create_free_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 states this creates a free cluster and shows an example return, but lacks critical details: whether this is a mutating operation (implied but not explicit), what 'free' entails (limits, restrictions), if it requires specific permissions, or how long creation takes. The example response hints at asynchronous creation ('cluster is being created...'), but this isn't explicitly explained.

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 well-structured with clear sections (Args, Returns, Example) and front-loads the core purpose. The example is helpful but could be more concise by integrating it into the Returns section. Overall, it's efficient with minimal wasted 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?

Given the complexity (a creation tool with 2 parameters, no annotations, and no output schema), the description is moderately complete. It covers the basic purpose, parameters, and return example, but lacks usage guidelines, behavioral details (e.g., mutating nature, async behavior), and doesn't fully compensate for the missing structured data. The example return helps but isn't a substitute for a proper output schema.

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 description adds meaningful context for both parameters beyond the schema (which has 0% description coverage). It explains that 'cluster_name' is the name of the cluster to create and 'project_id' is the ID of the project it belongs to, clarifying their roles. However, it doesn't provide format constraints (e.g., length limits for cluster_name) or where to obtain project_id (e.g., from 'list_projects').

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 ('Create a free cluster') and the resource ('in Zilliz Cloud'), making the purpose immediately understandable. However, it doesn't explicitly differentiate this from sibling tools like 'list_clusters' or 'describe_cluster' beyond the creation aspect.

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. It doesn't mention prerequisites (e.g., needing a project_id from 'list_projects'), when not to use it (e.g., if a cluster already exists), or how it differs from other cluster-related tools like 'resume_cluster' or 'suspend_cluster'.

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