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 that results are unvetted/spam-prone, that liquidity is only returned 'where readable' (partial-data caveat), and that the call costs $0.01 USDC on Base via x402 — a payment requirement an agent must know before invoking. It omits failure behavior on payment and rate limits, so not a 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?

Front-loads the core purpose and keeps to roughly three sentences with no filler. The middle sentence is a long run-on field list, but every clause is informative rather than redundant.

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?

No output schema exists, and the description compensates by enumerating returned fields (tokens, symbols, decimals, fee tier, v4 hooks, quote-asset pairing, liquidity). Combined with the payment and spam disclaimers, an agent has enough to call it correctly; a response-shape description would have made it complete.

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%, and the schema documents both `limit` and `minutes` with ranges and defaults, so baseline is 3. The description's 'last N minutes' only echoes the schema and adds no new format or edge-case detail.

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 ('New trading pools created on Ethereum in the last N minutes'), enumerates the venues (Uniswap v4, v3) and the returned fields. The Ethereum + Uniswap scoping clearly separates it from the many sibling *_new_pools tools that cover other chains.

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 only implied by the chain and venue scoping; there is no explicit statement of when to choose this over arbitrum_new_pools, base_new_pools, etc., nor any prerequisite or exclusion guidance. The spam warning hints at a caveat but is not usage direction.

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