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

Annotations already indicate readOnlyHint=true, and the description adds useful behavioral context: the result is random and returned as a 'labeled strategy card.' It also frames the intended outcome ('shift your perspective and break through blocks'), which goes beyond the structured data. The phrase 'make destructive moves' is clearly metaphorical herealert but not a contradiction.

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 concise and front-loaded with the core action, but contains some redundancy between 'Best for injecting energy and unpredictability' and the later 'Use this when' list. Slightly tighter phrasing would improve it.

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-parameter, read-only tool, the description fully covers what the tool does, when to use it, and what it returns. Nothing critical is missing for an agent to invoke it correctly without an output schema.

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 zero parameters and schema description coverage is 100%, so there is no parameter ambiguity. The description still usefully mentions 'random' and the returned card, satisfying the baseline for a no-parameter tool.

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 states 'Get a random Disrupt strategy' with a specific verb and resource, and clearly distinguishes it from siblings by naming the 'Disrupt' category. The purpose is immediately identifiable.

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?

Provides explicit use cases: 'when stuck in safe patterns, avoiding risk, or when work feels too polished or predictable,' and a direct 'Use this when' list. This makes it easy for an agent to decide when to invoke this tool versus the other sideways category tools.

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