create_label

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only adds the color format requirement ('hex code without #') but does not disclose side effects, whether labels can be duplicated, permission requirements, or what happens on failure. This is a significant gap for a create operation.

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 extremely concise, comprising two short sentences. The first sentence states the purpose, and the second provides the key parameter detail. Every word earns its place, with no redundancy or fluff.

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 three-parameter create tool, the description covers the core action and the most non-obvious parameter format. The output schema exists, so return values need not be explained. However, it omits any context about project_id shape or preconditions (e.g., project must exist), making it minimally adequate but not thorough.

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?

The description adds meaningful detail for the 'color' parameter, explicitly specifying the accepted format. However, 'name' and 'project_id' are not described beyond their schema types and names. Since schema description coverage is 0%, the description should compensate more fully, but the provided color detail is valuable and the other parameters are fairly self-explanatory.

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 tool's action ('Create a label') and scope ('in a project'), using a specific verb and resource. It distinguishes from sibling creation tools like create_card or create_epic by explicitly naming 'label' as the object.

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?

No guidance is provided about when to use this tool versus alternatives, such as list_labels or similar creation tools. There is no mention of prerequisites, typical use cases, or exclusions, leaving the agent to infer usage solely from the name.

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