Start Manual Test Session

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

Descriptions should add value beyond annotations, but here it only repeats the purpose. Annotations provide readOnlyHint=false, idempotentHint=false, destructiveHint=false, but no behavioral details (e.g., whether a session ID is returned, if it modifies state, expected side effects). The tool could create a session, but this is not disclosed.

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 very concise: a single 7-word sentence. It is front-loaded and wastes no words. However, it may be too brief, sacrificing necessary detail for brevity.

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 4 parameters and no output schema, the description is insufficient. It does not explain what a 'manual execution session' is, how it relates to other test management actions, or what happens after invocation. Sibling tools like 'submit_manual_test_results' imply a workflow that is not clarified. More context is needed for correct usage.

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 parameters. The description adds no additional meaning beyond the schema. With full coverage, a baseline of 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 states the action: 'Start a manual execution session for a launch.' It clearly identifies the verb ('Start') and resource ('manual execution session'). However, it does not differentiate from sibling tools like 'submit_manual_test_results' or 'rerun_test_results_manually', which could be confused. A more specific scope would improve clarity.

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?

No guidance on when to use this tool versus alternatives. There is no mention of prerequisites, context, or cases where this tool should not be used. The description is a single sentence with no usage hints.

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