Activate license

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

With no annotations, the description carries full behavioral burden. It usefully discloses that verification is offline and the license is saved locally, which are meaningful traits. However, it does not disclose what happens on invalid keys, whether activation overwrites an existing license, or what the call returns on success or failure.

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?

One short sentence that front-loads the primary action and object, then adds format and behavior, with zero filler or redundant phrasing.

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?

The tool is simple, and the description covers the core action, key format, and behavioral facts. But with no output schema, it omits what the agent should expect in response and how to handle an invalid or already-activated key, leaving some operational ambiguity.

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 schema already fully describes the single 'key' parameter, so baseline is 3. The description adds the expected key format (MCPL1.xxx.yyy), giving the agent actionable validation guidance beyond the schema's source-of-key description.

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 ('Activate'), the resource ('a Pro license key'), and the required key format. It is distinct from sibling tools because activation is a specific operation not mentioned elsewhere, though it does not explicitly differentiate itself from license_status.

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 when to use it: when the user has a Pro license key from checkout. However, it provides no exclusions or mention of alternatives like license_status for checking current license state, leaving some routing to inference.

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