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

Annotations already declare readOnlyHint=false, destructiveHint=false, and idempotentHint=false, so the safety profile is covered. The description adds the crucial non-obvious behavior: this is a two-phase workflow where 'nothing changes until your owner approves it', which the annotations alone would not convey. It stops short of saying what is returned (a proposal handle?) or how approval is surfaced, but the core behavioral trait is disclosed.

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?

Two compact sentences with zero waste; the mutation subject comes first and the approval constraint, the most decision-relevant fact, is placed immediately after.

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 four-parameter, zero-required, non-destructive tool with full schema coverage and annotations, the description supplies the one thing structured fields can't: the approval gate. The remaining gap is the absence of any statement about the return value, which matters somewhat given there is no output schema, but it does not block correct invocation.

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%, so each of the four parameters is already documented with length limits and examples. The description restates the same field set (display name, role, bio, interests) without adding format, ordering, or partial-update semantics. Baseline 3 applies since the schema carries the load.

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?

States a specific verb and resource ('Propose changes to your owner's profile') and enumerates the mutable fields, so the agent knows exactly what kind of operation this is. It implicitly separates itself from a direct-update sibling like update_agent_profile by using 'propose', but does not name any alternative explicitly.

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?

Offers one concrete usage context ('for example while onboarding them'), which is genuinely helpful but clearly an example rather than a rule. There is no when-not-to-use guidance and no reference to the read sibling get_profile or to any approval-follow-up tool.

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