set_glance_mode

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

With no annotations, the description carries the full burden; 'toggle or set' does correctly signal a state mutation, and the parenthetical Settings path adds useful context. However, it omits key behavior: whether a simulator must be booted, whether the state change persists or is reverted, and the screenshot side effect is only visible in the schema, not the description.

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?

A single tight sentence with the action and target front-loaded and the testing rationale appended. Nothing is redundant or padded.

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 three-optional-parameter mutation tool with no output schema and no annotations, the description covers what the tool does and why, but leaves preconditions and state-persistence behavior unexplained. The screenshot behavior is handled by the schema, which partially compensates.

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 description coverage is 100%, so all three optional parameters (enabled, wait_ms, capture_after) are already fully documented in the schema, including the omit-to-toggle semantics. The description adds no parameter-level meaning beyond that, which is baseline 3 given the high coverage.

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?

States a specific verb pair ('Toggle or set') and a specific resource ('simulator Glance View mode'), plus the UI location (Settings > Glance View) and the reason (testing widget glance summaries). No sibling tool touches glance mode, so differentiation is implicit rather than stated.

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 phrase 'for testing widget glance summaries' implies the testing context in which to use it, but there is no explicit when-not guidance, no mention of prerequisites (e.g. that a booted simulator or active device is required), and no pointer to siblings like simulator_status or get_screenshot.

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