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

No annotations are provided, so the description carries the full burden. It does disclose the shape of the returned data (TVL, vault count, versions, auditors, incidents), which is genuinely useful given there is no output schema, but it says nothing about auth requirements, rate limits, or behavior for unknown/unsupported protocol IDs.

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?

One front-loaded sentence with no filler; the resource is named first and the value proposition follows immediately.

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?

Adequate for a one-parameter read tool with no output schema, since the description previews the return fields. It is still thin on failure modes (invalid protocolId, case sensitivity) and does not explain how this protocol-level view relates to the vault/market tools an agent will likely need next.

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 description coverage is 100% and the single parameter is documented with an explicit ID list plus an alias rule, so the schema already does the heavy lifting. The description adds nothing about the protocolId parameter beyond what the schema states; baseline 3 applies.

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?

States a specific verb ('Get') and resource ('DeFi protocol') and enumerates the returned content (TVL, vault count, versions, auditors, security incidents). It is distinguishable from vault- and market-level siblings, though it never explicitly names an alternative to route against.

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 when-to-use guidance, no prerequisites, and no mention of alternatives such as get_curator_info or list_vaults_with_incidents, which also surface protocol-adjacent security data. The agent must infer the use case from the field list alone.

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