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

Annotations already disclose readOnlyHint=false, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds one genuinely new behavioral trait — acknowledgement occurs only after the selected component renders — but says nothing about the concurrency semantics of expectedRevision or controlToken, which matter for a state-mutating navigation 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 short sentences, no filler, and the primary action is front-loaded before the acknowledgement detail. It is efficient, though the terseness reflects under-specification rather than tight editing.

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 mutating, open-world tool with five undocumented parameters, three of them required, and no output schema, the description leaves major gaps: revision/token handling, idempotency of operationID, and failure behavior. The one acknowledgement sentence is not enough to make the definition complete.

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% across 5 parameters, so the description carries the full burden and largely fails it. It loosely maps to componentID ('focuses a component') and direction ('moves one position'), but operationID, expectedRevision and controlToken — including two required ones — are entirely unexplained.

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 names a concrete verb set ('Focuses a component or moves one position') and implies the two operating modes, which is enough for an agent to separate this from siblings like read_component or update_component. It stops short of stating which parameter selects which mode or what 'focus' means in the canvas UI, but the core purpose is clear.

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?

There is no when-to-use or when-not-to-use guidance and no mention of alternatives among the many sibling tools. The two modes ('focus a component' vs 'move one position') are never disambiguated by condition, leaving the agent to guess which parameter path to take.

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