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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world, so the safety profile is covered. The description adds genuinely useful behavior beyond them: results are ordered newest first, results are paginated, and each item carries an AI summary with before/after pricing detail — all relevant to how an agent should consume the output.

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 front-loaded sentence with the verb and resource first, then ordering, pagination, and payload shape. Every clause carries information an agent would otherwise have to discover, and there is no filler.

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 annotations covering safety, a 100%-documented schema, and an output schema that carries return-value detail, the description is nearly sufficient. The only real gap is the undefined window behind 'recently' — how far back the list reaches and whether older changes are retrievable — which matters for an intelligence-monitoring tool.

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%, so limit, offset, and the significance enum are fully documented structurally; the baseline is 3. The description reinforces ordering and pagination semantics but adds nothing about the significance filter or how it interacts with the detected changes.

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 ('List recently detected pricing changes') and scopes it to 'competitors you track,' which naturally separates it from siblings like outmano_list_competitor_roadmap_changes or outmano_list_competitor_blog_posts. It never names an alternative explicitly, so a 5 isn't warranted, but the resource is specific enough to route correctly.

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?

Usage is only implied: the phrase 'recently detected' suggests a monitoring/browsing workflow, but there is no statement of when to choose this over the roadmap-changes or mentions tools, nor any exclusion criteria. Nothing misleading, but the agent must infer the decision rule.

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