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

With no annotations, the description carries the full burden of behavioral disclosure. It discloses idempotency, the one-per-account constraint, the returned Solana address, and the need to fund the wallet with USDC. It does not mention auth requirements or failure modes, but for an idempotent creation call these are minor gaps.

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 two concise sentences with no filler. It front-loads the primary action and constraint, then gives the return value and practical funding purpose. Every sentence contributes useful information.

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?

For a simple, idempotent creation tool with no output schema and no annotations, the description is mostly complete: it states the result, return value, uniqueness constraint, and follow-up funding need. It does not state prerequisites such as account existence, but 'one per account' implies the account context and the optional auth_token is covered by the schema.

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 fully documents the optional auth_token parameter, and the description adds no parameter-specific meaning. Baseline 3 applies because the schema does the heavy lifting.

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 uses a specific verb and resource: 'Create your managed agent wallet.' It clarifies scope with 'one per account', notes idempotency, states the returned value ('Solana address'), and its purpose ('pay for the paid tools'). This clearly distinguishes it from siblings like get_agent_wallet and agent_wallet_transfer.

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 description gives clear context: create a wallet before using paid tools, one per account, and idempotent behavior if called again. It does not explicitly name alternative tools or state when not to use it, but the context is specific enough that callers know the intended scenario.

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