init_session

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

No annotations provided, but the description fails to disclose behavioral traits such as idempotency, state mutation, or required authentication, leaving the agent without critical execution 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?

Single sentence is maximally concise and front-loaded. Every word is necessary and adds value, no redundancy.

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?

Despite simple signature, the concept of a session requires explanation of lifecycle (e.g., how to use the session in subsequent tools). Description is insufficient for an agent to understand the tool's role in a workflow.

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?

Schema covers the single parameter with description 'Target URL or domain', achieving 100% coverage. Description adds no extra parameter meaning, justifying baseline score.

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?

Description uses specific verb-resource pair 'initialize new security assessment session', clearly indicating the tool's role as a setup action. However, it does not differentiate from sibling tools or clarify the session concept.

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 initialize a session, preconditions, or alternatives. Agent receives no context for tool selection among siblings.

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