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

With no annotations, the description carries the full burden and does substantial work: it discloses that the write is immediately public, that a staff save grant plus add/change_association permission is required, that revision is an optimistic-concurrency control, and that no membership/certification inference happens. It omits what the call returns, but that is a minor gap for a save operation.

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?

It is short and the purpose is front-loaded, but the telegraphic fragments ('Staff save grant plus add/change_association', 'payload exactly name:{ru,en}…') read as compressed notes rather than prose and take a second pass to parse. No sentence is wasted, yet readability suffers for the density.

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?

For a 4-parameter mutation with a nested free-form payload, no annotations, and no output schema, the description supplies the payload contract, the revision semantics, and the permission gate — enough to call it correctly. Return-value behavior is the only unaddressed piece.

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 coverage is 0%, so the description must compensate, and it does: it specifies the exact payload shape (name:{ru,en}, description:{ru,en}, official_url:HTTPS) and the create-vs-update protocol for association_id and revision. Only the token parameter is left unexplained, which is the one meaningful omission.

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+resource — creating or updating a public DB association — and adds the distinguishing detail that it goes live immediately. It does not name the sibling it supersedes (online_association_get / online_associations_list are obvious complements, but the agent must infer that from the name.

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 gives real branching guidance: association_id null plus empty revision means create; an existing record requires the current revision. It also flags the staff save grant prerequisite and 'confirm wording first'. What it lacks is an explicit statement of when NOT to use this versus other write paths.

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