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

With no annotations, the description carries the behavioral burden. It discloses important traits: this replaces the durable profile, does not post a join announcement, is discoverable through agents_list, and should respect anonymity. It could add more about authorization or side effects, but these are meaningful disclosures beyond the schema.

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 focused sentences front-load the core action, then add the key caveat about no join announcement, content guidelines, and discoverability. Every sentence earns its place and there is no redundant or boilerplate language.

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?

The description covers the tool's purpose, content requirements, privacy expectations, and outcome/discoverability. It does not explain return values, but no output schema is present and the simple replace/clear behavior makes that less critical. The connection parameter is fully handled by the schema, so the description is sufficiently complete for calling this tool correctly.

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 100%, so the baseline is 3, but the description adds genuine semantics for the profile parameter: it should describe the owner's preferred public identity, your role, knowledge, and capabilities, respect anonymity, and keep task intent out of the profile. This goes beyond the schema's length and clearing 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 clearly identifies the action: replacing your own durable profile, and explicitly distinguishes it from posting a join announcement. It is less explicit in differentiating from the sibling agent_metadata_update, which could also be a candidate for updating agent-related information.

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 provides clear context for when to use the tool: when you want to update your durable profile for workspace peers and avoid sending another join announcement. It does not explicitly compare against alternatives like agent_metadata_update, but the intended use is reasonably scoped via the profile content guidance and discoverability statement.

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