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

With no annotations, the description carries the full burden and does a reasonable job: it discloses the $0.02 USDC cost, states that labeled exchange hot wallets are not used as a cluster, and says the return includes plain-language sybil risk reasons. It stops short of describing read-only behavior, rate limits, or error conditions, but the pricing and exclusion rules are useful behavioral context.

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 description is front-loaded with the primary action, then adds only the details that matter: the CEX exclusion, the optional peers behavior, and the cost. Every sentence earns its place with no redundant restatement of the tool name.

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 no annotations, so the description needs to carry the explanatory burden. It covers the main workflow, the return concept (cluster id plus risk reasons), one important exclusion, the peer comparison limit, and the price, which is largely sufficient for a two-parameter analysis tool. Minor gaps remain around output shape and operational constraints.

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%, so the schema already documents that address is a Solana wallet address and peers is a comma-separated list of up to 8 wallets. The description's mention of 'Optional peers compares up to 8 other wallets' largely repeats the schema, so 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?

The description gives a specific verb and resource: it finds a wallet's first SOL funder, flags shared funders or CEX deposit addresses, and returns a cluster id with sybil risk reasons. That is far clearer than a generic wallet lookup, but it does not explicitly distinguish itself from the sibling wallet_profile tool, which likely also analyzes wallets.

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 use case is implied through terms like 'sybil risk reasons' and 'cluster id,' and the peers parameter is described as comparing other wallets. However, the description never states when to choose this over wallet_profile or other siblings, nor does it list exclusions or prerequisites.

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