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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint, so the safety profile is covered. The description adds useful structure about the result (edited curation of dailies, section grouping, overview) and the default-to-latest behavior, but says nothing about report size, date coverage limits, or what happens for a month with no data.

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 tightly written sentences, front-loaded with the resource and its contents before moving to usage. No filler or redundant phrasing.

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 one-optional-parameter read tool with full annotation coverage and no output schema, the description does everything needed: it explains the curation model, the section/overview structure of the result, and the default behavior when month is omitted.

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 coverage is 100% and the single `month` parameter is fully documented in the schema, including format and the omit-for-latest rule. The description's 'omit month for the latest' largely restates the schema rather than adding new meaning, so baseline 3 is appropriate.

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 e/acc's edited monthly report') and specifies its contents: the month's most important events drawn from dailies, grouped by section, plus an overview. The aggregation level implicitly separates it from the daily/weekly siblings, though no sibling is named directly.

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 context: 'Use this for what happened this month or in a given month; omit month for the latest.' That resolves the main selection ambiguity (current vs. historical). It stops short of naming alternatives such as eacc_get_daily or eacc_get_weekly for guidance on when not to use this tool.

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