invariance_guardrail_update

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

Annotations indicate readOnlyHint=false and destructiveHint=false, but the description adds little beyond restating that a patch occurs. It does not mention idempotency, permissions, whether omitted fields are preserved, or the effect on related monitors. No contradiction with annotations exists, but the description carries a low informational burden.

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 one short sentence with a parenthetical field list, achieving lexical conciseness. However, it under-specifies: the required 'id' is not mentioned, and the parenthetical list is only a partial map to the schema's parameters, reducing the value of that structure.

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?

With four parameters, no output schema, and a large sibling set, the description is insufficient. It does not clarify what each field controls, what response to expect, or how this patch differs from promote and other guardrail operations. The agent would need to infer most usage from the schema and tool names.

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 explain the parameters. It lists mode, status, and monitor_id by name but provides no meaning for these fields in the context of a guardrail, and it omits the required 'id' parameter. The enums in the schema limit values but do not define semantics.

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 uses a specific verb 'Patch' and resource 'guardrail', and enumerates the mutable fields (mode, status, monitor_id), which clearly identifies the operation. However, it does not explicitly name sibling tools like invariance_guardrail_create or invariance_guardrail_promote to aid differentiation.

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 is given on when to use this tool versus the many guardrail-related siblings (create, get, list, promote). The description assumes the agent already knows that 'patch' is the right call, but offers no context, prerequisites, or exclusions.

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