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

With no annotations provided, the description carries the full transparency burden and does disclose important traits: per-call cost, x402/API-key auth requirements, liquidity/volume gating, wash-trade filtering, and an educational-data disclaimer. It omits rate limits, error behavior, and data freshness, but still adds substantial behavioral context.

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 main purpose is front-loaded, and the payment/auth details are relevant for actual usage. The description is somewhat dense and long, but every clause contributes useful operational information without filler or repetition.

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 one-parameter data tool with no output schema or annotations, this description is largely complete: it covers purpose, chain options, returned metrics, data-quality filtering, cost, authentication, and a catalog pointer. Minor gaps remain around response format or pagination, but the simple tool scope makes this adequate.

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?

The schema gives chain a default but no description or enum, so the description compensates by explicitly enumerating the allowed values (solana|base|bsc|ethereum) and clarifying single-chain usage. This adds real meaning beyond the schema for the only parameter.

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 identifies the tool as retrieving memecoin movers for specified chains, listing output categories (gainers, losers, volume leaders) and metrics (price, liquidity, 24h stats). It distinguishes itself from the large sibling set by its memecoin-specific and chain-gated focus.

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 description provides practical context such as chain choices, payment/auth methods, and a pointer to get_catalog for browsing tools. However, it does not explicitly state when to prefer this tool over alternatives or when not to use it, so usage guidance remains implied rather than explicit.

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