check_pincode_serviceability

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

No annotations are provided, so the description must carry the full burden. It explains that serviceability is based on allowed states/districts but does not disclose how the parameters interact (e.g., AND vs OR logic), error handling for invalid pincodes, or side effects. The description provides basic but incomplete behavioral context.

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 with no redundancy. The purpose and use case are stated upfront. Every word adds value.

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?

With no output schema and moderate parameter count (3), the description is insufficient. It lacks details on return format, error scenarios, and how allowedStates and allowedDistricts combine (e.g., union or intersection). For a serviceability check in e-commerce, agents need more complete guidance.

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%, so baseline is 3. The description does not add meaning beyond the schema—it merely restates that the check is 'based on allowed states or districts'. No elaboration on parameter constraints or interactions.

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 verb 'checks' and the resource 'Indian PIN code serviceability', specifying it uses lists of allowed states or districts. It explicitly mentions the e-commerce checkout use case, distinguishing it from siblings like lookup_pincode.

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 provides a use case ('e-commerce checkout and shipping verification') but does not explicitly state when not to use this tool or what alternatives exist among siblings (e.g., lookup_pincode). The guidance is implied rather than explicit.

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