set_default_cluster

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It discloses the effect on other tools (they will use this default), but does not mention whether the alias must already be registered, whether the setting is persistent, or any side effects.

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, compact sentence that directly states the action and its consequence. There is no redundancy or irrelevant information.

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 one-parameter tool, the description covers the core purpose and effect on other tools. However, it lacks important context such as prerequisites (e.g., the alias must exist) and does not mention return behavior or errors, leaving some gaps.

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 schema provides no descriptions for the 'alias' parameter (0% coverage), and the description does not explicitly explain that the parameter is the cluster alias to be set as default. The meaning is only implied by the tool name and context, leaving the agent to infer parameter semantics.

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 tool's function: setting the default cluster. It also explains the context (used when no cluster_alias is provided to other tools), which distinguishes it from sibling cluster management tools such as register_cluster or list_clusters.

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 effectively communicates when to use this tool: to establish a default cluster so other tools do not need a cluster_alias. It doesn't explicitly name alternatives or exclusions, but for a simple setter this is sufficient contextual guidance.

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