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

Annotations already carry readOnly/idempotent/non-destructive, yet the description adds real behavior: three data sources for the name (contract getter, Blockscout, Sourcify), an auth-dependent tier ('with a $TOLL holder's Toll key: also…'), and a framing rule ('Facts, never a verdict'). That gating and provenance disclosure is information the agent cannot get from the annotations.

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 core identity and input are front-loaded, and every enumerated field maps to something the tool actually returns, so little is wasted. The weakness is that it is one long run-on sentence with stacked parentheticals, which makes scanning harder than a short structured list would.

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, the description carries the return-value burden and does so thoroughly, including conditional fields and the 24h-scored launch record. What is missing is failure handling: nothing says what happens for a non-hook address, a wrong-chain address, or a hook with no pools.

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?

There is a single parameter and the schema already specifies the format ('0x followed by 40 hex characters') at 100% coverage. The description only restates 'by its contract address' and adds no meaning about the argument beyond the schema, 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+resource+scope: 'One Uniswap v4 hook on Robinhood Chain, by its contract address', then enumerates exactly what comes back (name and its provenance, permission bits, proxy/clone status, pool count, test-sell result). This cleanly separates it from siblings like check_coin, check_tx and check_agent, which address different entities.

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?

Use is only implied: you have a hook contract address on Robinhood Chain and want facts about it. The scope constraint 'Robinhood Chain only' is a useful boundary, and the note that extra measured fields need a $TOLL holder's Toll key tells the agent about a conditional. But there is no explicit when-to-use/when-not or named alternative (e.g. check_coin for the token side, presign_risk_report for a scored verdict).

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