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

Annotations already declare readOnlyHint=true and idempotentHint=true, so the safety profile is covered. The description adds that output covers the user's team specifically and enumerates the summary sections, which is useful context, but says nothing about auth requirements, caching, or freshness beyond 'latest'.

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?

Front-loaded with the core action in the first sentence, followed by content enumeration and a short paging hint. Every sentence carries information, though the content list is somewhat verbose given an output schema already exists.

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 zero-required-param, read-only retrieval tool with a full output schema, the description covers purpose, scope, and the paging parameter adequately. The only shortfall is the absence of sibling differentiation among the several summary/insight tools.

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 the single parameter already documents the 0 = most recent / max 4 semantics. The description only restates that weeks_ago fetches older summaries, adding no syntax or constraint detail beyond the schema, so baseline 3 applies.

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 and resource ('Get the latest weekly changelog summary') scoped to the authenticated user's team, which tells an agent exactly what it returns. It does not distinguish itself from similarly named siblings such as get-team-insight-summary-tool or get-my-insights-tool, leaving potential overlap ambiguous.

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?

The only usage sentence ('Use weeks_ago to retrieve older summaries') describes how to page backwards, not when this tool is the right choice versus alternatives. No when-not conditions or sibling routing are provided.

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