get_timeline

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

With no annotations provided, the description must disclose behavioral traits. It only states it is a read operation and implies ordering, but it does not mention authentication, rate limits, pagination, error responses, or what happens if unauthorized. This is insufficient for a tool that requires authentication.

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 sentence, front-loaded with the key action. It is very concise, but it may be too brief, lacking any additional context. However, it earns a 4 for efficiency with no wasted words.

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?

Given the tool has no output schema and only one optional parameter, the description should compensate by explaining what the timeline contains (e.g., a list of tweets) and any limitations. It does not, leaving the agent with incomplete information about the return value or behavior.

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 input schema has 100% description coverage for the single parameter 'max_results'. The description does not add any extra meaning beyond the schema's own description. Baseline 3 is appropriate since the schema already provides the necessary 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 clearly states the verb 'Get' and the resource 'authenticated user's home timeline' with ordering detail 'reverse chronological'. It is specific and distinct from sibling tools like post_tweet, search_tweets, etc., which have different purposes.

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 (e.g., search_tweets for non-timeline tweet retrieval). There is no mention of prerequisites, exclusions, or context. The description is purely functional without any usage direction.

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