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

Annotations only declare non-read-only, non-idempotent, non-destructive. The description adds the critical behavioral facts the annotations cannot express: the secret_key IS the profile, anyone holding it can spend the balance, and there is no recovery. It also discloses the return payload (profile_id + secret_key) and that creation constitutes acceptance of Terms and Abuse policy.

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 purpose and the security warning are front-loaded, and the follow-on actions and policy links are placed last where they belong. It is slightly dense, with the Terms/Abuse URLs taking a full sentence, but every sentence carries actionable information.

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?

There is no output schema, and the description compensates by naming exactly what is returned (public profile_id and secret_key). For a zero-required-parameter creation tool, the security model, follow-on funding step, and pricing reference cover everything an agent needs.

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% with a single optional 'name' parameter already documented as an optional display name with an example. The description adds no further parameter detail, so the baseline 3 applies.

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 first sentence states a specific verb and resource ('Create your Agent Anthill profile') and immediately scopes it as free. This is unambiguously distinguishable from sibling operations like anthill_delete or anthill_rotate_key.

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?

It explicitly routes the agent forward with 'Next step: fund it with anthill_deposit' and 'Prices: see anthill_pricing', naming the alternatives for the follow-on actions. It does not state when NOT to create a profile (e.g. that an existing profile_id/secret_key should be reused instead), which keeps it 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.