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

Annotations only declare this is a non-destructive mutation in a closed world. The description adds the key operational detail the annotations omit: it requires a bearer token with scope 'post'. It does not, however, describe what the returned code looks like or how expiry/uses actually behave at runtime.

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 with zero filler, ordered usefully (what it is, when to mint, auth prerequisite). Could be marginally better front-loaded with the minting verb, but nothing is wasted.

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 two-optional-parameter mutation with no output schema, the description covers purpose, timing, and the auth scope needed to call it. It omits any notion of code lifetime semantics and the return shape, but the coverage is adequate for the tool's complexity.

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 both optional parameters (days, uses) with their ranges and defaults are already documented. The description adds no syntax or meaning about them, so the baseline of 3 is appropriate.

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 conveys the output (a link code that reconnects an app) and implies the action via 'Mint one', so the verb+resource is recoverable. It is reasonably distinct from siblings like finish_signup and write_memory, though the leading noun phrase is slightly more about the artifact than the action.

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 a concrete trigger: mint one before the human disconnects or switches apps. That is clear when-to-use guidance, but no alternative tool or when-not condition is named, so it stops short of full routing.

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