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

With no annotations, the description carries the behavioral burden. It discloses the prerequisite nature and attempts to mention fees ('Blockchains either charge a fee or wit'), but the sentence is truncated and incomplete. It does not cover reversibility or what happens if already opted in.

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 repeats the same purpose in two consecutive sentences, and the fee sentence is cut off mid-phrase. While the @param section is structured, the redundancy and truncation reduce clarity and hinder scanning.

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?

Given the moderate complexity and absence of annotations, the description covers purpose, context, fee mention, all parameters, and return type. However, the truncation and lack of error handling or failure behavior leave gaps. An output schema exists but its content is not visible.

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 0%, so the @param documentation in the description is essential. It adds meaningful context: account_fk is a database ID not an address and may not be 0, and asset_id can be looked up via /crypto/digitalassets. This goes beyond the raw schema.

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 clearly states the action: 'Opts the blockchain wallet into a digital asset (token)' with a specific verb and resource. It is distinct from related tools like optout, but does not explicitly differentiate from siblings.

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?

Provides clear context: 'This is typically required to be performed before the blockchain wallet will accept or hold this digital asset.' Also instructs to confirm yes/no before executing. However, it does not mention when not to use or alternatives.

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