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

Annotations already declare readOnlyHint and openWorldHint, so the description's added value is the pricing and payment mechanics ($0.005 USDC per call via x402 with a payment URL), which an agent cannot infer from structured fields. It also notes the data is real-time ('right now'). Return format and pagination are not described, keeping it below 5.

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?

Two sentences with the core purpose front-loaded and the pricing parenthetical last, which is appropriate placement. The payment URL is somewhat bulky but earns its place as cost/auth information.

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 two-optional-parameter read-only listing with no output schema, the description covers what the data is, its recency, the optional filter, and the payment requirement. Only the shape of the returned list is unspecified, a minor gap.

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 coverage is 100%, so both parameters are already documented, including the payment/free-trial nuance. The description reinforces the optional chain filter, adding marginal clarity but no new syntax or semantics beyond the schema.

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 resource and a precise data source: 'Tokens with the most active DexScreener boosts right now.' The 'boosts' concept is distinctive enough to separate it from siblings like token_price, token_pairs, and token_new_profiles, though no sibling is named explicitly.

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?

The phrase 'optionally filtered by chain' gives minimal usage context, but there is no explicit when-to-use versus token_new_profiles or token_search, and no exclusions. Usage is implied by the description of the data rather than stated.

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