create-ruleset

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool creates a ruleset, implying a write operation, but doesn't cover critical behaviors: whether this requires specific permissions, if the creation is idempotent, what happens on duplicate names, error conditions, or the format of the response. The mention of 'ring-fencing patterns' adds some context but is vague without explanation.

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 that front-loads the core purpose. It avoids unnecessary words, but could be slightly more structured by explicitly mentioning key parameters or outcomes. Every part earns its place, though it's brief given the tool's complexity.

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's complexity (4 parameters, nested 'rules' object, no output schema, and no annotations), the description is inadequate. It doesn't explain the output, error handling, or behavioral nuances like the impact of 'ring-fencing patterns'. For a creation tool with significant parameter detail, more context is needed to guide effective use.

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 description coverage is 75%, providing good documentation for parameters like 'name', 'description', and 'scopes'. The description adds no additional parameter semantics beyond what's in the schema—it doesn't explain 'ring-fencing patterns' in relation to the parameters or provide usage examples. Since schema coverage is high, the baseline score of 3 is appropriate, but the description doesn't compensate for the remaining 25% gap (e.g., clarifying 'rules' structure).

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 clearly states the action ('Create a ruleset') and the resource ('in the PCE'), and mentions a specific capability ('with support for ring-fencing patterns'). It distinguishes from siblings like 'update-ruleset' or 'delete-ruleset' by specifying creation, but doesn't explicitly differentiate from other creation tools like 'create-iplist' or 'create-label' beyond the resource type.

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. It doesn't mention prerequisites (e.g., needing labels from 'get-labels' as hinted in the schema), when ring-fencing patterns are applicable, or how this differs from other rule-related operations. The agent must infer usage from context alone.

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