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

Annotations declare the safety profile (readOnlyHint=false, destructiveHint=false, openWorldHint=true), and the description adds substantial context beyond it: platform-specific semantics (YouTube 'rejected' plus replies), idempotency when the comment was already deleted, the 'no longer counts as unanswered' side effect, and precise handling for 403 reconnect_required, 422 cannot_hide and 502 hide_not_applied.

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?

Front-loads the core action and is information-dense with essentially no wasted sentence, but it is delivered as one very long run-on paragraph that is harder to scan than a structured breakdown of error cases would be.

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?

No output schema exists, yet the description still tells the agent what the success response indicates and how each error code should be handled. For a two-parameter mutation tool with open-world behavior, nothing an agent needs to invoke it correctly is missing.

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 real disambiguation the schema lacks: it stresses the message id (#id) from get_inbox_conversation/get_next_unanswered is required, not the conversation id, and confirms the default hide=true toggle semantics. It stops short of new syntax detail but clearly earns above baseline.

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 pair (hide/unhide) and resource (a comment someone left on the workspace's posts), names the platforms, and clarifies the actor scope ('as the post owner'). An agent can distinguish it from delete_inbox_comment, mark_inbox_read and reply_to_inbox immediately.

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?

Explicitly states the identifier to pass (message id, not conversation id) and names get_inbox_conversation and get_next_unanswered as the sources. It also gives when-not-to-retry conditions and routes to mark_inbox_read for the 422 case, so alternatives and exclusions are covered.

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