get_market_insights

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

With no annotations, the description carries the full burden. It indicates 'retrieve' implying a read-only operation, but it doesn't disclose any side effects, rate limits, response format, or data source. The description is minimal and doesn't enrich the agent's understanding beyond the basic action.

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, efficient sentence. It's front-loaded with the action verb and contains no unnecessary words. Every word earns its place.

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 relatively simple with two optional parameters and no output schema. The description gives a basic idea of what it does, but it doesn't explain the return structure or how the data might be used. Given the lack of annotations and output schema, the description could be more informative to enable effective use.

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 already describes both parameters (limit and category) with 100% coverage. The description adds no additional meaning about how the parameters affect results, such as how category filters headlines or what limit controls. Since schema coverage is high, baseline 3 is appropriate.

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 a specific action ('Retrieve') and resource ('latest market insights and financial headlines'). It distinguishes from sibling tools like analyze_portfolio or generate_report, which focus on analysis/reporting rather than retrieval. However, it doesn't explicitly differentiate itself, so it's not perfect.

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?

No guidance on when to use this tool versus alternatives. It doesn't mention any prerequisites, exclusions, or scenarios where other tools would be more appropriate. The description simply states the function without context, leaving the agent to infer its use case.

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