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

Discloses that it returns top-N relevant tools with full schemas and examples, and that results are 'ready to call directly, no second schema lookup needed'. This adds value beyond annotations (readOnly, idempotent) by describing the return format and immediate usability.

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 front-loaded with purpose and domain list, then details return format and usage. It's somewhat long but every sentence adds value. Could be slightly more concise but still effective.

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?

Despite no output schema, the description explains the return format (names, descriptions, schemas with examples). It provides sufficient context for a discovery tool with many siblings and parameters. The usage guidance is complete.

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 coverage is 100% with all parameters described. The description reiterates aliases but doesn't add significant new meaning. However, it mentions 'top-N' and limit, which is helpful. 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 it finds tools by describing the data or task, lists many example domains (SEC filings, financials, FDA drugs, etc.), and distinguishes itself from sibling tools by being the discovery tool for the entire toolset.

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?

Explicitly advises to 'Call this FIRST when you have many tools available and want to see the option set'. Provides clear context for when to use it, though it doesn't explicitly list when NOT to use it, which is acceptable given the clarity of purpose.

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