close_milestone

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

No annotations are provided, so the description carries the full burden. 'Close' implies a state change, but the description does not disclose whether the operation is reversible, whether it sets a 'closed' state vs removes the milestone, whether it requires an existing milestone, or what the side effects are. For a mutation tool, this is a significant gap.

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 concise sentence with no wasted words. It is front-loaded and easy to parse, though it is so brief that it borderlines on under-specification rather than true conciseness.

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 has only three scalar parameters and no output schema, so the complexity is low. However, the complete lack of annotations, behavioral disclosure, and parameter semantics leaves an agent without enough context to confidently invoke it correctly, particularly around the close-vs-delete ambiguity.

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 adds no parameter-level meaning. The parameters owner, repo, and milestone_id are self-explanatory from their names and types, but the description does not clarify the relationship between them (e.g., that milestone_id belongs to the identified repository) or any constraints such as the milestone needing to be open.

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: 'Close a milestone.' This is clear and unambiguous about the operation being performed. However, it does not differentiate itself from sibling tools like list_milestones, relying on the verb to imply the distinction rather than stating it.

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?

There is no guidance on when to use this tool versus alternatives, nor any mention of when not to use it. Notably, there is no clarification about how closing relates to deleting or completing a milestone, which is a key usage distinction an agent would need.

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