Recent league activity feed

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

Adds useful behavioral traits beyond the readOnlyHint and destructiveHint annotations by describing chronological order and pointing out pagination with size and offset. No contradiction with the annotations.

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?

Two trimmed sentences front-load the core operation and intended use cases while adding the essential pagination hint with zero filler. Every sentence earns its place.

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 complete enough for a read-only, no-required-parameter feed: it gives the content, ordering, use cases, and paging behavior, while the schema covers the rest. The only gap is not naming a similar sibling such as get_transactions.

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 the schema already documents all five optional parameters with defaults and paging semantics. The description mentions size/offset pagination but adds little meaning beyond 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?

States a concrete operation on a clear resource: 'the league activity feed' and describes exactly what kind of log it returns ('who added/dropped/traded what' with chronological ordering. It is clear enough to identify the tool but does not explicitly differentiate from a sibling, and it names no alternative.

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?

Gives clear use contexts: 'Best tool for what did I miss this week' and newsletter or recap writing' tells an agent when to choose it. No when-not guidance or exclusions are present, so it does not reach the explicit alternatives level.

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