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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is covered and the burden is lower. The description adds the editorial-vs-complete distinction of the result set, which is genuine behavioral context, but says nothing about freshness, whether editions are pre-generated, or what a caller gets when data is missing beyond what the lang schema entry already states.

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?

Three short sentences: purpose, default preference, exclusions. The scope statement is front-loaded and no sentence is redundant with the title or schema. Nothing could be cut without losing routing information.

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 no output schema and five optional parameters, the description should carry more weight on what comes back (fields, ordering, pagination versus the 30-item cap). It covers selection scope and exclusions well but leaves the return shape entirely undefined, which is the main gap for a retrieval tool of this complexity.

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 schema descriptions are unusually rich (enum meanings, defaults, edition_unavailable behavior, limit bounds), so the schema carries the parameter explanation. The description's one contribution is advising the selected default over all, which is a policy hint rather than new meaning for window, limit, or category. 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?

The description opens with a specific verb and resource ("Get the latest e/acc items") and scopes the result set to a 24-hour or 7-day briefing, so the agent knows what it returns. It partially differentiates from siblings by excluding named-topic search (eacc_search) and multi-source event context. However, it never addresses its overlap with eacc_get_daily and eacc_get_weekly, which an agent selecting among these will immediately wonder about.

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 default preference ("Prefer selected mode unless the user explicitly asks for every public item") and two explicit exclusions with the alternative use case named. What it lacks is naming the sibling tools to route to instead of only describing the excluded capability, leaving the agent to guess that eacc_search is the target.

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