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

Annotations already declare readOnlyHint=true, openWorldHint=true and destructiveHint=false, so the safety profile is covered. The description adds genuinely new behavior beyond the annotations: comments are fetched 'live from the platforms' (no cached/stale copy) and the supported platform set is enumerated, which matters given the open-world hint. It omits rate limits, pagination, and ordering.

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 sentences, both earning their place: the first gives the action and scope, the second gives platform coverage. Front-loaded with the verb and resource and free of filler.

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 two-parameter read tool with full schema coverage and no output schema, the description covers what is read, where the data comes from, and which platforms are supported. It leaves minor gaps an agent might want, such as pagination/limits and result ordering, but nothing blocking 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% and both parameters are documented in-schema, including the useful cross-reference that postId comes from list_posts. The description adds no additional parameter meaning (e.g. whether workspace changes which accounts are queried), so the baseline of 3 applies.

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 (Read) and resource (comments/replies on a post published with Breakreach), so an agent knows exactly what it returns. It stops short of explicitly distinguishing itself from the closest sibling, list_recent_comments, which reads comments across posts rather than for one post.

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?

Usage is implied by the scope phrase 'on a post published with Breakreach' plus the required postId, which signals per-post retrieval. However, it names no alternative (e.g. list_recent_comments, get_conversation_messages) and gives no when-not or prerequisite guidance such as needing a connected account.

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