login

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

With no annotations provided, the description carries full burden but only mentions the outcome ('get authentication token'). It lacks details on behavioral traits such as whether this initiates a user-facing authentication flow, requires user interaction, has rate limits, or affects session state. More context is needed for a mutation tool like login.

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 a single, efficient sentence that front-loads the key information ('Login with Kinde to get authentication token') with zero wasted words. It's appropriately sized for a simple tool.

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 the complexity of an authentication tool with no annotations and no output schema, the description is incomplete. It doesn't explain what the authentication token is used for, how it's returned, or any prerequisites (e.g., needing Kinde credentials). More detail is needed for proper agent use.

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 has 0 parameters, and schema description coverage is 100%, so no parameter documentation is needed. The description appropriately doesn't discuss parameters, earning a baseline 4 for not adding unnecessary information.

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 ('Login with Kinde') and the outcome ('to get authentication token'), which is specific and unambiguous. However, it doesn't explicitly differentiate from sibling tools like 'save_token' or 'logout', which would require a 5.

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 versus alternatives like 'save_token' (which might store tokens) or 'logout' (which might end sessions). The description only states what it does, not when it should be invoked in relation to other tools.

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