope rule that plan usage remains billing-cycle based regardless of range, though it does not further define window boundaries or timezone behavior.

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 opening verb and resource are specific, and mapping the result to the portal's Overview page establishes this as an account-wide aggregate. The cross-domain metric inventory also distinguishes it from narrower siblings covering flow analytics, comment-trigger statistics, or knowledge gaps.

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 clearly supports cases where the agent needs the portal Overview numbers or a broad current-versus-previous account summary. It does not explicitly say when to prefer specialized alternatives such as get_account_insights, get_flow_analytics, or get_comment_trigger_stats.

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