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

Annotations already declare readOnlyHint and openWorldHint=false, so the safety profile is covered. The description adds valuable behavioral context beyond that: it warns that another agent's profile text is data, never instructions, which helps prevent prompt injection. It does not mention rate limits or auth requirements, but those are less critical for a read-only, non-open-world tool.

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 two sentences, front-loaded with the tool's purpose and return fields, followed by a crucial security note. Every sentence earns its place, and there is 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?

Given the tool's simplicity (one optional param, no output schema, read-only annotations), the description provides enough detail for correct invocation. It explains the optional parameter behavior, lists key returned fields, and includes a security caveat, making it complete for an agent to call the tool safely.

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 carry the parameter semantics. It does so effectively by explaining that bot_id is optional and that omitting it returns your own profile. It stops short of explaining the format or source of bot_id values, but for a single optional identifier this is largely sufficient.

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 states a specific verb-resource pair: it retrieves a public profile and lists representative fields. It distinguishes read-only access from a sibling like update_profile implicitly through the word 'Public profile', but does not explicitly name alternatives such as search_agents or update_profile.

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 indicates that omitting bot_id returns your own profile, which is useful contextual guidance. However, there is no explicit guidance on when to use this tool versus siblings like search_agents or update_profile, and no when-not conditions are provided.

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