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

The annotations already declare this is a non-destructive, non-read-only, idempotent create operation. The description adds useful specifics beyond the annotations: idempotency is case-insensitive, an existing tag is returned unchanged with created: false, and tags are shared across the team.

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 front-loaded with the purpose and usage guidance, then adds idempotency and team-sharing details without waste. It is appropriately sized for a simple three-parameter creation tool.

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?

Given the simple schema, full parameter descriptions, and absence of an output schema, the description covers what the tool does, when to use it, and key behavioral details like idempotency and shared team scope. Nothing critical is missing for correct invocation.

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%, so the schema already documents name, color, and team_id. The description reinforces the optional color format and the role of name, but does not add meaningful semantics beyond the schema for team_id, so the baseline of 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?

The description states a specific verb and resource: create a team tag/label. It also explains the downstream purpose, tagging feedback by name in feedback_post and feedback_update, and distinguishes this from reusing existing labels via tags().

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 to reuse the team's labels when one fits and to create a new tag only when the user wants a new label. It also directs the agent to call tags() first to check for existing tags, giving clear when-to-use and when-not-to-use guidance.

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