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 indicates a write/mutation operation ('Mint') but does not disclose permissions, reversibility, whether the cap is enforced automatically, or side effects on the parent token. This leaves significant behavioral ambiguity.

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 a single, well-structured sentence with no filler. It front-loads the core action ('Mint') and key attribute ('spend-capped'), making it efficient and easy to parse.

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 tool with no annotations, no output schema, and incomplete parameter descriptions, this description is too brief. It fails to explain what the token enables, how it is used by a sub-agent, or what the optional parameters do, leaving essential context missing.

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 only 33% (cap_usd is described as 'hard spend cap'), while days and label have empty descriptions. The description does not elaborate on these parameters or how they relate to the spend-capped token, failing to compensate for the low schema coverage.

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 the specific verb 'Mint' and clearly identifies the resource as a 'child token' with the key attribute 'spend-capped' and purpose 'for a sub-agent.' This distinguishes it from sibling create_* tools like create_vault or create_drip, which target different resource types.

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 implies the tool is for creating a token for sub-agents but provides no explicit guidance on when to use it versus alternatives or any prerequisites/exclusions. It is not misleading, but the usage context is only implied rather than stated.

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