Commodore 64 Ultimate Computer MCP Server

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. 'Enable a drive' suggests a state-changing operation, but it doesn't specify effects (e.g., powers on drive, makes it accessible), permissions needed, side effects (e.g., interrupts other operations), or error conditions. This leaves significant gaps for a mutation tool with zero annotation coverage.

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 extremely concise at three words ('Enable a drive'), front-loaded with the core action, and has zero wasted words. It efficiently communicates the basic purpose without unnecessary elaboration, making it easy to parse quickly.

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?

Given this is a mutation tool (implied by 'Enable') with no annotations and no output schema, the description is incomplete. It lacks details on behavior, effects, error handling, or return values, which are critical for safe and effective use. The high schema coverage helps with parameters, but overall context is insufficient for a state-changing operation.

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 input schema has 100% description coverage, with the single parameter 'drive' documented as 'Drive identifier (e.g., 'a', 'b')'. The description doesn't add any parameter-specific information beyond this, but with only one parameter and high schema coverage, the baseline is strong. No additional semantics are needed, so a score of 4 reflects adequate coverage without redundancy.

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 'Enable a drive' states a clear verb ('Enable') and resource ('a drive'), but it's vague about what 'enable' means in this context (e.g., power on, mount, activate). It distinguishes from sibling 'drive_off' by implying an opposite action, but doesn't specify how it differs from other drive-related tools like 'drive_set_mode' or 'drive_load_rom_file'.

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 is provided on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., requires a drive to exist), exclusions (e.g., not for already enabled drives), or when to choose siblings like 'drive_set_mode' for configuration instead. The context is implied from the name but not explicitly stated.

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