get_ip_region

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

No annotations are provided, so the description carries the full burden. It mentions the default behavior (returning current region if ip is None) but lacks details on permissions, rate limits, error handling, or what 'current region' means (e.g., based on server location or user context). This is a significant gap for a tool with potential external dependencies.

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?

The description is front-loaded with the core purpose, followed by structured Args and Returns sections. It is efficient with minimal waste, though the formatting could be slightly more polished (e.g., using bullet points).

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?

Given the tool's moderate complexity (IP lookup with a default behavior), no annotations, and an output schema (implied by Returns section), the description is adequate but incomplete. It covers the basic operation and parameters but lacks behavioral details like error cases or performance considerations, which are important for external API tools.

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?

The description adds meaningful context beyond the input schema, which has 0% description coverage. It explains that the 'ip' parameter is optional (None returns current region) and clarifies the return value as a region or state name, compensating well for the schema's lack of descriptions.

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 clearly states the tool's purpose with a specific verb ('Get') and resource ('region/state for an IP address'), distinguishing it from siblings like get_ip_city, get_ip_country, and get_ip_location. It explicitly focuses on region/state extraction rather than broader location data.

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?

The description implies usage by mentioning that if 'ip' is None, it returns the current region, suggesting a default behavior. However, it does not explicitly state when to use this tool versus alternatives like get_ip_info or get_ip_location, nor does it provide exclusions or prerequisites.

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