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

Annotations already cover safety (readOnly, idempotent, non-destructive, closed-world), so the bar is lower. The description adds genuinely useful behavior beyond them: the dataset size (742 verified places), that results are grouped by category, and that each result carries a barangay count and a dumaguete.uk link — effectively describing the return shape absent an output schema. It does not mention pagination or result caps, which for a 742-item list is the one meaningful omission.

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 sentences, zero filler, with the content scope front-loaded and the routing pointer second. Every clause earns its place.

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 listing tool with no output schema, the description adequately conveys what comes back (places, grouped by category, with counts and links). The only substantive hole is the undocumented 'lang' parameter, which an agent must guess at.

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 50%: 'category' is documented in the schema with its allowed ids, but 'lang' (a 23-value enum) has no description anywhere. The prose only implies category filtering ('by category') and says nothing about language behavior, so it neither compensates for the gap nor adds meaning beyond the schema. Baseline 3 fits.

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+resource: it returns the 742 verified places in Dumaguete by category, along with barangay counts and links. That is far more specific than the vague sibling names, but it does not explicitly contrast itself with sibling tools like get_dumaguete_topic or search_dumaguete_answers; the only differentiation offered is against a non-sibling external API for single-place lookups.

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?

It gives a clear condition for when NOT to use it — 'For one individual place, use the source API at dumaguete.uk/v1/places' — which routes the agent away for single-record fetches. It stops short of stating when to prefer this over sibling aggregate tools such as get_dumaguete_facts or get_dumaguete_topic, so the guidance is one-sided but explicit.

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