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

Annotations already flag destructiveHint/idempotentHint=false/openWorldHint, and the description adds genuinely new behavior: without confirm nothing is sent (preview only), the reply is publicly visible, and a separate manage:inbox permission is required. These are exactly the consequences an agent needs before invoking a public, irreversible post.

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 tight sentences, front-loaded with purpose, then the visibility warning, then the confirm flow. No filler and no repetition of schema fields beyond what is load-bearing.

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 public, destructive mutation with no output schema, the description covers the safety profile, the dry-run/preview behavior, the permission requirement, and where the IDs come from. Nothing an agent needs in order to call 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% and the schema already documents confirm's preview semantics and the ID sources, so the description largely restates structured data. It adds only the permission context, not new per-parameter syntax or constraints, so the baseline 3 is right.

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+resource ('Reply to a comment on one of your posts') and explicitly distinguishes this from a direct-message reply, which is the nearest sibling risk (soclo_inbox_reply, soclo_ads_reply_to_ad_comment). An agent can tell them apart without opening either schema.

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 gives a clear precondition chain: get postId/accountId from soclo_inbox_comments, then pass confirm:true only after owner approval. The public-vs-DM distinction implicitly steers selection, but no sibling is named by tool name and no explicit 'use X instead when Y' rule is given.

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