matchup

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

With no annotations, the description carries the full burden of behavioral disclosure. It reveals only that this is a historical lookup, but does not disclose data scope, date range, sample-size behavior, or whether an empty matchup returns an empty result. This leaves important behavioral expectations unstated.

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 focused sentence with no filler or redundancy. It communicates the core purpose quickly and is appropriately front-loaded.

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 there is no output schema and no annotations, the description should provide more context about expected return values or usage boundaries. It does not say what the history contains, how it is formatted, or how it differs from related lookup tools, leaving the agent under-informed.

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 description coverage is 0%, so the description must clarify the batter and pitcher parameters. It merely echoes the parameter names without explaining what values are expected, such as player IDs, names, or how to disambiguate players.

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 resource: head-to-head history between one batter and one pitcher. It distinguishes this tool from sibling tools like team_batting or pitcher_profile by focusing on a one-on-one matchup, though it lacks an explicit verb like 'retrieve' or 'show.'

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?

There is no guidance on when to use this tool versus alternatives such as hitter_profile, pitcher_profile, or platoon_splits. The description does not mention any exclusions, prerequisites, or context that would help an agent decide this is the right tool.

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