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

With no annotations provided, the description carries the behavioral disclosure burden and adequately conveys that this is a non-mutating data retrieval requiring a Sector API key. It also manages expectations by noting the data matches the public board. Minor omissions like rate limits or exact response envelope are acceptable for a zero-parameter read-only tool.

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 description is two tight sentences with no filler. The first sentence concentrates the essential snapshot information, and the second adds the only operational caveat needed (API key). It is front-loaded and every clause contributes value.

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 parameterless tool with no output schema, the description is remarkably complete: it specifies the object set (30 baskets), the exact data fields, the live nature of the data, and the access requirement. Nothing an agent needs to select or invoke the tool correctly is missing.

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?

The input schema is empty, and the tool has no parameters, so the description does not need to explain parameter behavior. The zero-parameter baseline of 4 applies, and the description appropriately focuses on the returned data rather than inventing unnecessary parameter semantics.

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 clearly states what the tool returns: a live snapshot of all 30 Sector Pulse baskets with specific metrics such as average % move, median, breadth, and three rank bases. This distinguishes it from the sibling tools get_history and get_roster by both resource type and time-frame.

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 phrase 'right now' and the title 'Live sector board' make the current-snapshot use case clear, and the API-key requirement provides a concrete precondition for invocation. It does not explicitly name alternative tools or exclusion conditions, but the usage context is unambiguous enough for correct selection.

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