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

Annotations already declare readOnlyHint=true, idempotentHint=true, openWorldHint=true and destructiveHint=false, so the safety profile is covered. The description's one genuine addition is the per-call point cost (0.2), which is real economic context not present in annotations. It still says nothing about pagination, result size, or error behavior for bad slugs.

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?

A single compact sentence with the payload inventory front-loaded and the cost appended last. It is efficiently sized, though the wording is a near-verbatim copy of the title, which costs it a point for redundancy.

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, the description earns credit for enumerating the returned sections (summary, facts, calendar item, readiness, related events), which is what an agent needs most here. However, for a two-parameter lookup tool it gives no routing guidance relative to the many sibling event tools, leaving selection 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?

Schema coverage is 100% and both required parameters (sector, slug) are documented in the schema, including the note that slug accepts a permalink slug or event id. The description adds no further meaning, so the baseline 3 for fully-covered schemas 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?

The description names the resource and enumerates its payload parts (summary, facts, calendar item, readiness) plus related events, so an agent knows roughly what comes back. But there is no operative verb and no differentiation from close siblings like get_sector_events or get_pulse_events, which fetch overlapping data. Purpose is discernible but not sharp.

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 when-to-use guidance, no prerequisites, and no naming of alternatives such as get_sector_events (list) or get_sector_calendar. The only indirect signal is the '0.2 points per call' cost, which hints at preferring cheaper bulk endpoints but never says so explicitly.

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