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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered. The description adds genuine value beyond that by disclosing the returned counts (masjids, halal places), but says nothing about result ordering, result limits, or fuzzy vs exact matching behavior.

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 dense sentence with no filler; the resource is front-loaded and the returned counts are appended without redundancy. 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 one-parameter lookup with no output schema, the definition covers what is searched and what comes back (counts), which is close to what an agent needs. It stops short of explaining whether results carry identifiers usable by sibling tools or how many matches are returned, minor gaps at this complexity level.

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 the single 'query' parameter is documented with concrete examples ("dallas tx", "london ontario"). The description adds only that matching spans cities, counties and metros, which complements the schema but does not add syntax, casing or matching-rule details.

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 names the resource precisely (cities, counties and metros on Qadir) and the operation (matching a name), plus the payload each result carries (masjid and halal place counts). It is a noun phrase without an explicit verb, and it does not distinguish itself from any sibling, but an agent can still tell it resolves place names rather than returning masjids or food directly.

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: as a name-matching lookup whose results include counts, an agent can infer it is a discovery/entry point, likely used to resolve a place before calling masjids or halal_food. There is no explicit 'use this when', no statement of when not to use it, and no mention of the sibling tools.

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