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

The description adds ordering behavior ('newest first') and filtering capabilities beyond the annotations. Annotations already declare readOnlyHint=true and idempotentHint=true, so the description provides complementary behavioral context without contradiction.

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 sentences, no wasted words. Front-loaded with the core purpose ('most recently disclosed trades — newest first'). Every sentence adds value by defining scope and filter compatibility.

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?

For a simple list tool with optional filters and no output schema, the description is sufficiently complete. It explains the ordering, filter reusability, and relationship to a sibling tool. A marginal improvement could explicitly mention that limit is optional, but the schema covers that.

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 83% (5 of 6 parameters have descriptions). The tool description only mentions the filter parameters collectively without adding new meaning. Baseline score of 3 is appropriate as the schema already does the heavy lifting.

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 tool returns the most recently disclosed trades in newest-first order. It distinguishes from the sibling search_trades by noting it accepts the same filters but is focused on recent trades.

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?

The description explicitly notes that the tool accepts the same filters as search_trades, implying an agent can use it to scope to a chamber or window in one call. However, it does not explicitly state when to use this tool over alternatives or when not to use it.

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