registry_fields

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

No annotations are provided, so the description carries full burden. It only states 'Search', implying a read-only operation, but does not explicitly confirm no side effects or describe behavior like pagination, result sorting, or limitations. The presence of a 'limit' parameter suggests truncation, but this is not explained.

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 a single, focused sentence with no redundancy. It is concise but could benefit from slight expansion to cover key details without becoming verbose.

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 two parameters, no schema descriptions, and no annotations, the description is insufficient for the tool's complexity. The output schema exists but the description does not reference it or clarify return values. The agent lacks critical information to invoke the tool correctly.

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%, and the tool description adds no parameter details. The 'search' and 'limit' parameters are not explained; their types and defaults are given in the schema but their meaning is absent. This leaves the agent without necessary semantic context to use them effectively.

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?

Description clearly states the tool searches the local Wireshark display field registry. The verb 'Search' and resource 'display field registry' are specific. However, it does not explicitly distinguish from the sibling 'registry_field_detail', which might retrieve details for a single field. The purpose is clear but not fully differentiated.

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 like 'registry_field_detail'. The description does not provide context about scope or prerequisites. An AI agent would have no basis to choose this over other registry tools.

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