get_ip_hostname

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

With no annotations provided, the description carries full burden but lacks behavioral details. It mentions the default behavior (returns current hostname if ip is None) but doesn't cover error handling, rate limits, network dependencies, or authentication needs. This is inadequate for a network tool with zero annotation coverage.

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 well-structured Args and Returns sections. Every sentence earns its place, with no redundant or verbose content.

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 low complexity (1 parameter) and the presence of an output schema (which covers return values), the description is mostly complete. However, it lacks context about network behavior or error cases, which would be helpful despite the output schema.

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 0%, so the description must compensate fully. It clearly explains the single parameter 'ip', including its purpose ('IP address to lookup') and special behavior ('If None, returns current hostname'), adding crucial meaning beyond the bare schema.

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 specific action ('Get just the hostname') and resource ('for an IP address'), distinguishing it from siblings like get_ip_info (general info) or get_ip_location (geographic data). It precisely defines the tool's narrow scope.

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 for IP-to-hostname resolution, with no explicit alternatives or exclusions mentioned. It doesn't specify when to use this versus siblings like get_ip_info (which might include hostname) or batch_lookup (for multiple IPs), leaving some ambiguity.

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