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

Annotations already declare readOnlyHint=false, destructiveHint=false, and idempotentHint=false, so the safety profile is covered. The description adds genuinely non-derivable context: the personal-API-key requirement and the fact that organization keys cannot manage teams, which is a real operational constraint an agent must know before calling.

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 tight sentences, front-loaded with the action and its optional scope. The middle sentence on escalation semantics is arguably tangential to the act of creating a team, but it is short and earns its place as domain context.

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 creation tool with no output schema, the definition covers the action, the optional member placement, the domain role of teams, and the auth constraint. Nothing an agent needs to invoke it correctly is missing, though the return shape is unstated (acceptable absent an output schema).

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 both parameters are already documented in the schema, and the baseline is 3. The phrase 'optionally with its first members' restates the optionality of membership_ids but adds no syntax, format, or sourcing detail beyond the 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 opens with a precise verb+resource ('Create a team') and immediately scopes it ('optionally with its first members'), which cleanly separates it from siblings like create_agent or create_escalation_path. An agent can identify the operation without opening the schema.

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 explains what a team IS ('escalation targets: a level that names a team reaches every current member...'), which implies the reason to create one, but it never states when to use create_team versus rename_team, set_team_members, or archive_team. Usage is implied rather than directed.

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