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

No annotations are provided, so the description carries the burden. It discloses that the tool creates a suite, supports nesting, and returns the created suite with id, displayId, and name. However, it doesn't mention potential side effects, permissions, or what happens if parentSuiteId is invalid. The description adds some behavioral context beyond the schema, but not rich detail.

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 two sentences, front-loaded with the core purpose, and includes the key nesting behavior and return value. Every sentence earns its place with no redundancy.

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 create tool with 3 parameters and no output schema, the description covers the essential aspects: what it creates, how nesting works, and what is returned. It doesn't explain error cases or edge cases, but for a straightforward creation tool, this is nearly complete. A 4 is appropriate.

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?

Schema description coverage is 100%, so the schema already documents all three parameters. The description adds context for parentSuiteId by explaining nesting and the return format, but it doesn't add significant meaning beyond the schema. Baseline 3 is appropriate.

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 verb 'Create' and the resource 'test suite', and defines it as 'an organizational grouping of tests and test plans'. It also distinguishes itself from siblings like test_suite_add_item and test_suite_list by focusing on creation and nesting via parentSuiteId. The return value is specified, which helps an agent understand the tool's purpose.

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 implies when to use this tool: when creating a new test suite, including nested suites via parentSuiteId. It doesn't explicitly state when not to use it or name alternatives like test_suite_add_item, but the context of 'create' and the mention of nesting provide clear usage context. A 4 is appropriate because it gives clear context but lacks explicit exclusions.

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