all the tools

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

No annotations are provided, so the description carries the full burden. It mentions ending a session and generating a test file, but doesn't disclose key behavioral traits such as whether this is a destructive operation (e.g., does it delete the session?), what permissions are required, or how the test file is generated and stored. For a tool with no annotations, this leaves significant gaps in understanding its behavior.

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, efficient sentence that front-loads the key action ('End a code generation session') and outcome ('generate the test file'). There is no wasted text, making it highly concise and well-structured for quick understanding.

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 tool's complexity (ending a session and generating a file), no annotations, and no output schema, the description is incomplete. It lacks details on the generated test file's format, location, or any side effects. For a tool with these gaps, the description should provide more context to be fully helpful.

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 input schema has 100% description coverage, with 'sessionId' clearly documented as 'ID of the session to end.' The description doesn't add any extra meaning beyond this, such as format examples or constraints. With high schema coverage, the baseline is 3, as the schema does the heavy lifting.

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 purpose with a specific verb ('End') and resource ('a code generation session'), and mentions the outcome ('generate the test file'). It distinguishes from sibling tools like 'clear_codegen_session' and 'get_codegen_session' by focusing on ending and generating. However, it doesn't explicitly contrast with all siblings, so it's not a perfect 5.

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 by referencing 'a code generation session,' suggesting it should be used after starting one (with 'start_codegen_session'). However, it doesn't explicitly state when to use it versus alternatives like 'clear_codegen_session' or provide exclusions. The guidance is implied but not comprehensive.

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