create_session_tool

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

No annotations are provided, so the description carries the full burden for behavioral transparency. It states that a session is created and describes what the brief must contain, but it does not disclose side effects, persistence, return values, idempotency, or any state transition consequences. For a mutation-style tool with zero annotation coverage, this is a significant gap.

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 two sentences with no filler. The primary action is front-loaded, and the second sentence efficiently lists the only parameter details that need elaboration. Every word earns its place.

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 seven parameters, a nested brief object, no annotations, and no output schema, this description is too thin to fully prepare an agent. It explains the brief but omits what the tool returns after creation, what optional parameters mean, and when to choose this tool over siblings. The brief guidance helps, but the overall calling context remains incomplete.

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 description coverage is 0%, so the description must compensate for undocumented parameters. It adds genuinely useful meaning for the brief object by naming required fields like problem_space, target_segments, success_criteria, and risk_tolerance. However, it leaves mode, seed, panel_size, gate_policy, and total_token_budget unexplained beyond their default values and types, so compensation is only partial.

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 begins with a specific verb and resource: 'Create a Design Thinking session.' This clearly differentiates the tool from siblings like run_session, step_session, stop_session, and list_sessions_tool, since it is the create operation in the session lifecycle. No ambiguity remains about the tool's primary purpose.

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 implicitly conveys when to use this tool: when a new Design Thinking session needs to be created, before running or stepping it. It also provides required brief fields, giving practical setup guidance. However, it never explicitly states alternatives or exclusions, such as 'use run_session instead when a session already exists.'

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