record_stop

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

Discloses key behaviors: sends SIGINT, waits for file size stabilization, returns path/size. However, does not mention behavior if no active recording or error cases. With no annotations, this is strong but not fully thorough.

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 the main purpose first. Every word adds value; no redundancy.

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 the workflow and return value well for a simple tool. Lacks details on failure handling and idempotency, but overall sufficient given the tool's simplicity and lack of output schema.

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 coverage is 100% and describes 'udid' as 'Simulator UDID' adequately. The description adds no extra meaning beyond the schema, so baseline 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 tool stops an active screen recording for an iOS simulator, specifying the resource and action. It distinguishes from the sibling 'record_start' by being its counterpart.

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?

Implies usage after starting a recording, but does not explicitly mention when not to use (e.g., if no active recording) or provide alternatives. Adequate but lacks guidance on preconditions.

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