create_tag

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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It states 'create' but does not disclose any side effects, idempotency, required permissions, or what happens if a tag with the same name already exists. This is insufficient for a mutation operation without annotation support.

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 a single sentence with no unnecessary words. It is front-loaded with the action and resource, and it effectively communicates the tool's purpose without redundancy.

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 simple create tool with three parameters and no output schema, the description is minimal but adequate. It does not mention that only 'name' is required or what the response format looks like, but the schema covers parameter requirements. The lack of behavioral details (e.g., duplicates, permissions) leaves some gaps for an agent, so a maximum of 3 is warranted.

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 the input schema already fully documents all three parameters (name, color, description). The description adds no extra parameter semantics beyond what the schema provides, but given full coverage, a baseline of 3 is appropriate.

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 'Create a new tag', which is a specific verb and resource. It distinguishes itself from sibling tools like list_tags, update_tag, and delete_tag by focusing on creation. The phrase 'to organize subscribers' adds context about the purpose of 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?

The description implies when to use the tool (when you need to create a tag) but does not explicitly mention alternatives or exclusion criteria. No guidance is provided on when to use this tool versus update_tag or delete_tag, so it relies on the verb 'create' for clarity.

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