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

The annotations already declare readOnlyHint=false, destructiveHint=true, openWorldHint=true, and idempotentHint=false, so the safety profile is covered. The description adds that this is a Builder task submission with a fixed collector identifier, which is useful operational context, but it does not explain authentication, rate limits, or what the destructive implication actually means.

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?

The second sentence is a clear purpose statement, but the first sentence is a long, repetitive keyword trigger list with case variants (TikTok/Tiktok) and several near-synonyms. The purpose is not front-loaded, and the trigger list could be shorter while still preserving retrieval value.

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 task-submission tool with no output schema, the description should explain what happens after submission, such as returning a task ID that can be used with scraper_task_status or scraper_task_result. It only says the task is submitted and never describes the response or next steps, leaving a significant gap for an agent trying to complete the workflow.

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%, so the schema already documents all three parameters thoroughly. The description does not add any parameter-level meaning beyond the schema; mentioning the collector identifier is operational context rather than a parameter explanation.

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?

The description states a specific verb and resource: submit a TikTok comment collection Builder task with a fixed collector identifier (tiktok_comment_by-url). This clearly distinguishes it from tiktok_posts and tiktok_profiles, though it does not explicitly contrast with sibling comment tools like youtube_comment or instagram_comment.

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 explicitly lists trigger conditions: when the user needs TikTok comment information combined with verbs such as collect, scrape, crawl, obtain, or extract. No alternative tools are named and no when-not conditions are given, so it falls short of a 5.

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