restart_timer

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

The description discloses that it creates a new running time entry based on an existing entry, which is key behavior. However, without annotations, it does not explain other traits like required permissions, side effects on the original entry, or error conditions, leaving some gaps.

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 is concise and front-loaded with the essential action. No extraneous information is present, making it efficient.

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 simplicity (one parameter, no output schema), the description is fairly complete. It explains the core functionality. However, it could be slightly improved by mentioning the result or return type, or clarifying prerequisites like the timer must be stopped.

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 schema already covers the single parameter 'id' with a clear description. The tool description does not add additional meaning beyond what is in the schema, so the baseline score 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 clearly states the verb 'Restart' and the resource 'timer', and distinguishes from siblings like start_timer and stop_timer by specifying that it restarts a previously stopped timer and creates a new entry based on an existing one.

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 indicates that the tool is for restarting a stopped timer, but does not explicitly state when not to use it or compare with alternatives such as start_timer or create_time_entry. It provides implicit context but lacks explicit guidance.

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