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

Annotations declare readOnlyHint=true and idempotentHint=false; the description corroborates the non-idempotency ('Calling again generates different credentials, not recovery') and adds genuinely new context: the credentials must be saved because they cannot be retrieved later. That is real value beyond the annotation set, though it says nothing about entropy/format guarantees or whether anything is persisted server-side.

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?

Three tight sentences, front-loaded with the core action, then the save-before-submission constraint, then the non-recovery caveat. Every sentence carries distinct, actionable information with no filler.

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, the description must convey the return payload, and it does — a private token and a submission key. Combined with the non-persistence and non-recovery notes, an agent has everything needed to call this correctly and handle the result.

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?

The tool takes zero parameters, so there is nothing for the description to disambiguate; baseline for a 0-parameter schema is 4. The text correctly implies no inputs are required.

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?

Specific verb+resource: 'Generate a cryptographically random private token and submission key for ONE new task.' It also preempts the most likely confusion with the sibling submit_task by stating 'this does not create a task,' so an agent can distinguish it without opening a schema.

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?

Clear sequencing guidance ('Save both securely before submission') implies it belongs before submit_task, and it explicitly warns that calling again produces different credentials rather than recovering prior ones. It stops short of naming an alternative tool or stating when-not-to-use it, so it is strong context rather than full routing.

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