futures_settle_shfe

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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=true, so the safety profile is fully covered. The description adds the default-current-trading-day behavior, which is useful context beyond the annotations, but does not disclose rate limits, pagination, or return shape.

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?

Short and front-loaded with the tool identity and source, followed by the parameter and return documentation. The source URL and reST-style directives are slightly noisy but functional. Every sentence carries information.

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 single-parameter read-only tool with no output schema, the description covers the resource, the parameter formats and default, and the return type (pandas.DataFrame). Adequate. Missing only explicit sibling differentiation and any note on output columns, but the annotations already cover safety and the schema covers the parameter.

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 must carry the parameter burden. It documents the accepted formats (YYYY-MM-DD, YYYYMMDD, datetime.date) and the default (current trading day), which is more informative than the bare schema string type. It does not explain the default value mismatch (schema default is '20260119' while description says current trading day), but the format guidance is the key missing piece.

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?

States a specific verb-resource pair ('上海期货交易所-结算参数') and identifies the data source (SHFE) plus the source URL. It distinguishes itself from other exchange settlement tools via the 'shfe' suffix and the Chinese title. Not a tautology, though it does not explicitly name siblings like futures_settle_czce.

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 explicit when-to-use guidance, no mention of alternatives, and no exclusions. An agent must infer from the name that this is the SHFE variant of a family of settle tools. The source URL is informational but does not route the agent.

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