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

With no annotations, the description must carry the burden, and it does add real value: it discloses the ranking rules ('match quality then TVL'), the returned fields, and the data provenance. It still omits what happens when no candidate matches, any rate limits, and auth requirements, so it is only moderately transparent.

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?

Four short sentences with the core resolution behavior front-loaded; each sentence carries information. The 'Data by DefiLlama. Not financial advice.' boilerplate is the only arguable padding but is standard attribution.

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?

For a simple two-parameter lookup with no output schema, the description does well by enumerating the return fields (slug, name, category, chains, TVL) and the ranking. Remaining gaps are minor: no note on the empty-result case and no tie-in to the protocol_brief sibling.

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%, so both 'query' and 'limit' are already documented in the schema, making 3 the baseline. The description's 'partial name' phrasing and ranking note add only marginal meaning beyond the schema and do not explain the limit behavior further.

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 states a specific verb and resource ('Resolves a protocol name or partial name to candidate DefiLlama slugs') and gives the ranking criteria, so an agent immediately knows this is a name-to-slug resolver. It does not, however, explicitly contrast itself with the sibling protocol_brief, so it falls short of a 5.

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?

There is no explicit when-to-use or when-not-to-use guidance, and no mention of the sibling tool protocol_brief or of a resolution-then-brief workflow. The lookup role is only faintly implied by 'resolves ... to candidate slugs', and the multi-candidate return hints disambiguation is needed but is not stated as guidance.

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