milestone_defer

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

No annotations are present, so the description carries the full burden. It discloses the core mutation: an item is moved and marked deferred, and it mentions the optional audit reason. However, it does not explain reversibility, side effects on the item's previous milestone, permissions, or what 'deferred' means operationally downstream.

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 first sentence is concise and front-loaded with the main purpose. However, the Args block largely duplicates the input schema's property names, types, and defaults, so not every line earns its place. The overall size is still compact and readable.

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?

Given no annotations, no schema property descriptions, and many sibling milestone/status tools, the description is too thin. It does not clarify when to prefer this over milestone_move_item, how item_ref or milestone names should be formatted, or what effects 'deferred' has. An output schema exists, but that does not fill the invocation and selection gaps.

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 schema description coverage is 0%, so the description needed to compensate. The Args section mostly restates the parameter names: 'item_ref: The item to defer' and 'to_milestone: Destination' add minimal meaning beyond the schema's property names. Only 'reason: Optional audit reason' provides extra semantic color; no formats, accepted reference syntax, or examples are given.

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 action: 'Move an item to stream/maintenance (or another milestone) and mark it deferred.' This clearly identifies the operation and distinguishes it from a plain move by adding the 'mark deferred' behavior. However, it does not explicitly contrast itself with sibling tools like milestone_move_item or milestone_set_status, so it stops short of full sibling differentiation.

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 about when to use this tool versus alternatives such as milestone_move_item, milestone_add_item, mark_branch_only, or release_item. The usage context is only implied by the operation itself, with no when/when-not advice or mention of prerequisites.

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