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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description usefully adds the payload contract: it enumerates the returned fields (score, side, horizon, actionability, source mix, price_change_pct, narrative) and even defines the sign convention for price_change_pct, which is real behavioral context for an agent consuming the result.

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?

Two sentences with the core concept front-loaded, followed by one enumeration of the return fields. The second sentence is long but every clause carries information, and nothing is redundant.

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 carries the burden of explaining return values, and it does so thoroughly with field-level detail. The only gap is that filtering/ordering behavior ('top-scoring', 'active') is left implicit rather than defined.

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 100% and the single limit parameter is fully documented in the schema, so the baseline of 3 applies. The description adds no syntax or format detail about the parameter, and 'top-scoring' hints at ordering but does not define it.

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 clear verb+resource (list top-scoring active confluences) and goes further by defining what a confluence actually is: tickers where independent sources agree. That definition makes the tool's scope unambiguous. It does not, however, explicitly distinguish itself from siblings like list_recent_signals or list_my_signals, so it stops short of a 5.

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 and no named alternatives. 'active confluences' implies a filter, but an agent gets no signal about when this is preferable to list_recent_signals or list_my_signals. No exclusions, prerequisites, or alternatives are stated.

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