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 add genuinely useful behavioral context: the returns (price, symbol, supply) and the per-call cost of $0.0005 USDC, which matters for agent budgeting. However, it omits error behavior for invalid mints, rate limits, and freshness/latency of the price.

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 the core action and return values, ending with the cost constraint. Nothing is wasted and nothing important is buried.

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 single-parameter lookup with no output schema, the description covers what it returns and what it costs, which is enough to call it correctly. The one gap is price freshness/latency for a financial data tool, which an agent would reasonably want to know.

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% with a single required mintAddress param already documented as base58. The description's 'by mint address' phrasing adds no syntax or format detail beyond the schema, so the 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 and resource ('Get current USD price') and scopes it precisely to 'any Solana token by mint address', which distinguishes it from the generic crypto_price sibling. It stops short of naming the sibling directly, but the Solana/mint-address scoping makes the boundary clear enough.

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?

Usage is implied by the scoping ('Solana token by mint address'), but there is no explicit when-to-use/when-not guidance and no reference to alternatives such as crypto_price or pair_data. An agent can infer the fit but gets no routing help.

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