absence.io MCP Server
for AI Agents
Connect your AI agent to StackOne's absence.io MCP server and give it 24 MCP tools out of the box. Auth, tool execution, and security all managed.
StackOne 
Coverage
24 Agent Actions
Create, read, update, and delete across absence.io — and extend your agent's capabilities with custom actions.
Authentication
Agent Tool Authentication
Per-user OAuth in one call. Your absence.io MCP server gets session-scoped tokens with zero credentials stored on your infra.
Agent Auth →
Security
Agent Protection
Every absence.io 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 absence.io call.
Tools Discovery →What is the absence.io MCP Server?
A absence.io MCP server lets AI agents read and write absence.io data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's absence.io MCP server ships with 24 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 absence.io MCP Tools
Every action from absence.io's API, ready for your agent. Create, read, update, and delete — scoped to exactly what you need.
Absences
- Create Absence
Create a new absence assigned to a user with a specific reason and approver.
- List Absences
List absences with optional MongoDB-style filtering, sorting, and relation resolution.
- Get Absence
Retrieve a single absence by its MongoDB ObjectId.
- Update Absence
Update an existing absence — only the fields supplied are changed.
Allowance Types
- List Allowance Types
List allowance types with optional MongoDB-style filtering, sorting, and pagination.
- Get Allowance Type
Retrieve a single allowance type by its MongoDB ObjectId.
Departments
- List Departments
List departments with optional MongoDB-style filtering, sorting, and pagination.
- Get Department
Retrieve a single department by its MongoDB ObjectId.
Holidays
- List Holidays
Retrieve holidays for a user or location within a date range, with optional filtering by company, day type, and mandatory-leave status.
Locations
- List Locations
List locations with optional MongoDB-style filtering, sorting, and pagination.
- Get Location
Retrieve a single location by its MongoDB ObjectId.
Reasons
- List Reasons
List absence reasons with optional MongoDB-style filtering, sorting, and pagination.
- Get Reason
Retrieve a single absence reason by its MongoDB ObjectId.
Teams
- List Teams
List teams with optional MongoDB-style filtering, sorting, and pagination.
- Get Team
Retrieve a single team by its MongoDB ObjectId.
Timespans
- Create Timespan
Create a new timespan (work or break entry) for a user.
- List Timespans
List timetracking entries with optional MongoDB-style filtering, sorting, and pagination.
- Get Timespan
Retrieve a single timespan by its MongoDB ObjectId.
- Update Timespan
Update an existing timespan — only the fields supplied are changed.
- Delete Timespan
Delete a timespan by its MongoDB ObjectId.
Users
- List Users
List users with optional MongoDB-style filtering, sorting, and pagination.
- Get User
Retrieve a single user by their MongoDB ObjectId.
- Update User
Update an existing user — only the fields supplied are changed.
Invite Users
- Invite User
Register a new user for the company; optionally send an invitation email.
absence.io AI Agent Use Cases
Connect your AI agent to absence.io and help your team scale the HR operations they run by hand today.
Use StackOne to connect your AI agent to your HRIS, identity management, and LMS to automate employee onboarding.
ViewUse StackOne to connect your AI agent to your HRIS, knowledge base, and messaging tools to automate HR policy Q&A.
ViewUse StackOne to connect your AI agent to your HRIS, identity management, and ITSM to automate employee offboarding and deprovisioning.
ViewSet Up Your absence.io MCP Server in Minutes
One endpoint. Any framework. Your agent is talking to absence.io in under 10 lines of code.
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>"
]
}
}
}Check More hr-workforce MCP Servers
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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
absence.io MCP Server FAQ
Does StackOne have a absence.io MCP server?
absence.io MCP server vs direct API integration — what's the difference?
How does absence.io authentication work for AI agents?
origin_owner_id.Are absence.io MCP tools vulnerable to prompt injection?
What is the context bloat of a absence.io agent and how do I avoid it?
Can I limit which actions my absence.io agent can access?
Can I create custom agent actions for my absence.io MCP server?
When should I NOT use a absence.io MCP server?
What AI frameworks and AI clients does the StackOne absence.io MCP server support?
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.