isw_get_billers_by_category

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

With no annotations provided, the description carries the full burden of disclosing behavioral traits. It fails to specify whether the operation is read-only, requires authentication, has rate limits, or what the output structure is. This is a severe gap for effective agent decision-making.

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 extremely concise at six words, which is efficient but results in significant under-specification. It does not earn its place as it misses critical details. A single sentence can be concise yet informative; this one is too terse to be helpful.

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 simplicity (one parameter, no output schema, no annotations), the description is severely incomplete. It omits return values, error conditions, and any operational context, making it insufficient for reliable agent invocation.

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 input schema has one parameter (categoryId) with 0% schema description coverage. The description only implies filtering by category but does not explain what categoryId represents, valid values, format, or how to obtain it. Minimal added value beyond the 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 'List VAS billers by category' clearly specifies the action (list), resource (VAS billers), and filter (by category). It distinguishes from sibling tools like isw_get_billers (likely all billers) and isw_get_biller_details (single biller specifics). However, the term 'VAS' may not be universally understood, slightly reducing clarity.

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?

No guidance on when to use this tool versus alternatives such as isw_get_billers or isw_get_biller_packages. The description does not mention prerequisites, expected input source, or scenarios where a different tool would be more appropriate.

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