Describe Mixed Signal Support

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and a closed world, so the safety profile is fully covered. The description adds only the mild signal that the response includes both supported and unsupported ('can and cannot do') capabilities; it says nothing about the form, breadth, or limits of that answer.

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 short sentence with the capability scope front-loaded and zero filler. Nothing to trim and nothing buried.

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, read-only capability-query tool with no output schema, the description adequately conveys that the return is a supported/unsupported capability summary. It could say slightly more about what domains are covered (e.g. netlist, simulation, or schematic aspects of mixed-signal), but nothing an agent needs to invoke it 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 and the schema is empty, so there is nothing for the description to disambiguate. Baseline 4 applies.

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 informational verb ('State') and a specific resource (mixed-signal authoring capability of LTspice), including the scope 'can and cannot do'. It is distinguishable from the many other describe_*_support siblings only by its topic noun, not by any explicit contrast, so it falls just short of a 5.

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 call this versus describe_server_capabilities, describe_schematic_edit_support, describe_protocol_support, or the other capability-query siblings. The intent is inferable (check capability before authoring mixed-signal content), but nothing states a trigger, prerequisite, or exclusion.

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