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. The description's one extra behavioral fact is the cost — '0.3 points per call' — which is genuinely useful billing context and would otherwise be invisible; it stops there, saying nothing about return shape or rate limits.

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 fragment that front-loads the resource and ends with the cost note; nothing is padded. It is a run-on list rather than a well-formed sentence, but it is efficient.

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?

There is no output schema and no annotations gap, so the description partially compensates by listing returned sections. But it omits the routing information (json vs the plural siblings) and parameter sourcing that an agent needs to call it correctly, leaving it only minimally complete.

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% with both params ('slug' = Asset slug, 'sector' = Sector slug) documented, so the baseline is 3. The description adds no meaning beyond the schema — it never explains the sector/slug relationship or how to obtain the slugs.

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 identifies the resource (a single asset) and enumerates its return contents (links, trials, readiness checklist, events, calendar, owning company), which helps distinguish it from the plural sibling sectors_assets. However, it never states an action verb — it's a noun fragment restating the title 'One asset' — so an agent must infer that this is a retrieval call.

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?

No guidance on when to use this tool versus alternatives. The obvious candidate, sectors_assets, is not mentioned, nor is sectors_stock or sectors_event, and no preconditions (or required level of the sector/slug hierarchy) are given.

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