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

Annotations already establish this as a safe read (readOnlyHint=true, destructiveHint=false), so the description's main job is disclosing what comes back. It does so by naming the richer contents (full capability objects, devices, queue), which is meaningful since there is no output schema. It stops short of describing pagination, missing-kernel behavior, or payload size.

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 zero filler. The contents list is placed immediately after the verb-resource pair, so the most useful information is read first.

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 single-parameter read with no output schema, naming the returned sections compensates well for the absent return-value documentation. It is only mildly incomplete in not covering edge cases such as an unknown kernel ID or how this relates to the similarly-named kernel sub-resource getters.

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?

Only one parameter, kernelId, and schema description coverage is 100%, so the schema already documents it. The description adds no format hints (e.g., where a kernel ID comes from) beyond what the schema provides, matching the baseline of 3.

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 verb (get) and resource (kernel) and enumerates what the payload contains: capability objects, devices, and queue. This partially differentiates it from siblings like get_kernel_devices, get_kernel_jobs, and get_kernel_sensors, though it does not explicitly say it supersedes them.

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?

Usage is only implied: fetch the full detail record for one kernel by ID. There is no explicit guidance on when to prefer this over list_kernels or the narrower get_kernel_devices / get_kernel_sensors calls, and no exclusions or prerequisites given.

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