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

With no annotations, the description carries the full burden. It discloses the tool is free and 24-hour delayed, which are key behavioral traits. It does not specify output format or any limits, but for a sample tool, these are reasonable omissions. No contradiction with annotations since none exist.

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 a single sentence that is front-loaded with 'FREE' and conveys all essential information: purpose, delay, and nature (taste of paid feed). No wasted words.

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?

Given no output schema, the description does not detail return values, but it mentions 'market regime snapshot,' which gives a general idea. For a simple free sample tool with zero parameters, this is sufficient context. Missing details like data format are minor for this tool's purpose.

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?

There are zero parameters, and schema coverage is 100% (vacuously). According to guidelines, baseline is 4 when no parameters exist. The description adds no param info, but none is needed.

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 the tool provides a free, 24-hour delayed market regime snapshot, distinguishing it from siblings like get_regime_current and get_regime_history by being a sample/taste. It uses specific verb 'get' and resource 'regime sample' with key attributes (free, delayed).

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 this tool is for sampling the paid feed due to its free and delayed nature, but it does not explicitly state when to use this tool versus alternatives. Sibling tools (current, history) are not mentioned; guidance is indirect at best.

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