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

Annotations establish the safety profile (not read-only, not destructive), and the description adds real context beyond that: a founder-level JWT is required, the action is audited as the founder, and omitting enabled resets the lane to its default rather than leaving it as-is. That default-reset behavior is non-obvious and valuable.

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?

Three compact sentences with no filler, and behavior is front-loaded. Leading with the JWT requirement ahead of the tool's core action is a slight ordering nit but costs almost nothing.

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 two-parameter mutation with no output schema and 0% schema coverage, it covers auth, effect, default-reset, and audit. It does not indicate what a valid lane identifier looks like or what the response returns, leaving the agent to look elsewhere for lane values.

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 0%, so the description carries the burden and largely does: it explains that enabled is true/false and that omitting it reverts to the default. The lane parameter is only implied ('one platform lane'), with no hint of valid values or format, which is the remaining gap.

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 and resource: turn one platform lane on or off, with the enabled semantics spelled out. It is clearly distinguishable from read-oriented siblings like platform_interfaces_get, but it does not explicitly contrast itself with related toggles such as agent_mode_set or room_config_set.

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?

It implies usage through prerequisites (founder JWT) and the omit-enabled rule for reverting to default, which is genuinely useful guidance. However, it never states when to prefer this tool over adjacent configuration tools, so the agent must infer applicability.

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