Start Modellix API Key Setup

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

Annotations are all false (no hints), so the description carries the burden. It discloses that the tool creates a 'short-lived loopback form,' validates and stores the key, and emphasizes 'The key is never a tool argument.' This goes beyond the empty annotations and gives important safety-relevant behavior. It does not mention all potential side effects (e.g., file system changes), but it provides meaningful context.

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 only two sentences, yet it packs the core action, a prerequisite URL, and a critical safety constraint. It is front-loaded with the primary action and contains no filler. Every sentence earns its place, making it highly 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?

While the description defines the tool's mechanics, it lacks explicit context about when to invoke it relative to other Modellix tools (e.g., 'run before any canvas task') and what the agent should do after the loopback form is created (e.g., interactive steps). An output schema exists, so return values are covered, but the overall workflow context is incomplete.

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 input schema has one parameter 'language' with an enum, but no description. The tool description does not mention this parameter at all, and schema description coverage is 0%. Thus, the agent receives no guidance on what values mean or how to choose them. Since the parameter is optional and simple, this is a moderate gap but still a failure to clarify parameter semantics.

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's function: 'Create a short-lived loopback form that validates and stores a Modellix API key through the installed CLI dependency.' This uses a specific verb and resource, and the added note 'The key is never a tool argument' further clarifies its unique behavior. It is easily distinguished from sibling tools, which all focus on canvas operations.

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 provides a clear prerequisite: 'Create a production key at https://www.modellix.ai/console/api-key.' It also implicitly indicates when to use this tool (for API key setup) by its name and content, and explicitly warns against passing the key as an argument. However, it does not explicitly contrast with alternatives or state when not to use it, though the sibling set makes the distinction obvious.

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