session_interrupt

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

Describes that it sends a user.interrupt and the effect of then_message, but no annotations exist to cover side effects, permissions, or error cases. Lacks full behavioral disclosure for a mutation tool.

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?

Two concise sentences with no waste. First sentence states purpose, second adds key behavioral detail. Front-loaded and 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?

Covers main interrupt function and optional redirect. With output schema available, omission of return values is acceptable. Could mention whether session continues or agent terminates, but overall complete for the tool's scope.

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?

With 0% schema description coverage, the description compensates by explaining both parameters: session_id (implied by 'running agent') and then_message (explicitly explained with behavior). Adds meaning beyond schema.

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?

Description clearly states verb 'Interrupt' and resource 'running agent', and distinguishes from sibling tools like session_message or session_respond which are for sending messages without interrupting.

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?

Description explains the interrupt-and-redirect pattern but does not explicitly compare to alternatives or state when not to use it. No exclusions or prerequisites mentioned.

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