generate_morning_brief

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

With no annotations, the description carries the behavioral burden. It discloses meaningful traits: determinism, evidence-only sourcing, and non-advisory status. It does not cover edge behaviors or failure modes, but for a non-destructive briefing generator the key expectations are clearly set.

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?

A single front-loaded sentence with no filler; every qualifier ('deterministic', 'confirmed target trading date', 'source evidence only, not investment advice') adds valuable scoping.

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?

The tool is simple with two optional parameters and an output schema present, so the description is largely sufficient for invoking it. The main gap is what happens when target_date is null/defaulted, but this is inferable from the schema default and context.

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% and the description only gestures at target_date via 'confirmed target trading date', adding no format or explicit meaning for output_format beyond what the enum/default already provide. This is insufficient compensation for the absence of schema-level descriptions.

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 and resource ('Generate a deterministic A-share morning brief') and identifies the target date as a confirmed trading date. This clearly distinguishes the tool from the raw-data siblings like get_morning_news and get_news_coverage.

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 the tool is for producing a morning brief on a confirmed trading date, but it does not explicitly say when to prefer this over the sibling tools or exclude other use cases. The usage context is present but not fully articulated.

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