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

Annotations already cover read-only safety and closed-world scope, and the description adds genuinely non-obvious behavioral context: the call costs $0.03 USDC on Base via x402, so the agent knows payment is involved. It stops short of explaining the payment flow (wallet, failure mode without funds) and adds a useful 'not legal advice' disclaimer, but the cost disclosure is the kind of auth-adjacent detail that earns credit.

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?

Three short fragments with no filler, and the content of the digest is front-loaded before the cost note. The telegraphic style is dense but readable; nothing 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?

For a paid tool with no output schema, two undocumented parameters, and an unclear time/scope window for the digest, the description is too thin. An agent still doesn't know what period the digest covers, how to actually pay, or what filters do.

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 both parameters, yet it never mentions 'sector' or 'min_impact'. Worse, the word 'sectors' appears as an output field, which risks confusing it with the input parameter of the same name; only the min_impact enum is self-explanatory from the schema.

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 identifies the resource (an annotated digest) and its contents — EN/zh-Hans summaries, impact level, sectors, entities — but uses a noun phrase with no verb, so the agent must infer what the tool actually does (aggregate? summarize recent notices?). It also fails to distinguish itself from the close sibling weekly_brief, another digest-style tool.

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 statement of when to use this tool versus weekly_brief, latest_notices, search_notices, or headline. The only supplementary sentences are a liability disclaimer and a price, neither of which tells the agent when this is the right choice.

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