Live 49 Actions

Deputy MCP Server
for AI Agents

Q: What AI frameworks and AI clients does the StackOne Deputy MCP server support?

The StackOne Deputy 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.

Connect your AI agent to StackOne's Deputy MCP server and give it 49 MCP tools out of the box. Auth, tool execution, and security all managed.

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Deputy MCP Server

Built by

StackOne

Coverage

49 Agent Actions

Create, read, update, and delete across Deputy — and extend your agent's capabilities with custom actions.

MCP Actions → Build Actions →

Authentication

Agent Tool Authentication

Per-user OAuth in one call. Your Deputy MCP server gets session-scoped tokens with zero credentials stored on your infra.

Agent Auth →

Security

Agent Protection

Every Deputy 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 Deputy call.

Tools Discovery →

What is the Deputy MCP Server?

A Deputy MCP server lets AI agents read and write Deputy data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's Deputy MCP server ships with 49 pre-built actions, fully extensible via the Connector Builder — plus managed authentication, prompt injection defense, observability, and agent execution runtime. Connect it from MCP clients like Claude Desktop, Claude Code, Cursor, Goose, and VS Code, or from agent frameworks like OpenAI Agents SDK, LangChain, and Vercel AI SDK.

All Deputy MCP Tools

Every action from Deputy's API, ready for your agent. Create, read, update, and delete — scoped to exactly what you need.

Locations

Create Location
Create a new location in Deputy
List Locations
Get all locations (companies) in the Deputy installation
Update Location
Update an existing location in Deputy
Delete Location
Delete a location in Deputy

Employees

Create Employee
Add an employee
List Employees
Get details for all employees
Search Employees
Search and filter employees by criteria
Get Employee
Get details for an employee by ID
Update Employee
Update an existing employee

Employee Unavailabilitys

Add Employee Unavailability
Add unavailability details for an employee
Get Employee Unavailability
Get unavailability details for an employee

Rosters

Copy Rosters
Copy rosters from one date range to another
Publish Rosters
Publish rosters to make them visible to employees

Operational Units

Create Operational Unit
Create a new operational unit (department/area)
List Operational Units
Get all operational units (areas/departments)
Update Operational Unit
Update an existing operational unit
Delete Operational Unit
Delete an operational unit

Other (32)

Add New Workplace
Add a new workplace/location to Deputy
Add Location To Employee
Add a location against an employee
Create Multiple Operational Units
Create multiple operational units (departments/areas) at once
Create Memo
Create a memo in Deputy
Get Employee Shift Status
Check whether an employee is currently clocked on, on break, or off shift
List Employee Agreements
Get all employee agreements
Search Employment Contracts
Search for employment contracts using query filters
Search Employment Contract Leave Rules
Search for employment contract leave rules
List Employee Roles
Get all employee roles
List Employee Workplaces
Get all employee workplace records
Search Employee History
Search for employee history records
List Employee Availability
Get all employee availability records
List Employee Appraisals
Get all employee appraisal records
List Employee Agreement History
Get all employee agreement history records
List Employment Conditions
Get all employment condition records
Get Recent Rosters
Get rosters from last 12 hours and forward 36 hours
List Awards Library
Get awards library list
Get Agreed Hours By Employee ID
Get agreed hours for a specific employee
Retrieve Sales Data
Get sales metrics data
List Categories
Get all categories
List Custom Fields
Get all custom field definitions
List Events
Get all events
Remove Location From Employee
Remove a location from an employee
Terminate Employee
Terminate an employee
Activate Employee
Re-activate a terminated employee
Invite Employee
Invite employee to Deputy
Post A Journal
Post a journal entry for an employee
Start Timesheet (Clock On)
Start an employee's timesheet (Clock On)
Stop Timesheet (Clock Off)
Stop an employee's timesheet (Clock Off)
Pause/Unpause Timesheet
Pause or unpause an employee's timesheet (take a break/finish break)
View Timesheet Details
View a timesheet by ID
Discard Rosters
Discard unpublished rosters

Deputy AI Agent Use Cases

Connect your AI agent to Deputy and help your team scale the HR operations they run by hand today.

Employee Onboarding

Use StackOne to connect your AI agent to your HRIS, identity management, and LMS to automate employee onboarding.

View

HR Policy Q&A Chatbot

Use StackOne to connect your AI agent to your HRIS, knowledge base, and messaging tools to automate HR policy Q&A.

View

Employee Offboarding

Use StackOne to connect your AI agent to your HRIS, identity management, and ITSM to automate employee offboarding and deprovisioning.

View

More HRIS & HCM use cases

Set Up Your Deputy MCP Server in Minutes

One endpoint. Any framework. Your agent is talking to Deputy in under 10 lines of code.

MCP Clients

Agent Frameworks

Claude Desktop-

JSON

Claude Desktop Docs

{
  "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>"
      ]
    }
  }
}

Check More HRIS / HCM MCP Servers

UKG Ready

162+ actions

Workday (Rest and Soap)

128+ actions

Factorial

127+ actions

HiBob

123+ actions

Oracle Fusion HCM

120+ actions

Humaans

117+ actions

SAP SuccessFactors

111+ actions

All HRIS / HCM MCP Servers →

Platform 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

MCP vs A2A: Architecture, Security, and When to Use Each

MCP vs A2A: what each protocol standardizes, how they differ, their shared security risks including indirect prompt injection, and when to use one, both, or a hybrid architecture.

12 min

MCP vs API: What 200+ Connector Builds Taught Us

MCP wraps APIs, it doesn't replace them. After building 200+ connectors that serve both, here's when each approach wins.

14 min read

Deputy MCP Server FAQ

Does StackOne have a Deputy MCP server?

Yes. StackOne offers a hosted Deputy MCP server with 49 pre-built actions, and every action is tested and QA'd by StackOne. Connect it to Claude, Cursor, and any other MCP client, or to any agent framework through the AI Action SDK. It ships with managed agent authentication, prompt injection defense, and tool discovery with server-side execution that preserve your agent's context window and keep reasoning performance.

Deputy MCP server vs direct API integration — what's the difference?

A Deputy MCP server and direct API integration serve different use cases. Direct API integration is for software-to-software — backend code calling Deputy. A Deputy 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 Deputy at runtime. StackOne provides both.

How does Deputy authentication work for AI agents?

Deputy 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 Deputy account; StackOne handles token exchange, storage, and refresh. Credentials never reach the LLM, and each user is isolated via origin_owner_id.

Are Deputy MCP tools vulnerable to prompt injection?

Yes — Deputy 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 Deputy agent and how do I avoid it?

Context bloat happens when Deputy tool schemas and API responses eat your Deputy agent's memory, preventing it from reasoning effectively. A single Deputy 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 Deputy agent can access?

Yes — you can limit which actions your Deputy 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 Deputy MCP server?

Yes — you can create custom agent actions for your Deputy MCP server using Connector Builder. It's an integration agent your coding assistant (Claude Code, Cursor, or Copilot) can invoke to research Deputy's API, generate production-ready connector YAML, test against the live API, and validate before you ship.

When should I NOT use a Deputy MCP server?

Skip a Deputy MCP server if your integration is purely software-to-software — direct Deputy 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 Deputy actions at runtime.

What AI frameworks and AI clients does the StackOne Deputy MCP server support?

The StackOne Deputy 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.

Start Free Book Demo

Deputy MCP Serverfor AI Agents

49 Agent Actions

Agent Tool Authentication

Agent Protection

Max Agent Context. Min Cost.

What is the Deputy MCP Server?

All Deputy MCP Tools

Locations

Employees

Employee Unavailabilitys

Rosters

Operational Units

Other (32)

Deputy AI Agent Use Cases

Set Up Your Deputy MCP Server in Minutes

Check More HRIS / HCM MCP Servers

Platform Resources

MCP Code Mode: Keeping Tool Responses Out of Agent Context

Comparing BM25, TF-IDF, and Hybrid Search for MCP Tool Discovery

Indirect Prompt Injection Defense for MCP Tools: A Technical Guide

MCP vs A2A: Architecture, Security, and When to Use Each

MCP vs API: What 200+ Connector Builds Taught Us

Deputy MCP Server FAQ

Put your AI agents to work

Deputy MCP Server
for AI Agents