threads_get_pending_replies

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

With no annotations, the description carries the full burden; 'Get' implies a safe read but that is inference, not disclosure. The approval-enabled prerequisite is real added context, but permissions, pagination behavior, and the result when approvals are off are unstated.

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?

One sentence, no filler, with the scoping condition front-loaded. Nothing redundant or padded.

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?

A 3-parameter read tool with no annotations and no output schema needs a bit more: what the response contains, whether it paginates, and behavior when the post lacks approvals. The purpose and precondition are covered, but those behavioral gaps remain.

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 post_id, reverse, and the approval_status enum are already documented. The description reinforces the pending/ignored values and the approval-enabled constraint on post_id, adding modest value above the schema 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 (get) and a precisely scoped resource (pending/ignored replies awaiting approval on a post with reply approvals enabled). The 'awaiting approval' qualifier distinguishes it from threads_get_replies, though it never names that sibling 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?

The precondition 'post that has reply approvals enabled (enable_reply_approvals)' is a useful usage gate. However, it doesn't say when to prefer threads_manage_pending_reply over this read tool, nor what to do if approvals are disabled.

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