futures_spot_price_daily

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is covered. The description adds the output data layout (basis fields), but omits rate limits, data-source caveats, or auth needs, so it is adequate but not rich beyond the annotations.

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 purpose sentence is front-loaded, followed by structured param and return-field documentation. It is longer than minimal because of the full return-column listing, but no sentence is wasted.

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?

With no output schema, the description usefully enumerates the returned columns and documents all params, so an agent can call and interpret the result. The missing piece is routing guidance relative to sibling spot/basis 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 the description carries the burden and does so well: it documents all three params, allowed date formats (YYYY-MM-DD, YYYYMMDD, datetime.date), and the vars_list contract-symbol syntax with a default. The only wrinkle is the default ('today') differing from the schema default of 20210208.

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: spot prices for commodities plus their basis over a specified date range. It is clear what the tool returns, though it does not distinguish itself from close siblings like futures_spot_price or futures_spot_price_previous.

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 guidance on when to use this tool versus alternatives such as futures_spot_price_previous or futures_spot_sys, and no stated exclusions or prerequisites. The agent is left to infer usage from the name alone.

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