login

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

No annotations are provided, so the description carries the burden of behavioral disclosure. It discloses a key security behavior: password is never passed as a parameter and stays in env vars only. It also implies token-based session expiration. While it doesn't describe failure modes or session state details, this is adequate for a login 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?

Three concise, front-loaded sentences with no redundancy. Each sentence serves a purpose: what it does, how it handles credentials, and when to call it. Excellent use of space for a distinct and 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?

For a simple login tool with no output schema and one optional parameter, the description is complete. It explains the authentication method, environment variable dependency, and call timing. It adequately covers the tool's use within the broader task management context.

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 schema already describes the single parameter with 100% coverage, stating that email reads from env var if omitted. The description reinforces this and additionally clarifies that password is never a parameter, which is not present in the schema. This adds meaningful security context beyond the structured field.

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 states the tool's core function with a specific verb ('Authenticate') and resource ('TaskLogger'). It clearly distinguishes this tool from task-related siblings by focusing on authentication and credential handling. The use of environment variables is explicit, leaving no ambiguity about what the tool does.

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 explicit timing guidance: call 'after setting env vars or when tokens expire.' This tells the agent when to use the tool, though it does not explicitly mention when not to use it or name alternative tools. The context is sufficiently clear for a login tool among task-operation siblings.

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