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

With no annotations provided, the description carries the full behavioral burden. It discloses multiple nontrivial behaviors: a new immutable alias version is created, omitted project/environment arguments inherit the workspace binding, recipe bindings are unaffected, and active generation defaults have a route-compatibility constraint. This is rich, actionable transparency.

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?

Three dense sentences, front-loaded with the core action, followed by essential scoping and side-effect information. There is no filler or 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?

The description covers the most important operational semantics: version immutability, workspace inheritance, recipe-binding isolation, and default aliases. The output schema supplies return-value structure. It is not fully complete because parameter semantics are thin and no explicit sibling routing is included, but it is strong for the task complexity.

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%, so the description must compensate for the five parameters. It only partially clarifies that omitted project/environment inherit the workspace and that the alias moves to an adapter/weight. The meaning of alias, adapter_id, and weight is left mostly to inference from names and schema defaults.

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: explicitly moving a semantic alias to a new registered adapter/weight by creating a new immutable alias version. It also distinguishes this operation from related siblings by noting that existing recipe bindings do not move.

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 clearly frames when the tool is appropriate: when an alias should be retargeted via promotion. It adds an important precondition about route compatibility for aliases serving as active generation defaults. It does not explicitly name sibling alternatives such as bind_adapter_alias or create_adapter_alias, so it stops short of a 5.

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