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

No annotations provided. Description discloses read-only behavior and free pricing, but does not mention error handling, rate limits, or data freshness. Minimal transparency beyond what is stated.

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?

Single sentence efficiently conveys purpose, input, source, and attributes. No unnecessary words.

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 tool with 2 parameters and no output schema, description names the output fields (IANA timezone, abbreviation, offset). Lacks return format or error details, but adequate for basic use.

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?

Input schema covers both parameters with descriptions (100% coverage). Description adds context about the API source but does not enhance parameter semantics beyond what schema provides.

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?

Clearly states 'Resolve the IANA timezone, abbreviation and current UTC offset for a lat/lon coordinate', specifying the action and resource. Distinct from sibling tools like geo_intel_distance or geo_intel_geocode.

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?

Indicates it is 'Read-only' and 'free', but does not provide explicit guidance on when to use or alternative tools. Implies usage context but lacks exclusion criteria.

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