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

No annotations are provided, so the description must fully disclose behavior. It only mentions the data source (DeFiLlama) but does not specify output format, whether it is real-time or cached, or any limitations. For a simple zero-param tool, more detail like 'Returns the current TVL in USD' would improve transparency.

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 concise with a single sentence, but it could be slightly more informative without adding length. It is front-loaded but somewhat ambiguous (e.g., 'Total Value Locked on Flare' could be interpreted as a single value or a collection).

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 and no parameters, the description should clarify what the returned data looks like (e.g., a numeric value, a formatted string). It fails to do so, leaving the agent to guess the output format.

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 no parameters, so the baseline is 4. The description does not add detail beyond the empty schema, but for a parameterless tool, this is acceptable.

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 provides 'Total Value Locked on Flare from DeFiLlama', specifying both the metric (TVL) and the data source. This distinguishes it from sibling tools like flr_price or flr_staking_info.

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 explicit guidance on when to use this tool versus alternatives, but the name and description imply it is for querying TVL data. There are no sibling tools with overlapping purpose, so confusion is minimal.

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