Version: Latest (4.6.0)

Now Assist Skills Guide

Create and configure Now Assist Skills using the NowAssistSkillConfig API in the Fluent SDK. Skills use configured prompts to generate AI responses from an LLM, optionally enriched by inputs and tools (script, inline script, web search, subflows, flow actions, decision branches). This guide covers the full lifecycle: provider/model selection, input configuration, tool wiring, prompt authoring, security controls, and deployment. Requires SDK 4.6.0 or higher.

When to Use

Creating or modifying Now Assist Skills using NowAssistSkillConfig
Adding or modifying skill prompts, inputs, or security controls
Adding or modifying skill tools (script, inline script, web search, subflows, flow actions, skill-as-tool, decision branches)
Configuring skill deployment to UI Actions, Flow Actions, or Now Assist Panel

Skill Structure

NowAssistSkillConfig(Arg 1: SkillDefinition, Arg 2: SkillPromptConfig)

API Structure

import { NowAssistSkillConfig } from '@servicenow/sdk/core'

NowAssistSkillConfig(
    // Arg 1: SkillDefinition
    {
        $id: Now.ID['skill_name'],
        name: string,
        description?: string,
        shortDescription?: string,
        inputs?: InputAttribute[],
        outputs?: OutputAttribute[],  // optional — 5 standard outputs auto-generated if omitted
        tools?: (t: ToolGraphBuilder) => ToolHandles | void,
        securityControls: SecurityControls,      // MANDATORY
        skillSettings?: SkillSettings,
        deploymentSettings?: DeploymentSettings
    },
    // Arg 2: SkillPromptConfig
    {
        providers: [{
            provider: 'Now LLM Service' | 'Azure OpenAI' | 'Open AI' | string,
            providerAPI?: { type: 'sys_hub_flow', id: string },
            prompts: [{
                name: string,
                versions: [{
                    $id: Now.ID['prompt_v1'],
                    model: string,
                    temperature?: number,
                    maxTokens?: number,
                    promptState: 'draft',
                    prompt: string | ((p: PromptBuilder) => string),
                    filterCondition?: { [inputName: string]: string }
                }]
            }]
        }]
    }
)

Provider and Model Configuration

The GenAI configuration follows a 3-level hierarchy: Provider -> Provider API -> Model.

Query Steps

Query sys_gen_ai_provider for provider display names
Query sys_generative_ai_provider_mapping with external=true^active=true for Provider APIs
Query sys_generative_ai_model_config for each mapping with provider=<mapping_sys_id>^active=true

Key Field Mappings

What You Need	Table	Column	Code Property
Provider name	`sys_generative_ai_provider_mapping`	`provider` (display)	`provider` key
Provider API flow	`sys_generative_ai_provider_mapping`	`provider_implementation`	`providerAPI.id`
Model identifier	`sys_generative_ai_model_config`	`model`	`model`

Default Recommendation

Use Now LLM Service with Now LLM Generic provider API and llm_generic_small_v2 model.

Code Example

providers: [{
    provider: 'Now LLM Service',
    providerAPI: {
        type: 'sys_hub_flow',
        id: '<provider_implementation_sys_id>'
    },
    prompts: p => ({
        model: 'llm_generic_small_v2',
        // prompt config
    })
}]

Known Providers

'Now LLM Service', 'Azure OpenAI', 'Open AI', 'Google Gemini', 'AWS Claude', 'IBM Watson', 'Perplexity', 'Aleph Alpha', 'Custom LLM Provider'

Input Attributes

Property	Required	Description
`$id`	Yes	Unique identifier
`name`	Yes	Attribute name (must not contain underscores or special characters)
`description`	No	Description of the input attribute
`dataType`	Yes	`'string'`, `'numeric'`, `'boolean'`, `'glide_record'`, `'simple_array'`, `'json_object'`, `'json_array'`
`mandatory`	No	Whether input is required (default: `false`)
`truncate`	No	Whether to truncate the value (only valid for: `string`, `numeric`, `boolean`, `glide_record`; NOT supported for: `simple_array`, `json_object`, `json_array`)
`testValues`	No	Values for testing and validation
`tableName`	Conditional	Required when using `glide_record` dataType
`tableSysId`	Conditional	Required when `testValues` is provided for `glide_record` type

Constraint: A skill can have at most one input of type glide_record.

Name conversion: "Incident Number" becomes {{incident_number}} in prompts.

glide_record vs Tools

Use glide_record input (preferred) when:

Single table query
No calculations or transformations needed
No tools need access to the record data

Use tools with string input type when:

Multiple tables or joins needed
Calculations or transformations required
Record data needed inside a tool script

Critical: glide_record inputs are NOT accessible inside tools. They can only be referenced in prompts via p.input.recordName.fieldName.

Output Attributes

Do NOT define custom outputs. The platform automatically creates five default outputs: response, confidence, explanation, metadata, citations. Reference them in prompts with ${p.output.response}.

Tool Configuration

Tool Methods

Method	Purpose
`t.Script()`	Reference Script Include
`t.InlineScript()`	Inline script function
`t.WebSearch()`	Web search (AI answers)
`t.Skill()`	Call another skill
`t.Subflow()`	Execute Flow Designer subflow
`t.FlowAction()`	Execute Flow Designer action
`t.Decision()`	Conditional branching

Output Access in Prompts

Tool Type	Access Pattern
`t.Script()` / `t.InlineScript()`	`${p.tool.ToolName.output}`
`t.WebSearch()` / `t.Skill()`	`${p.tool.ToolName.response}`
`t.FlowAction()` / `t.Subflow()`	`${p.tool.ToolName.outputName}`

Required Identifiers

Every tool needs a $id. Some tools need additional identifiers depending on how they integrate with the platform:

Tool Type	`$id`	`$capabilityId`	`output.$id`	Per-input `$id`	Per-output `$id`
`t.InlineScript()`	Yes	No	No	No	No
`t.Script()`	Yes	Yes	Yes	Yes	No
`t.WebSearch()`	Yes	No	No	No	No
`t.Skill()`	Yes	No	No	No	No
`t.FlowAction()`	Yes	Yes	No	Yes	Yes
`t.Subflow()`	Yes	Yes	No	Yes	Yes
`t.Decision()`	Yes	No	No	No	No

$id: Unique record identifier for the tool itself.
$capabilityId: Identifies the external capability (Script Include, Flow Action, or Subflow) the tool wraps. Required because these tools reference a platform artifact that exists outside the skill definition.
output.$id: Script tools produce a custom output attribute that needs its own identifier. Only applies to t.Script().
Per-input / per-output $id: Each entry in the inputs or outputs array is a separate mapping record and needs its own unique $id.

InlineScript Tool

const getIncident = t.InlineScript("GetIncident", {
    $id: Now.ID["skill_getincident_tool"],
    script: `(function(context) {
        var gr = new GlideRecord('incident');
        gr.addQuery('number', context.getValue('incident_number'));
        gr.query();
        if (gr.next()) {
            return {
                number: gr.getValue('number'),
                short_description: gr.getValue('short_description')
            };
        }
        return { error: 'Incident not found' };
    })(context)`
});

Access inputs via context.getValue('input_name') with snake_case conversion.

Script Tool

Requires an external Script Include with accessibleFrom: 'all'. Each inputs[].name must match a function parameter name exactly.

const myTool = t.Script("MyTool", {
    $id: Now.ID["my_skill_script_tool"],
    $capabilityId: Now.ID["my_skill_script_capability"],
    output: { $id: Now.ID["my_skill_script_output"] },
    scriptId: myScriptInclude,
    scriptFunctionName: 'processData',
    inputs: [
        { $id: Now.ID["tool_input_id"], name: 'param', value: t.input.description }
    ]
});

value only accepts: t.input.inputName, "hardcoded string", or previousTool.output.

WebSearch Tool

const searchWeb = t.WebSearch("SearchWeb", {
    $id: Now.ID["my_skill_search_tool"],
    searchType: "ai_answers",
    query: t.input.userQuery,
    aiSearchProviders: "perplexity"  // optional
});

Always use searchType: 'ai_answers'. External providers require API key configuration.

Decision Node

const checkPriority = t.Decision("CheckPriority", {
    $id: Now.ID["skill_decision"],
    depends: [getData],
    targets: ["Escalate", "Standard"] as const,
    branches: targets => [{
        name: "Critical",
        to: targets.Escalate,
        condition: { field: getData.priority, operator: "is", value: "1" }
    }],
    default: targets => targets.Standard
});

Branch conditions: { field, operator, value } where operator is 'is' or 'is_not', and value is a plain string.

Tool Chaining

Use the depends property:

const searchWeb = t.WebSearch("SearchWeb", {
    $id: Now.ID["search_tool"],
    searchType: "ai_answers",
    query: getIncident.output,
    depends: [getIncident]
});

Prompt Configuration

Mandatory 4-Section Structure

## Role
You are a [specialist type]. Your task is to [objective].

## Context
The user's [input]: '{{input_name}}'
Tool output: '${p.tool.ToolName.output}'

## Instructions
1. [First step]
2. [Second step]
3. [Constraints]

## Output
The output should be [format]. It must be [qualities].

Prompt Versions

Property	Required	Description
`$id`	Yes	Unique identifier
`model`	Yes	Always `'llm_generic_small_v2'` for Now LLM Service
`promptState`	Yes	Always `'draft'`
`prompt`	Yes	Text or builder function `(p) => string`
`temperature`	No	0.0-1.0 (default: `0.2`)
`maxTokens`	No	Required for non-Now LLM providers
`filterCondition`	No	Per-version usage conditions

Type-Safe Prompt Builder

prompt: p => `## Role
You are an incident specialist.

## Context
Incident details: ${p.tool.GetIncident.output}

## Instructions
1. Review the incident data.
2. Provide actionable recommendations.

## Output
Provide a structured analysis with Summary, Root Cause, and Recommendations.`

maxTokens Guidelines

Output Type	Recommended `maxTokens`
Short answers (yes/no, category)	100-200
Brief summaries	300-500
Formatted reports	1000-2000

Warning: Setting maxTokens too low for formatted output forces raw JSON responses.

Conditional Prompts (filterCondition)

versions: [
    {
        $id: Now.ID["prompt_high"],
        model: "llm_generic_small_v2",
        promptState: "draft",
        prompt: p => `High priority analysis: ${p.input.description}`,
        filterCondition: { priority: "1" }
    },
    {
        $id: Now.ID["prompt_default"],
        model: "llm_generic_small_v2",
        promptState: "draft",
        prompt: p => `Standard analysis: ${p.input.description}`
    }
]

Keys must exactly match input attribute names (case-sensitive, including spaces).

Security Controls (Mandatory)

userAccess

Type	Configuration	Use Case
Authenticated	`{ $id: Now.ID['ua'], type: 'authenticated' }`	General, non-sensitive
Role-Based	`{ $id: Now.ID['ua'], type: 'roles', roles: ['itil'] }`	Sensitive data

roleRestrictions

Array of role sys_ids (not names). Look up from sys_user_role table.

The maint role is NOT allowed for skills.

securityControls: {
    userAccess: {
        $id: Now.ID['skill_user_access'],
        type: 'roles',
        roles: ['itil']
    },
    roleRestrictions: ['282bf1fac6112285017366cb5f867469']
}

Deployment Configuration

Channel	Configuration	When to Use
UI Action	`uiAction: { $id: Now.ID['skill_uiaction'], table: 'incident' }`	Button on record form
Now Assist Panel	`nowAssistPanel: { enabled: true, roles: ['now_assist_panel_user'] }`	Chat interface
Flow Action	`flowAction: true`	Flow Designer integration
None	Omit `deploymentSettings`	Programmatic only

deploymentSettings: {
    uiAction: { $id: Now.ID['skill_uiaction'], table: 'incident' },
    nowAssistPanel: {
        enabled: true,
        roles: ['now_assist_panel_user']
    },
    flowAction: true,
    skillFamily: 'aabb0011ccdd2233eeff4455aabb6677'  // optional
}

Skill Settings (Pre/Post Processors)

skillSettings: {
    providers: [{
        $id: Now.ID['skill_preprocessor'],
        name: 'TestPreProcessor',
        preprocessor: `(function(payload) {
            payload.timestamp = new Date().toISOString();
            return payload;
        })(payload);`,
    },
    {
        $id: Now.ID['skill_postprocessor'],
        name: 'TestPostProcessor',
        postprocessor: `(function(payload) {
            if (payload.response) {
                payload.formatted = payload.response.trim();
            }
            return payload;
        })(payload);`
    }]
}

Script Guidelines

Glide APIs Are Global

gs, GlideRecord, GlideAggregate, GlideDateTime are globally available. Never import them.

Input Parsing

All tool inputs arrive as strings:

Type	Parse
Number	`parseInt(input, 10)`
JSON	`JSON.parse(input)` in try-catch
Boolean	`input === 'true'`

Context Access

TypeScript tool callbacks: context.inputs["incident number"] (exact name, bracket notation)
GlideRecord scripts: context.getValue('incident_number') (snake_case)

Script Include Requirements

Setting	Value
Pattern	`Class.create()`
`clientCallable`	`false`
`accessibleFrom`	`public`

Complete Example

import { NowAssistSkillConfig } from "@servicenow/sdk/core";

export const incidentAnalyzer = NowAssistSkillConfig(
    {
        $id: Now.ID["incident_analyzer"],
        name: "Incident Analyzer",
        inputs: [
            {
                $id: Now.ID["incident_number"],
                name: "incident number",
                mandatory: true,
                dataType: "string",
                testValues: "INC0010001"
            }
        ],
        tools: t => {
            const getIncident = t.InlineScript("GetIncident", {
                $id: Now.ID["analyzer_getincident_tool"],
                script: `(function(context) {
                    var gr = new GlideRecord('incident');
                    gr.addQuery('number', context.getValue('incident_number'));
                    gr.query();
                    if (gr.next()) {
                        return {
                            number: gr.getValue('number'),
                            short_description: gr.getValue('short_description'),
                            priority: gr.getValue('priority')
                        };
                    }
                    return { error: 'Incident not found' };
                })(context)`
            });
            return { GetIncident: getIncident };
        },
        securityControls: {
            userAccess: {
                $id: Now.ID["analyzer_user_access"],
                type: "roles",
                roles: ["itil"]
            },
            roleRestrictions: ["<ROLE_SYS_ID>"]
        },
        deploymentSettings: {
            uiAction: { $id: Now.ID["analyzer_uiaction"], table: "incident" },
            nowAssistPanel: {
                enabled: true,
                roles: ["now_assist_panel_user"]
            }
        }
    },
    {
        providers: [{
            provider: "Now LLM Service",
            prompts: [{
                name: "Analyze",
                versions: [{
                    $id: Now.ID["analyzer_prompt_v1"],
                    model: "llm_generic_small_v2",
                    promptState: "draft",
                    prompt: p => `## Role
You are an incident analysis specialist.

## Context
Incident details: ${p.tool.GetIncident.output}

## Instructions
1. Review the incident number, description, and priority.
2. Identify root cause based on available information.
3. Provide actionable recommendations.

## Output
**Summary:** [Brief overview]
**Root Cause:** [Identified cause or 'Requires investigation']
**Recommendations:** [Numbered action items]`
                }]
            }]
        }]
    }
);

Editing Existing Skills

Edit Workflow

Read the existing .now.ts file in src/fluent/now-assist-skills/
Identify what needs to change
Preserve unchanged configuration
Update testValues if inputs changed
Build, install, and verify

Change Impact Matrix

Change	Also Update
Add input	Update `testValues`, update prompts to reference new input
Remove input	Remove all prompt references, check tool dependencies
Add tool	Update prompts, add to `return` statement in tools callback
Change provider/model	Verify availability, may need prompt adjustments
Change `userAccess`	If switching to `roles`, provide role sys_ids

Validation Rules

Required Fields

Rule	Description
`$id` required	Unique identifier for the skill
`name` required	Skill display name
`securityControls` required	Must include `userAccess` and `roleRestrictions`
`providers` required	At least one provider with prompts
`promptState: 'draft'`	Always use `'draft'` -- other values cause validation errors

Valid Enums

Property	Valid Values
`dataType`	`'string'`, `'numeric'`, `'boolean'`, `'glide_record'`, `'simple_array'`, `'json_object'`, `'json_array'`
`promptState`	`'draft'`, `'finalized'`, `'published'`, `'archived'`
`userAccess.type`	`'authenticated'`, `'roles'`
`providerAPI.type`	`'sys_hub_flow'`, `'sys_hub_action_type_definition'`, `'sys_script_include'`, `'one_api_system_executor'`

Common Hallucinations to Avoid

Wrong	Correct
`promptState: 'published'`	`promptState: 'draft'`
`dataType: 'record'`	`dataType: 'glide_record'`
`dataType: 'text'`	`dataType: 'string'`
`roleRestrictions: ['admin']`	`roleRestrictions: ['<sys_id>']`
`${p.tool.WebSearch.output}`	`${p.tool.WebSearch.response}`
Multiple `glide_record` inputs	Only ONE allowed

Troubleshooting

Problem	Solution
Prompt variable not replaced	Check name conversion (spaces to underscores)
Tool output not available	Verify tool executed before prompt references it
Script execution failed	Check `context.getValue()` uses snake_case
Skill name too long	Shorten to 40 characters
Missing glide_record fields	Provide both `tableName` and `tableSysId`
ShorthandPropertyAssignment	Use `{ tool: tool }` not `{ tool }`
UI Action not appearing	Verify table name, check record exists
Skill not in NAP	Set `nowAssistPanel: { enabled: true, roles: ['now_assist_panel_user'] }`, publish in platform

Post-Creation: Skill URL

After creating a skill, query sn_nowassist_skill_config for skill_id and construct: https://<instance_name>/now/now-assist-skillkit/skill/<skill_id>/

When to Use​

Skill Structure​

API Structure​

Provider and Model Configuration​

Query Steps​

Key Field Mappings​

Default Recommendation​

Code Example​

Known Providers​

Input Attributes​

glide_record vs Tools​

Output Attributes​

Tool Configuration​

Tool Methods​

Output Access in Prompts​

Required Identifiers​

InlineScript Tool​

Script Tool​

WebSearch Tool​

Decision Node​

Tool Chaining​

Prompt Configuration​

Mandatory 4-Section Structure​

Prompt Versions​

Type-Safe Prompt Builder​

maxTokens Guidelines​

Conditional Prompts (filterCondition)​

Security Controls (Mandatory)​

userAccess​

roleRestrictions​

Deployment Configuration​

Skill Settings (Pre/Post Processors)​

Script Guidelines​

Glide APIs Are Global​

Input Parsing​

Context Access​

Script Include Requirements​

Complete Example​

Editing Existing Skills​

Edit Workflow​

Change Impact Matrix​

Validation Rules​

Required Fields​

Valid Enums​

Common Hallucinations to Avoid​

Troubleshooting​

Post-Creation: Skill URL​