Upgrade Plan

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

With no annotations, the description must fully cover behavioral traits. It only states it opens a browser page, but does not disclose if this is synchronous, if user interaction is required, what happens after opening, any authentication needs, or side effects. Minimal disclosure beyond the core action.

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 sentences, front-loaded with the main action, and includes relevant plan details. No wasted words, efficient and clear.

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?

Given zero parameters, no output schema, and no annotations, the description is relatively complete. However, it lacks information on prerequisites (e.g., logged in), behavior after opening page (e.g., no user interaction?), and whether the tool actually performs the upgrade or just navigates. Adequate but could be more thorough.

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?

There are zero parameters, so no parameter info is needed. The description provides context about plan options and credit limits, which adds value beyond the empty schema. Baseline for 0 params is 4.

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 tool opens the GlassyPic pricing page for upgrading plans. It specifically mentions the action of opening a browser page, making it distinct from sibling tools which are about login, logout, image optimization, and 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?

No guidance is provided on when to use this tool vs alternatives. It does not mention prerequisites like being logged in, nor does it suggest when not to use it (e.g., if user wants to directly upgrade). Implied usage is simply when user wants to upgrade.

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