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

Annotations already declare readOnly, idempotent, and closed-world, so safety is covered. The description adds genuinely new behavioral facts: the search corpus is limited to *public* changelogs and the result set is slugs rather than full changelog content. Pagination/truncation behavior is not mentioned, which keeps it from a 5.

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?

Two short sentences, zero filler, with the search scope front-loaded and the output/usage contract immediately after. Nothing could be cut without losing 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?

For a 2-parameter read tool with no output schema, the description supplies the essential missing piece: what comes back (slugs) and why it matters. A minor gap remains around what a match looks like or what happens on no-match, but an agent can call this confidently.

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 the query format and limit bounds with default are already documented. The description's enumeration of lookup keys restates the schema without adding new syntax or normalization rules, so the baseline of 3 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?

States a specific verb and resource (find a public LogPulse changelog) plus the four lookup keys it accepts. The second sentence positions it as the discovery entry point whose output feeds the other tools, which separates it from get_changelog/get_release without naming them.

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?

"Returns slugs to use with the other tools" makes the workflow role explicit: call this first when you don't already have a slug. It stops short of explicitly stating when to skip it (e.g. 'if you already have a slug, use get_changelog'), so it is clear context without full exclusions.

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