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

Adds substantial behavior beyond the annotations: partial-update semantics ('Only the fields given are changed'), an authorization constraint for role/isInternalOnly, and a required human-confirmation step before the call. Annotations only say readOnly=false, destructive=true, idempotent=true, openWorld=false; the description supplies the operational constraints those hints cannot.

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, front-loaded with the resource and the field list, then the constraints and the confirm protocol. Every clause earns its place; nothing is restated from the title.

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?

A partial-update mutation tool with 7 params and an output schema present, so return values need no explanation. Permissions, confirmation, and which fields are optional are all covered; an agent has everything needed to invoke it correctly.

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 coverage is 71% and the description reinforces the meaning of leadTimeMinutes (notice before a booking), travelBufferMinutes (gap around bookings) and isInternalOnly (name hidden from callers), which the schema largely already carries. It adds the cross-parameter rule that unspecified fields are left untouched, but adds no format 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?

States a specific verb ('Changes') and resource ('a team member's settings') and enumerates the exact mutable fields. It also disambiguates sourcing of teamMemberId from the sibling list_team_members, so it is distinguishable from add_team_member or remove_team_member without opening any 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?

Gives a concrete call protocol ('tell the user who is being changed and how, and get their explicit yes; then pass confirm: true') and a permission prerequisite (only the account owner can change role or isInternalOnly). It does not explicitly name when to choose this over a sibling tool, but the context is unambiguous.

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