get_defi_overview

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

No annotations provided, so description carries full burden. It discloses it returns JSON with market leaders, TVL, and quick stats, and notes it is free. Lacks details on data freshness or rate limits, but sufficient for a no-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?

Description is reasonably concise with 4-5 sentences, covering purpose, usage, and output. Could be slightly more structured (e.g., bullet points for return fields) but is efficient overall.

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 zero parameters and no output schema (though context indicates output schema exists), the description sufficiently explains the output format and content. It fully covers what an agent needs to decide whether to call this tool.

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?

No parameters exist, so description adds no parameter info. Baseline 4 is appropriate since schema coverage is 100% and the description correctly implies no inputs 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 it returns a 'Complete DeFi market snapshot across all categories' and lists specific categories (Yield, Liquid Staking, etc.). It distinguishes itself from sibling category-specific tools by positioning itself as the first call.

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 says 'Use this as a starting point before calling category-specific tools' and mentions it is FREE, guiding the agent to use it to decide which paid tool to call next. This provides clear when-to-use and alternative context.

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