Get Market Settlement

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

Annotations already declare readOnly, idempotent, non-destructive, and open-world, so the safety profile is fully covered structurally. The description adds no behavior beyond that: it does not say what happens for an unresolved market, whether an error or empty result is returned, or the units/scale of the settlement price. For a lookup whose main ambiguity is settlement state, this is a real 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?

One front-loaded sentence with no wasted words. It is arguably too terse for the ambiguity involved, but nothing is redundant or buried.

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 one-parameter read, the definition is minimally sufficient to invoke the tool. However, with no output schema and no explanation of the returned value's format or the unresolved-market case, an agent cannot predict the result shape from the description alone.

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% with a single required slug parameter, so the schema already carries the parameter documentation and a baseline of 3 applies. The phrase "by its slug" restates the schema without adding format, case, or resolution-behavior detail.

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 states a specific verb and resource ("Retrieve the settlement price for a specific market") and names the keying parameter (slug). It is clear what the tool returns in concept, but it does not distinguish itself from close siblings such as get_market_by_slug, get_market_bbo, or get_price_history, which an agent could plausibly pick instead.

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 when-to-use guidance and no mention of alternatives or prerequisites. The description does not say whether the market must already be resolved, nor why one would call this instead of get_market_by_slug or get_price_history.

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