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

Annotations already flag destructive=true and openWorld=true, so the safety profile is declared. The description adds the important nuance that effects are those of an arbitrary target tool and that this is a recovery path for a stale tool list; it stops short of saying what happens when the name is unknown or when no tab is paired.

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 sentences, zero filler, with the usage condition front-loaded right after the purpose. Nothing repeats the title or the schema.

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?

There is no output schema, and the description never says what a call returns (presumably the target tool's own result) or how failures surface for an unknown tool name or unpaired tab. For a nested-object dispatcher this is an adequate but incomplete definition.

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% and each of the three parameters is documented in-schema, including the resumeKey session caveat. The description adds no meaning beyond that, so the baseline 3 applies.

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: 'Call any tool of the paired studio tab by name' – an agent immediately knows this is a generic dispatcher, not a status/docs tool like the siblings. It does not explicitly name genmc_status/genmc_pair as the routing targets, leaving a small differentiation gap.

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?

Gives an explicit trigger ('when your tool list has not refreshed after pairing or after the user switched studios') and an explicit alternative ('otherwise call the tool directly'). The when-to-use, when-not-to-use, and fallback path are all stated outright.

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