create_tag

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

The description goes well beyond annotations, disclosing duplicate guard (case-insensitive), dry_run preview behavior, confirmation via MCP elicitation or confirm=True, and required permission. This gives the agent a solid sense of side effects and prerequisites.

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 concise sentences: the first states purpose, the second and third cover behavioral safeguards and permissions. No redundant wording or unnecessary detail.

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?

The description, combined with the input schema and annotations, is fully adequate for a simple tool. It covers purpose, parameters, side effects, and prerequisites, and the output schema handles return values.

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?

With 0% schema description coverage, the description compensates well: it explains name (tag name with duplicate check), dry_run (preview), and confirm (confirmation). It doesn't explicitly name the parameters, but the semantics are clear from context.

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 clearly states the action ('Create a new tag/label') and its purpose ('used to group items'), distinguishing it from sibling tools like list_tags and create_category. The opening 'Modifies merchant data' is somewhat generic but quickly clarified.

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?

Usage is implied: use to create a tag. It mentions the required permission (INVENTORY_W) and behavior like dry_run and confirm, but does not explicitly contrast with alternatives or state when not to use.

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