init

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

With no annotations provided, the description carries full burden for behavioral disclosure. 'Initialize' implies a setup or preparation action, but it doesn't specify what initialization entails (e.g., loading libraries, setting up audio context, resetting state), whether it's idempotent, or what happens on failure. This leaves significant gaps for a tool with potential side effects.

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, efficient sentence with zero wasted words. It's front-loaded with the core action and target, making it immediately understandable without unnecessary elaboration.

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 the tool has 0 parameters, no annotations, and no output schema, the description is minimally adequate. It states what the tool does but lacks details on behavior, output, or integration with siblings. For a potentially state-changing initialization tool, more context would be helpful, but it meets the bare minimum.

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 has 0 parameters with 100% schema description coverage, so the schema fully documents the lack of inputs. The description doesn't need to compensate for any parameter gaps, and it correctly implies no required inputs by not mentioning any. A baseline of 4 is appropriate since there's nothing to explain beyond what the schema already shows.

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 'Initialize Strudel in browser' clearly states the action (initialize) and target (Strudel in browser), providing a specific verb+resource combination. However, it doesn't differentiate from sibling tools like 'load' or 'start' which might have overlapping initialization concepts, so it doesn't reach the highest score.

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 no guidance on when to use this tool versus alternatives. There's no mention of prerequisites (e.g., whether it should be called first), exclusions, or comparisons to siblings like 'load' or 'play' that might handle initialization differently.

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