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

With no annotations provided, the description carries the full burden. It adds meaningful behavioral context such as the POST endpoint, password requirement, and that many 'announcement*' names are taken or reserved, but it does not disclose side effects, reversibility, or failure behavior for this mutation.

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 short sentences, front-loaded with the primary action and then the key constraints. No filler; every sentence adds practical 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?

For a mutation tool with no annotations, no output schema, and partial schema coverage, the definition is adequate but incomplete. It covers authentication and naming pitfalls, but leaves the agent guessing about return values, side effects, and the exact role of every parameter.

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 only 50%, so the description should compensate. It clarifies that the password is the current password and implies the signed-in account context, but it does not explain the 'lagoslife_username' parameter or the 'notification_message' fallback behavior.

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 and resource ('Rename the signed-in Lagos Life account') and even names the endpoint. It clearly distinguishes this from account-creation or login siblings by emphasizing the signed-in account context.

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 useful usage context: current password is required, and it points users to 'register' when they want an available name instead. It does not exhaustively contrast every alternative, but the key routing guidance is present.

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