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

Beyond the readOnly/openWorld annotations, the description discloses that the backing service calls the Published-Data API serially, which signals latency and rate-limit sensitivity, and it flags third-party/no-affiliation status. It stops short of describing failure behavior or what happens for a board that does not exist, which would be the remaining useful 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 primary purpose is front-loaded in the first sentence and the remaining two sentences are short and distinct in function. The licensing/no-AI-training sentence is arguably boilerplate for an agent selecting a tool, but it is brief and not repeated.

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?

An output schema exists, so return values need not be explained, and the two required parameters are fully schema-covered. What is missing is any clarification of the opaque 'id' parameter's origin (match vs club) and how this differs from the live-board sibling, which would make the definition self-sufficient.

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 carries the parameter documentation burden and a 3 is the baseline. The description adds modest meaning by framing 'board' as a single board within a team match and 'id' as the source identifier, but it never clarifies whether 'id' is the match id, club id, or something else, leaving that ambiguity unresolved.

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 uses a specific verb and resource ('Get game and score data for one team-match board'), which is far more informative than the tool name alone. It does not, however, distinguish this tool from the near-identical sibling 'chesscom_match_live_board', so an agent must infer the finished-vs-live split.

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 explicit when-to-use guidance: nothing says this is for completed rather than in-progress boards, nor when to prefer 'chesscom_match' (whole match) or 'chesscom_match_live_board'. The phrase 'one team-match board' implies single-board scope, but that implication is all the routing signal provided.

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