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

Annotations already cover the safety profile (readOnly, non-destructive, closed-world). The description adds real behavioral context beyond them: that statutorily-open and practically-closed positions are never merged, that account opening is at each bank's unilateral discretion with no guarantee, and that CRS/FATCA transparency always applies. That is substantive disclosure the annotations cannot carry.

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 front-loaded: the resource and its two profiles come first, then the content inventory, then the parameter switch, then disclaimers. Dense but every clause carries information; the heavy all-caps styling is noisy and mildly impairs scanning, which keeps it short of a 5.

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?

An output schema exists, so return structure need not be explained. The description covers scope, the two resident profiles, the statutory/practical split, and the no-guarantee caveat, leaving little an agent needs missing. Only the relationship to the adjacent get_banking_access tool is unaddressed.

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 coverage is 100%, so the schema already documents cc. The description nonetheless adds meaning the schema does not: passing cc scopes to one jurisdiction, while omitting it returns the covered-country list. That optional-parameter behavior is useful and not obvious from the schema alone.

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 ('BANK-ACCOUNT ACCESS for FOREIGN NON-RESIDENTS in a jurisdiction') and enumerates the substantive content it returns (statutory vs practical position, KYC set, remote opening, minimums, CRS/FATCA). It is clearly scoped to non-residents, which implicitly distinguishes it from the sibling get_banking_access, though that sibling is never named.

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?

It gives operational parameter guidance ('Pass cc for one jurisdiction; omit for the covered list') which is genuinely useful. However, it never states when to prefer this tool over the directly competing sibling get_banking_access, nor any prerequisites, so usage is implied rather than explicit.

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