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

With no annotations, the description carries the full behavioral burden, yet it only discloses a quota ('5 free trial calls per signed wallet'). It says nothing about what 'signed wallet' authentication entails, whether the operation is read-only, what data the profile contains, or any rate limits — leaving a lookup tool largely opaque.

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?

It is short and front-loaded, but 'Wallet Intel:' duplicates the tool name and the trailing emoji pricing line is tangential to the tool's function. Size is appropriate; content is thinly spent.

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, no annotations, and 0% parameter documentation, the description should compensate by explaining the profile contents and parameter usage. It does neither, leaving an agent under-informed for even a simple lookup.

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 0% and the description adds nothing about the two parameters. Worse, 'wallet' and 'address' appear to be interchangeable or overlapping, and neither is marked required, so an agent has no basis for choosing which to populate — a real ambiguity the description should have resolved.

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 names the resource (a multi-chain wallet profile) but uses no verb and 'Wallet Intel' merely restates the tool name. It does not distinguish itself from the many sibling wallet tools (x402-wallet, x402-wallet-report, x402-wallet-scan, x402-wallet-balance), so an agent cannot tell what makes this one different.

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?

There is no statement of when to use this tool versus the dozen other wallet tools, nor any prerequisite or exclusion. The only usage-adjacent text is a pricing/quota note ('5 free trial calls'), which does not help an agent decide between alternatives.

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