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 discloses a read operation via 'fetches' and mentions historical lookup capability, but doesn't describe the response format, error conditions, or that token_id appears to be required. The added behavioral context is minimal beyond the schema.

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 description is two short, front-loaded sentences with no redundant information. It efficiently communicates the primary purpose and the historical lookup option.

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 read tool with one optional parameter, the description is mostly adequate. Gaps include no mention of response structure (given no output schema) and no context on how token_id relates to other market tools like dome_markets, which could be important for an agent.

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?

The schema fully documents at_time with type and meaning, and the description introduces token_id as an identifier not present in the schema, which is critical for invoking the tool. However, the description does not elaborate on token_id's format or type, so some ambiguity remains.

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 it fetches the current market price for a market by token_id, with a specific verb and resource. However, it does not distinguish this tool from the similarly named sibling dome_market_price_get, so it lacks sibling differentiation.

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 implies usage for current or historical price lookups, but provides no guidance on when to choose this tool over dome_market_price_get or dome_markets, and offers no exclusions or alternative references.

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