query_history_assistant_warm

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

Annotations already declare readOnlyHint=true, so the safety profile is covered. The description adds useful behavioral context with '(no model call)', telling the agent this preloads a process without incurring inference, but it says nothing about latency, cost, or what the warm-up actually achieves. Modest value beyond annotations.

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?

A single front-loaded sentence with the core action first and the key caveat (no model call) parenthesized. Zero wasted words.

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 parameterless, read-only warm-up call with no output schema, the description is close to sufficient: it says what it does and that no model call happens. It could say a bit more about expected effect or whether it is safe to call repeatedly, but nothing critical is missing.

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 takes zero parameters, so the baseline is 4 per the rubric; there is nothing to document in the schema and the description correctly implies no input is required.

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?

States a specific action (start/preload the screen's Claude process) and clarifies it performs no model call, which distinguishes it from the actual assistant siblings like query_history_assistant and query_history_ask. It does not explicitly differentiate itself from the other _warm variants (sql_editor_assistant_warm, notebook_assistant_warm), but the resource and action are clear.

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 'ahead of the first question' implies when to invoke it (before asking), giving usable context, but it does not state that the tool is optional, when NOT to use it, or how it relates to the other _warm tools. Usage is implied rather than spelled out.

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