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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so safety and idempotency are covered. The description adds value by enumerating the per-event payload (short code, city, country, geolocation, timestamp), which partly compensates for the absent output schema. It says nothing about ordering, event volume, or whether results are capped/paginated beyond the limit ceiling.

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, front-loaded with the action and scope before the payload detail. Nothing is redundant, though "Useful for real-time monitoring" is the softest sentence and borders on 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?

For a simple read-only tool with two optional, fully documented parameters and rich annotations, the definition covers purpose, scope, and returned fields adequately. The remaining gaps — sort order, whether the window is measured from now, and relation to the stats siblings — are minor but real.

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%, and both parameters (limit, since_minutes) carry defaults, min, and max in the schema itself. The description adds no meaning beyond that — it never mentions the time window or row cap, leaving the schema to do all the work. 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 states a specific verb and resource ("Get recent click events") and scopes it ("across all of your links"), which implicitly separates it from per-link siblings like get_link_stats. It stops short of naming any alternative explicitly, so an agent must infer the boundary from the phrase "across all of your links."

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?

"Useful for real-time monitoring" implies the intended scenario but gives no explicit when-to-use or when-not guidance, and never mentions get_link_stats, get_aggregate_stats, or export_link_stats as the alternatives for historical or per-link analysis. Usage is inferable but not directed.

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