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

Annotations already declare idempotentHint=true, destructiveHint=false, and readOnlyHint=false, so the agent knows this is a safe, repeatable write. The description adds 'Idempotent' redundantly and explains parameter meanings, but does not describe what happens upon declaration (e.g., whether it updates an existing seat, what the response contains, or how the room stores it). With rich annotations, a 3 is appropriate for adding minimal behavioral context beyond them.

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?

The description is two sentences, front-loaded with the core action and parameter details, then a compact usage note. Every phrase contributes useful information with no wasted words.

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 4-parameter registration tool with annotations covering safety and idempotency, the description provides enough to call it correctly. It could be slightly more complete by mentioning what happens if the name is already taken or what the response confirms, but these gaps are minor for this simple action.

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 must compensate, and it does: it explains each parameter’s meaning (name as the address the room uses, kind as assistant or coding_agent, context as the repo/folder, capabilities as a few skills). This adds substantial clarity beyond the bare schema.

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 states a specific verb 'Declare' and lists the fields that define a seat (name, kind, context, capabilities), making the purpose clear. It does not explicitly differentiate from siblings, but no sibling performs a similar declaration, so the risk of confusion is low.

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 explicitly says 'call on connect', providing clear timing guidance. The idempotent nature is noted, which helps the agent understand that repeated calls are safe. No when-not or alternative tools are mentioned, but none are needed for a registration tool.

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