adb_test_session_end

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

The description discloses that it writes a manifest and returns a path, which are useful behavioral traits. However, without annotations, it does not specify side effects like whether it is destructive or safe, what happens if no session is active, or if it is idempotent.

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 sentence that front-loads the core action and includes specific results. Every word is necessary, and there is no 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?

For a simple tool with no parameters and no output schema, the description covers the essential: what it does and what it returns. It implies the need for an active session, which is reasonable. Minor gaps like error handling or idempotency are acceptable given the tool's simplicity.

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 tool has no parameters, and schema coverage is 100%. The description adds no parameter information because none is needed. Baseline for zero parameters is 4.

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 ('End the active test session') and includes secondary effects ('Writes a summary manifest', 'returns the session directory path'). While it does not explicitly differentiate from siblings like adb_test_session_start or adb_test_step, the name and context make the purpose unambiguous.

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 usage when finishing a test session, but it lacks explicit guidance on when to use this tool versus alternatives, what prerequisites are needed (e.g., an active session), or when not to use it.

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