split_add_prefetch

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. The only non-obvious behavior disclosed is that this is a 'Pro feature,' which hints at gating or entitlement requirements. The description does not state whether the tool modifies existing files, writes new files, requires an api_key, or what side effects occur.

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 short sentence with no filler words, and the 'Pro feature' qualifier is placed at the end without distracting from the main verb. It is concise, though the conciseness comes at the cost of necessary detail.

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 tool with two parameters, no output schema, and no annotations, the description should explain what prefetch strategies are, whether it modifies a split config, and how api_key factors in. The current description leaves critical invocation details and expected outputs undocumented, making it insufficient for an agent to use correctly and confidently.

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 only 50%; directory is documented in the schema, but api_key has no description. The tool description adds nothing about either parameter, especially the purpose of api_key or how it relates to the 'Pro feature' gate. The agent cannot determine whether api_key is needed for successful invocation.

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 action ('Generate prefetch strategies') and resource, so it is not a tautology. However, it does not explain what 'prefetch strategies' means in context, where they are added, or how this relates to the sibling split_analyze_chunks and split_generate_config tools. The '(Pro feature)' hint adds some signal but the core purpose remains vague.

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?

There is no guidance on when to use this tool instead of split_generate_config, split_analyze_chunks, or other related generation tools. The name implies it should be used after split config generation, but this is never stated explicitly, leaving the agent to infer the intended workflow.

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