import_opening_statistics

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

No annotations are provided, so the description carries the full burden. It implies a write operation and hints at provenance ('source-attributed') and population scoping, but never states whether existing statistics are merged or overwritten, whether duplicates are detected, what permissions are needed, or what happens on partial input. For an 8-required-parameter write tool this is a significant gap.

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?

A single front-loaded sentence with no filler or repetition. It is appropriately sized, though its brevity is partly under-specification rather than disciplined economy.

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 described, but the tool has 8 required parameters with zero schema documentation, no annotations, and no output-schema relief for input semantics. The description does not come close to filling that gap.

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% across 8 required parameters (fen, move, source, source_date, population, and three win/draw counts), and the description explains none of them. It only gestures at 'source-attributed' and 'population', leaving formats like the FEN string, move notation, and source_date encoding undocumented everywhere.

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 specific verb ('Import') and resource ('source-attributed aggregate opening outcomes') with a scope qualifier ('explicitly described game population'). This distinguishes it from sibling writers like import_study and import_opening_plan, though it never explains how it differs from import_opening_tsv, which appears to be the closest analogue.

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 statement of when to use this tool, when not to, or which sibling import path to prefer for a given data format. With four other import_* siblings in the list, the absence of routing guidance is costly.

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