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

Annotations already flag destructiveHint=true and idempotentHint=true, so the safety profile is covered. The description adds a genuine behavioral disclosure not in the annotations: unauthenticated calls return the specific sentinel 'teams_not_persisted', which an agent needs to interpret a failure. It stops short of saying what happens when the name doesn't exist.

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, action first, edge case second, zero filler. Every clause carries information the agent cannot get from structured fields.

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 single-required-parameter mutation with full annotation coverage and no output schema, this covers the action, the identifier semantics, and one failure mode. The remaining gap is the not-found case and whether deletion is permanent/undoable, the latter partly covered by destructiveHint.

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 100% and the teamId description already says 'Exact group name to delete.' The description's 'by its exact name' reinforces exact-match semantics but adds no syntax, casing, or lookup-failure detail beyond the schema. 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 (deletes) and resource (a homepage Saved group) and clarifies that 'team' means a saved group, which disambiguates it from geographically- or org-oriented siblings. The exact-name scoping also distinguishes it from list_teams/get_team.

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?

Deleting is largely self-evident relative to siblings like rename_team and save_team, but the description never states when to prefer this over those alternatives or any prerequisites beyond the hinted account requirement. Usage is implied rather than guided.

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