login

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

No annotations are provided, so the description carries full responsibility for behavioral disclosure. It only says 'log into' and does not mention side effects such as changing session state, whether the browser must be running, or what happens on failure. This is insufficient for a state-changing tool.

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, front-loaded sentence with no filler or repetition. It conveys the essential information immediately and nothing more.

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 description is inadequate for correct invocation in a multi-tool environment. It omits that a browser likely must be launched first (sibling launch_browser), that login changes authentication state, and that verification can be done via check_login_status. There is also no output schema, and the return behavior (success/failure) is not disclosed.

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 already describes both parameters with clear meanings ('UpGrad account email address' and 'UpGrad account password'), yielding 100% coverage. The description simply repeats 'email and password' without adding additional semantic context, so baseline 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 is clear and specific: 'Log into UpGrad LXP with email and password' names the verb, the resource, and the authentication method. It is distinct from sibling 'check_login_status', which verifies whether a login exists.

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 on when to use this tool, prerequisites (e.g., launch_browser), or alternatives like check_login_status. The agent must infer that login likely requires a browser session and that login status can be checked afterward.

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