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

With no annotations, the description must disclose side effects and behavior. It only states that metadata is provided and a trust score/access level is received. It does not mention whether registration is idempotent, updates existing records, requires authentication, or what happens on duplicate registration.

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 extremely concise: two sentences, 14 words, with the purpose front-loaded. Every word contributes meaning, and there is no filler or repetition.

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 tool with five parameters, no annotations, and no output schema, the description is incomplete. It does not explain required inputs, the registration process, the trust score scale, access levels, or any return value format beyond a vague 'receive trust score and access level.'

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. It only offers the generic phrase 'agent metadata' and does not explain any of the five parameters (agent_name, agent_purpose, owner_org, owner_email, owner_jurisdiction) beyond their property names.

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 clearly identifies the tool as a registration action ('Know Your Agent registration. Provide agent metadata') and states the outcome (receive trust score and access level). It is distinguishable from siblings like kya_status by focusing on registration, though it does not explicitly name any sibling.

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 implies when to use the tool: when an agent needs to register and receive a trust score/access level. However, it provides no explicit guidance on when not to use it or alternatives (e.g., kya_status for checking existing registration).

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