Connect
Optimize
Secure
UKG Pro MCP Server
for AI Agents
Production-ready UKG Pro MCP server with 45 extensible actions — plus built-in authentication, security, and optimized execution.
UKG Pro MCP Server
Built by 
StackOne
StackOne 
Coverage
45 Agent Actions
Create, read, update, and delete across UKG Pro — and extend your agent's capabilities with custom actions.
Authentication
Agent Tool Authentication
Per-user OAuth in one call. Your UKG Pro MCP server gets session-scoped tokens with zero credentials stored on your infra.
Agent Auth →
Security
Agent Protection
Every UKG Pro tool response scanned for prompt injection in milliseconds — 88.7% accuracy, all running on CPU.
Prompt Injection Defense →
Performance
Max Agent Context. Min Cost.
Free up to 96% of your agent's context window to enhance reasoning and reduce cost, on every UKG Pro call.
Tools Discovery →What is the UKG Pro MCP Server?
A UKG Pro MCP server lets AI agents read and write UKG Pro data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's UKG Pro MCP server ships with 45 pre-built actions, fully extensible via the Connector Builder — plus managed authentication, prompt injection defense, and optimized agent context. Connect it from MCP clients like Claude Desktop, Cursor, and VS Code, or from agent frameworks like OpenAI Agents SDK, LangChain, and Vercel AI SDK.
All UKG Pro MCP Tools and Actions
Every action from UKG Pro's API, ready for your agent. Create, read, update, and delete — scoped to exactly what you need.
Person Details
- List Person Details
Retrieve a paginated list of person details from UKG Pro REST API
- Get Person Details
Retrieve details for a specific person by employee ID from UKG Pro REST API
PTO Plans
- Create PTO Plan
Create a new PTO plan record for an employee in UKG Pro
- List PTO Plans
Retrieve a paginated list of all PTO plans from UKG Pro
- Get PTO Plan
Retrieve a specific PTO plan for an employee from UKG Pro
- Update PTO Plan
Update an existing PTO plan for an employee in UKG Pro
Organization Levels
- Create Organization Level
Create a new organization level configuration in UKG Pro
- List Organization Levels
Retrieve a list of all organization level configurations from UKG Pro
Job Configurations
- List Job Configurations
Retrieve a list of all job configurations from UKG Pro
- Get Job Configuration
Retrieve a specific job configuration from UKG Pro by job code
Location Configurations
- List Location Configurations
Retrieve a list of all location configurations from UKG Pro
- Get Location Configuration
Retrieve a specific location configuration from UKG Pro by location code
Other (33)
- List Employee Supervisor Details
Retrieve employee-supervisor relationships and reporting hierarchy from UKG Pro REST API
- List Employee Multiple Phone Numbers
Retrieve employee phone numbers and contact information from UKG Pro REST API
- List Employee Changes By Date
Retrieve employee information changes within a specified date range from UKG Pro
- List Employee Changes By Employee ID
Retrieve employee information changes for a specific employee from UKG Pro
- List Business Structure Changes
Retrieve a list of employees with business structure changes from UKG Pro
- List Compensation Details
Retrieve a paginated list of employee compensation details from UKG Pro REST API
- Get Compensation Details By Employee
Retrieve compensation details for a specific employee by their ID
- List Employee Job History Details
Retrieve employee job history including position changes, promotions, and salary adjustments
- List Earnings History
Retrieve historical earnings data including base elements and pay history from UKG Pro
- List Direct Deposits
Retrieve direct deposit details for US and Canadian employees from UKG Pro
- List Payroll Deductions History
Retrieve payroll deductions history from UKG Pro
- List Pay Group Pay Periods
Retrieve pay group and pay period information from UKG Pro
- Get Pay Register
Retrieve pay register data from UKG Pro
- Get Employee Pay Statements
Retrieve pay statements for a specific employee within a date range from UKG Pro
- Get Employee Last Pay Statement
Retrieve the most recent pay statement for a specific employee from UKG Pro
- List Employee Deductions
Retrieve employee benefit deduction information from UKG Pro
- List Dependent Deductions
Retrieve dependent benefit deduction information from UKG Pro
- List Employee COBRA Details
Retrieve COBRA status and details for employees from UKG Pro
- List Open Enrollment Employee Deductions
Retrieve open enrollment employee deduction selections from UKG Pro
- List Employee PTO Plans
Retrieve all PTO plans for a specific employee from UKG Pro
- List Earnings Configurations
Retrieve a list of all earnings type configurations from UKG Pro
- List Company Details
Retrieve a list of all company configurations from UKG Pro
- List Employee Positions
Retrieve a list of employee position information with various filtering options
- List Job Groups
Retrieve a list of all job group configurations from UKG Pro
- List Employee Contacts
Retrieve a list of all employee contacts from UKG Pro
- Get Employee Contact Details
Retrieve detailed information for a specific employee contact from UKG Pro
- List International Employees
Retrieve international employee details for all employees
- Get International Employee Details
Retrieve international details for a specific employee
- List Global Employee Bank Accounts
Retrieve direct deposit details for global employees
- List Global Localization Elements
Retrieve global employee localization fields added to UKG Pro
- Get User Details
Retrieve user details from UKG Pro including login information and user status
- Get Security Roles
Retrieve security roles from the roles table in UKG Pro
- Get Employee Security User Details
Retrieve employee security user details from UKG Pro
Set Up Your UKG Pro MCP Server in Minutes
One endpoint. Any framework. Your agent is talking to UKG Pro in under 10 lines of code.
MCP Clients
Agent Frameworks
JSON{
"mcpServers": {
"stackone": {
"command": "npx",
"args": [
"-y",
"mcp-remote@latest",
"https://api.stackone.com/mcp?x-account-id=<account_id>",
"--header",
"Authorization: Basic <YOUR_BASE64_TOKEN>"
]
}
}
}More HRIS / HCM MCP Servers
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UKG Pro MCP Server Resources
MCP Code Mode: Keeping Tool Responses Out of Agent Context
Anthropic's code_execution processes data already in context. Custom MCP code mode keeps raw tool responses in a sandbox. 14K tokens vs 500.
11 min
Comparing BM25, TF-IDF, and Hybrid Search for MCP Tool Discovery
Benchmarking BM25, TF-IDF, and hybrid search for MCP tool discovery across 916 tools. The 80/20 TF-IDF/BM25 hybrid hits 21% Top-1 accuracy in under 1ms.
10 min
Indirect Prompt Injection Defense for MCP Tools: A Technical Guide
MCP tools that read emails, CRM records, and tickets are indirect prompt injection vectors. Here's how we built a two-tier defense that scans tool results in ~11ms.
12 min
UKG Pro MCP Server FAQ
UKG Pro MCP server vs direct API integration — what's the difference?
A UKG Pro MCP server and direct API integration serve different use cases. Direct API integration is for software-to-software — backend code calling UKG Pro. A UKG Pro MCP server is for AI agents — MCP clients like Claude and Cursor, plus framework agents built with OpenAI, LangChain, or Vercel AI — discovering and calling UKG Pro at runtime. StackOne provides both.
How does UKG Pro authentication work for AI agents?
UKG Pro authentication for AI agents works through a StackOne Connect Session. Create one via the dashboard or the SDK — you get an auth link and ready-to-paste config for Claude Desktop, Cursor, and other MCP clients. Your user authenticates their own UKG Pro account; StackOne handles token exchange, storage, and refresh. Credentials never reach the LLM, and each user is isolated via
origin_owner_id.Are UKG Pro MCP tools vulnerable to prompt injection?
Yes — UKG Pro MCP tools can be vulnerable to indirect prompt injection. Any tool that reads user-written content — documents, messages, tickets, records, or free-text fields — is a potential vector. StackOne Defender scans every tool response before it enters the agent's context — regex patterns in ~1ms, then a MiniLM classifier in ~4ms. 88.7% accuracy, CPU-only.
What is the context bloat of a UKG Pro agent and how do I avoid it?
Context bloat happens when UKG Pro tool schemas and API responses eat your UKG Pro agent's memory, preventing it from reasoning effectively. A single UKG Pro query can return a massive JSON response, and connecting multiple tools compounds the problem. Tools Discovery and Code Mode reduce context bloat — loading only relevant tools per query and keeping raw responses out of the agent's context.
Can I limit which actions my UKG Pro agent can access?
Yes — you can limit which actions your UKG Pro agent can access directly from the StackOne dashboard. Toggle actions on or off, or restrict them to specific accounts, with no code changes to your agent. Session tokens can be scoped to exact actions so if one leaks, exposure stays contained.
Can I create custom agent actions for my UKG Pro MCP server?
Yes — you can create custom agent actions for your UKG Pro MCP server using Connector Builder. It's an integration agent your coding assistant (Claude Code, Cursor, or Copilot) can invoke to research UKG Pro's API, generate production-ready connector YAML, test against the live API, and validate before you ship.
When should I NOT use a UKG Pro MCP server?
Skip a UKG Pro MCP server if your integration is purely software-to-software — direct UKG Pro API integration is simpler when no AI agent is involved. For deterministic, compliance-critical operations (financial transactions, regulatory reporting), direct API gives you predictable behavior without agent-driven decision-making. MCP shines when AI agents need to dynamically discover and call UKG Pro actions at runtime.
What AI frameworks and AI clients does the StackOne UKG Pro MCP server support?
The StackOne UKG Pro MCP server supports both. MCP clients (paste-and-go apps): Claude Desktop, Claude Code, Cursor, VS Code, Goose. Agent frameworks (code SDKs you build with): OpenAI Agents SDK, Anthropic, Vercel AI, Google ADK, CrewAI, Pydantic AI, LangChain, LangGraph, Azure AI Foundry.
Put your AI agents to work
All the tools you need to build and scale AI agent integrations, with best-in-class connectivity, execution, and security.