get_latest_timeline

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

With no annotations provided, the description carries full burden but offers minimal behavioral insight. It implies a read operation ('Get tweets') but doesn't disclose authentication needs, rate limits, pagination behavior, or what happens if 'count' exceeds available tweets. The mention of 'your home timeline' hints at personalization but lacks detail.

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 that front-loads the core purpose. There's no wasted verbiage, and it directly communicates the tool's function without unnecessary elaboration.

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's moderate complexity (fetching personalized timeline data), no annotations, and an output schema (which handles return values), the description is minimally adequate. It states what the tool does but lacks context on usage, behavioral traits, or parameter nuances, leaving gaps for an AI agent to infer.

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 description adds no parameter semantics beyond what the input schema provides (schema description coverage is 0%, but the schema itself documents 'count' with type and default). Since there's only one parameter with basic documentation in the schema, the baseline is 3—the description doesn't compensate for the coverage gap but doesn't worsen it either.

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 tweets') and resource ('from your home timeline'), specifying it's for the 'Following' timeline. However, it doesn't explicitly differentiate from sibling tools like 'get_timeline' (which might have different scope) or 'get_user_mentions', leaving some ambiguity about when to choose this specific tool.

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?

The description provides no guidance on when to use this tool versus alternatives like 'get_timeline' or 'get_user_mentions'. It mentions the 'Following' timeline but doesn't clarify if this is the default or only option, nor does it reference any prerequisites or exclusions.

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