list_labels

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

With no annotations provided, the description carries the full burden. It implies a read-only operation via 'List' and states the return includes UUIDs, which is useful. However, it does not disclose behavior around the optional project_id (e.g., what happens if omitted) or any auth/rate-limit considerations, so it is adequate but not rich.

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, front-loaded sentence with no filler. It states the action and the purpose efficiently, earning its place.

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 tool is simple with one optional parameter and an output schema, so the description need not detail return values. However, the optional project_id is not explained, which is a notable gap. Overall, it is mostly complete but leaves a key ambiguity for a low-complexity tool.

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 0%, and the description does not elaborate on project_id. 'A project's labels' implies project_id selects a project, but it doesn't mention that the parameter is optional or what the default behavior is, leaving ambiguity. The description adds minimal value beyond the schema.

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 uses a specific verb+resource ('List a project's labels') and provides context by explaining the UUIDs are needed to tag work items. This clearly distinguishes it from sibling tools like create_label and update_label, which are mutations.

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 this tool: to fetch label UUIDs before tagging work items. It provides clear context but does not explicitly name alternatives or state when not to use it, though the context is sufficient for a simple list operation.

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