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

With no annotations, the description carries the full burden and does well: it discloses the return shape (low/medium/high verdict with reasons), the cost ($0.005 USDC per call) and the payment mechanism (x402 on Base), which is essential pre-call knowledge since it is a paid endpoint. It omits failure behavior (invalid/non-contract address), rate limits, and whether caching or repeated billing applies.

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 compact sentences: purpose and checks first, then the verdict shape, then the price. Every clause carries information an agent needs (scope, output, cost) and there is no filler.

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 no output schema and no annotations, the description must explain both what is checked and what comes back, which it does (verdict plus reasons). Cost and payment path are covered, leaving only edge-case behavior and latency undocumented for a single-call, single-parameter tool.

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?

Only one parameter exists and schema description coverage is 100% ('ERC-20 contract address on Base'), so the schema already does the work. The description corroborates the chain and asset type but adds no format hints or validation rules beyond it, so the baseline 3 applies.

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 ('risk check of an ERC-20 token on Base') and enumerates exactly what is inspected: proxy upgradeability, owner powers, owner supply share, and Uniswap v2/v3 plus Aerodrome liquidity. No sibling tool (cloudprice_*, guard_check, intel_*, macro_*) overlaps this function, so an agent can select it unambiguously.

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?

'before buying' gives a clear trigger context for invoking the tool, and the enumerated checks make the use case concrete. It does not state when not to use it or what to do for non-Base tokens or non-ERC-20 assets, so there is no explicit exclusion guidance.

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