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

Annotations already establish readOnlyHint=true and openWorldHint=false, so safety is covered. Beyond that, the description discloses two genuinely useful traits: only closed (not open) trades are returned, and results are paginated by position rather than by time or offset.

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?

One sentence, no filler, with the resource and its payload front-loaded and the pagination behavior trailing. The parenthetical is dense but each listed field earns its place; the only cost is that so much compression leaves gaps.

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 shape needn't be spelled out, and annotations cover safety. What remains missing for a 3-parameter scoped-list tool is the meaning of the limit default, the required-ness of strategy_id, and any routing versus the sibling aggregate tools.

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 all three parameters rely on the description for meaning. 'Paginated by position' does explain that 'after' is a position cursor, which is real added value, but neither 'limit' nor 'strategy_id' is addressed and there is no hint that strategy_id is required.

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?

Names a specific resource (closed model trades) and itemizes the content returned (sizing, fills, costs, funding, Arena fees, USD/R), which is more informative than the bare name. It does not differentiate itself from adjacent read tools like get_fees or get_performance, so an agent must infer that 'trades' means individual closed positions rather than aggregate performance.

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 versus get_performance or get_fees, and no prerequisites or exclusions. The word 'Closed' implies it excludes open positions, but that contrast is never made explicit against any sibling tool.

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