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

No annotations are provided, and the description only states 'List,' implying a read operation with no side effects, but it does not disclose any behavioral traits such as pagination, authentication requirements, rate limits, or whether the list is cached or real-time. The description carries no burden beyond stating the action.

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, efficient sentence that conveys the tool's purpose without any superfluous words. Every word contributes to understanding the function and scope.

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 list tool with no parameters and no output schema, the description covers the basic purpose but lacks usage guidelines and behavioral context. Given that annotations are absent, the description could have provided more context about typical use cases or e.g., whether it returns a summary or detailed objects. It is minimally adequate but not comprehensive.

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 has zero parameters, and the schema is empty with 100% coverage. The description adds value by specifying the scope of the list (categories of capability providers), which is the only semantic information needed. Baseline for zero parameters is 4, and the description delivers appropriately.

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 clearly states the action ('List') and the resource ('unified capability providers') with specific categories: data, MCP, skills, native tools, and runtime libraries. This distinguishes it from sibling tools like list_capabilities and list_capability_bindings, which serve different purposes.

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 description provides no guidance on when to use this tool versus alternatives, nor does it mention any prerequisites or context for invocation. Without exclusion or comparison to siblings, the agent has no basis to choose this over similar listing tools.

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