catalog_index

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It reveals the incremental nature and the lack of render compatibility declaration, which are key behavioral traits. However, it omits details about side effects, persistence, errors, or return behavior, so it is only partially transparent.

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, tightly worded sentence that front-loads the core action and its distinguishing constraint. Every word earns its place with no filler or redundancy.

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?

For a zero-parameter tool with no output schema, the description provides sufficient context for an agent to understand the purpose and the primary constraint. It could elaborate on the meaning of 'record' (e.g., persistence, scope) but given the simplicity, it is reasonably complete.

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 tool has zero parameters and the schema is empty (100% coverage), so there are no parameters to explain. The baseline for zero-parameter tools is 4, and the description adds no irrelevant parameter information, so this score is appropriate.

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 states a specific verb ('record') and resource ('local plugin/preset metadata') with a distinguishing qualifier ('incrementally' and 'without declaring render compatibility'). It is clear about the core action, though it doesn't explicitly name sibling tools for contrast. The unique aspect helps differentiate it from other catalog tools.

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 phrase 'incrementally record' and 'without declaring render compatibility' implies when it is appropriate (for incremental metadata capture) and what it avoids (render compatibility declaration). However, it does not explicitly state when not to use it or mention alternatives, leaving the agent to infer context.

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