get_tweet_replies

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

With no annotations, the description must fully disclose behavior. It does not mention what the tool returns (though an output schema exists), whether replies are sorted, or if pagination is supported. The 'limit' parameter's existence is implied but not explained in the description.

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 a single, efficient sentence. While concise, it could be slightly more informative without sacrificing brevity, such as noting that it returns direct replies.

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 description is adequate for a simple tool with full schema coverage and an output schema. However, it lacks contextual details like whether it retrieves all replies or only first-level, and how it compares to 'get_thread'. Given the tool's simplicity, a 3 is appropriate.

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 baseline is 3. The description adds no additional meaning beyond the schema's parameter descriptions. It does not explain the tweet_id format or the limit's default/max beyond what's in the schema.

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 clearly states the action ('Get replies') and the resource ('a tweet'), distinguishing it from sibling tools like 'get_tweet' and 'get_thread'. However, it doesn't specify if replies are top-level or nested, leaving some ambiguity.

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?

No guidance is provided on when to use this tool versus alternatives such as 'get_thread' or 'get_tweet'. The description lacks context for appropriate usage scenarios, which is critical given the large number of sibling tools.

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