get_features

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 explaining behavior. It states that the tool returns a dict of supported features, which implies a safe read operation, but it does not explicitly confirm that it is read-only, require no authentication, or mention any limitations. The description adds some value by listing example contents but lacks explicit behavioral disclosure.

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 concise and front-loaded: one sentence states the purpose, followed by a short 'Returns' line giving example contents. Every word earns its place, and there is no redundant or boilerplate text.

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 simple getter with no parameters and an output schema, the description adequately covers return value and key examples. It could have expanded on edge cases or the exact shape of the returned dict, but the existing detail is sufficient for an agent to invoke the tool correctly.

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 accepts zero parameters, and the schema coverage is 100%. According to the calibration, the baseline for zero parameters is 4, and the description does not need to explain parameters. It additionally clarifies the return type, which is helpful.

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 uses a specific verb ('Get') and clearly identifies the resource ('ComfyUI server feature flags and capabilities'). It distinguishes itself from siblings like get_system_stats by focusing on feature flags and capabilities rather than runtime statistics.

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?

While the purpose is clear, the description provides no explicit guidance on when to use this tool versus alternatives (e.g., get_system_stats or get_queue). There is no mention of exclusions or preferred contexts, so the usage is implied rather than specified.

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