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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=true, so safety/idempotency are covered. The description adds only 'Returns sorted list' (return-shape nod) and 'EVM only', both of which are already implied by the output schema and chain enum. Modest added value, so a 3.

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?

Three short sentences, front-loaded with purpose then return shape then constraint; nothing is padded. The only blemish is the stray 'and price' claim, which consumes space without corresponding to any parameter.

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?

With an output schema present, return values need not be explained, and the three params are fully covered. What remains thin is any usage context distinguishing this screener from the many adjacent token.* tools, plus the unsupported price mention. Adequate but with clear gaps.

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 chain, limit and maxRisk are fully documented in the schema including the 'lower = safer' hint. The description adds no parameter semantics and instead references a nonexistent price filter, so 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?

States a specific verb+resource ('Screen tokens') and describes the return ('sorted list of tokens matching criteria'), which is clear on its own. However, it claims screening 'by risk score and price' while the schema exposes no price parameter, so the stated capability is partly inaccurate. It also doesn't name any sibling (token.risk, token.trending) for differentiation.

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 and no alternatives named despite several overlapping siblings (token.risk, token.trending, token.price). The only scoping is a bare 'EVM only' constraint, which duplicates the chain enum rather than routing the agent between tools.

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