interactive_login

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

With no annotations, the description carries the full burden. It does disclose a real behavioral trait beyond the empty schema: this is interactive, opens a browser, and requires manual user action, which matters for MFA. However it says nothing about what happens after login (whether a session is persisted, whether the call blocks, timeouts, or what the caller must do next).

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?

A single front-loaded sentence that states the action, the target, and the motivating condition with zero waste.

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?

For a zero-param tool with no output schema the description is nearly sufficient, but given the sibling set_session_cookie it should explain the relationship (does this establish the session used by the other tools?) and the expected post-login flow. That connective information is missing.

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 takes zero parameters and schema coverage is 100%, so there is nothing for the description to clarify; baseline 4 applies.

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?

States a specific verb+resource: it opens a browser window so the user can manually log in to SLIIT Courseweb. That clearly distinguishes it from siblings like set_session_cookie or scrape_page, though it never names the sibling it complements.

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 parenthetical '(useful for MFA)' implies the situation that calls for this tool, but there is no explicit when-to-use/when-not guidance and no named alternative (e.g., when a non-interactive cookie/session path is preferred).

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