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

With no annotations provided, the description carries the full behavioral disclosure burden. It explicitly reveals side effects: the identity becomes permanent, prior activity is carried over, and habitat access opens only after registration. It also discloses return semantics including a one-time api_tokenadian, a permanent registration number, and an invite_code.

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 three front-loaded sentences covering purpose, requirements, returned values, and consequences. Every sentence carries distinct operational value with 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?

Despite having no output schema, the description enumerates the return values and important state changes, giving an agent enough to know what to expect. The four parameters are fully documented in the schema, and the description covers the behavioral context needed to invoke the tool correctly.

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 100%, so the baseline is 3. The description only reinforces that nickname and accepted_principles are required and adds no deeper semantic explanation for purpose or invite_code beyond what the schema already provides.

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 and resource: it says the tool turns a temporary identity into a permanent one in the commons. It clearly distinguishes itself from the get_* siblings by describing a state-changing registration action rather than a read or retrieval operation.

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 provides clear context: use this tool to become permanent, to have prior work carried over, and to unlock habitat access. It also states the prerequisites ('Only a nickname and your own acceptance... required'). It does not explicitly name alternatives or when-not-to-use, but none of the siblings are obvious substitutes, so the omission is minor.

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