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create_business_rule

Create a business rule in ServiceNow to automate server-side JavaScript logic on table operations (before, after, async, display).

Instructions

Create a new business rule (requires SCRIPTING_ENABLED=true). ServiceNow supports ES2021 async/await in scripts.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYesRule name
whenYes"before" | "after" | "async" | "display"
orderNoExecution order (default: 100)
tableYesTable this rule applies to
activeNoWhether to activate the rule (default: true)
scriptYesServer-side JavaScript. ServiceNow supports ES2021 (async/await, ?., ??).
conditionNoOptional condition script
Behavior3/5

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

Annotations indicate write operation (readOnlyHint=false) with potential side effects (openWorldHint=true). The description adds the prerequisite and ES2021 support, which provides some behavioral context beyond annotations but does not fully disclose side effects or result behavior.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is very concise, consisting of two sentences that deliver key information without unnecessary words. It effectively front-loads the purpose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has 7 parameters and no output schema, the description is relatively sparse. It covers the main action and a prerequisite but does not explain return values or confirm what happens on success. Schema fills some gaps but completeness could be improved.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so all parameters have descriptions. The description does not add additional meaning beyond the schema, except for the ES2021 note which is already in the script parameter description. Baseline score of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'create' and resource 'business rule', and adds a prerequisite (SCRIPTING_ENABLED=true). It also provides a capability note (ES2021 support). It distinguishes itself from siblings like get_business_rule and update_business_rule.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description mentions a prerequisite (SCRIPTING_ENABLED=true) which indicates when to use, but does not explicitly state when not to use or provide alternatives (e.g., update_business_rule for modifications). Guidance is minimal.

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

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