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

No annotations are provided, so the description carries the full burden. It discloses that this is a POST request, mentions billing cost (1 credit), and implies a read-like operation ('Receive'). However, it doesn't state auth requirements, rate limits, or potential side effects, leaving some behavioral transparency gaps.

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 description is concise, with the key action and usage scenario in the first sentence, followed by useful metadata (group, billing). No fluff or repetition, though 'tweet informations' is awkwardly phrased. It earns its two sentences.

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?

The tool is simple (one parameter, no output schema), and the description covers purpose, usage context, and billing. But it lacks parameter explanation and a clearer description of return format (just 'all tweet informations and comments'). This is adequate but has clear gaps.

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?

The schema has only one required parameter, tweetId, with no description (0% coverage). The description mentions 'by tweetId' but doesn't explain the expected format (e.g., numeric string) or any constraints. Since schema coverage is low, the description should compensate, but it doesn't provide meaningful parameter semantic detail.

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 the tool 'Receive all tweet informations and comments by tweetId', which clearly identifies the verb and resource. The title 'Tweet Details for large cursors' and the clause about digging deeper into replies when the cursor is growing help distinguish it from sibling tools like get_tweet_tweetId, though 'tweet informations' is somewhat vague.

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 indicates when to use this tool: when the cursor is growing, implying pagination or large reply sets. It doesn't name alternatives but gives clear context for when the POST variant is preferable over GET endpoints. There are no exclusions or alternative names, but the condition is specific enough.

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