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

Annotations only declare readOnlyHint and openWorldHint, so the description adds real value: it discloses the data source (PoolCreated events), the fixed price of 0.0050 USDC per call, that it is 'premium: always paid' (cost incurred even on empty results), and the trust caveat about new pools. It stops short of describing latency or result-volume behavior.

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, all front-loaded: what it returns, the critical trust warning, then cost. Every sentence earns its place with no redundancy.

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?

There is no output schema, and the description does name the return fields (token symbols, fee tier, block), the data source, and the cost model, which is sufficient to call it correctly. It leaves pagination/window behavior details to the schema, which documents them adequately.

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% with both parameters (limit 1-30, windowBlocks 50-3000) fully documented in the schema. The description adds no extra meaning about these parameters, 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?

It states a specific verb and resource — newest Uniswap v3 pools created on Base via PoolCreated events — plus the returned fields (token symbols, fee tier, block). This clearly distinguishes it from siblings like token-due-diligence or liquidity-health.

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 caveat 'A new pool does not imply a legitimate token' implies when this tool is appropriate and warns against naive use, but no alternative tool is named and no explicit when-to-use/when-not guidance is given. Usage is implied rather than stated.

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