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

Annotations already declare readOnlyHint, idempotentHint, and openWorldHint=false, so the safety profile is covered. The description adds meaningful context beyond that: the returned fields reflect the account's actual TikTok-side settings, so values are externally constrained rather than arbitrary. It does not discuss caching or errors, keeping it at 4 rather than 5.

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 dense with information and zero filler. The purpose is front-loaded before the call-to-action, matching how an agent scans a definition.

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, so the description carries the burden of explaining returns — and it does so by enumerating the concrete fields (nickname, avatar, privacy levels, comment/duet/stitch toggles, max video length). Combined with the preflight guidance, an agent has everything needed to invoke and interpret it.

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%, with both parameters (in_workspace, channel_account_id) fully documented in the schema. The description's mention of 'the connected TikTok account' loosely supports the auto-resolve behavior of channel_account_id but adds no syntax or override detail, so baseline 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?

A specific verb ('Read') plus resource ('the connected TikTok account's posting options') followed by an enumeration of exactly what is returned: nickname/avatar, privacy levels, comment/duet/stitch switches, max video length. Clearly distinct from siblings like tiktok_account_stats or tiktok_list_videos.

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?

Explicit sequencing guidance — 'Call it before posts.publish' — and a downstream instruction ('let the user pick the privacy level'). This tells the agent both when to call it and what to do with the result, which is stronger than most usage sections.

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