Clockify MCP Server
for AI Agents

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

The StackOne Clockify 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.

Production-ready Clockify MCP server with 100 extensible actions — plus built-in authentication, security, and optimized execution.

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Clockify MCP Server

Built by

StackOne

Coverage

100 Agent Actions

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

MCP Actions → Create Actions →

Authentication

Agent Tool Authentication

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

Agent Auth →

Security

Agent Protection

Every Clockify 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 Clockify call.

Tools Discovery →

What is the Clockify MCP Server?

A Clockify MCP server lets AI agents read and write Clockify data through the Model Context Protocol — Anthropic's open standard for connecting LLMs to external tools. StackOne's Clockify MCP server ships with 100 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 Clockify MCP Tools and Actions

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

Approval Requests

List Approval Requests
Get approval requests
Update Approval Request
Update approval request

Clients

Create Client
Create a new client in a workspace
List Clients
List all clients in a workspace
Get Client
Get details of a specific client
Update Client
Update an existing client
Delete Client
Delete a client from a workspace

Workspace Custom Fields

Create Workspace Custom Field
Create custom fields on workspace
List Workspace Custom Fields
Get custom fields on workspace
Update Workspace Custom Field
Update custom field on workspace
Delete Workspace Custom Field
Delete custom field

Project Custom Fields

List Project Custom Fields
Get custom fields on project
Update Project Custom Field
Update custom field on project
Remove Project Custom Field
Remove custom field from project

Expenses

Create Expense
Create expense
List Expenses
Get all expenses on workspace
Get Expense
Get expense by ID
Update Expense
Update expense
Delete Expense
Delete expense

Expense Categorys

Create Expense Category
Add expense category
Update Expense Category
Update expense category
Delete Expense Category
Delete expense category

Invoices

Create Invoice
Add invoice
List Invoices
Get all invoices on workspace
Get Invoice
Get invoice by ID
Update Invoice
Send invoice
Delete Invoice
Delete invoice

Invoice Payments

Add Invoice Payment
Add payment to invoice
List Invoice Payments
Get payments for invoice
Delete Invoice Payment
Delete payment from invoice

Workspace Groups

Create Workspace Group
Add a new group
List Workspace Groups
Find all groups on workspace
Update Workspace Group
Update group
Delete Workspace Group
Delete group

Holidays

Create Holiday
Create holiday
List Holidays
Get holidays on workspace
Update Holiday
Update holiday
Delete Holiday
Delete holiday

Projects

Create Project
Create a new project in a workspace
List Projects
List all projects in a workspace
Get Project
Get details of a specific project
Update Project
Update an existing project
Delete Project
Delete a project from a workspace

Assignments

Publish Assignments
Publish assignments
List Assignments
Get all assignments

Recurring Assignments

Create Recurring Assignment
Create recurring assignment
Update Recurring Assignment
Update recurring assignment
Delete Recurring Assignment
Delete recurring assignment

Tasks

Create Task
Create a new task in a project
List Tasks
List all tasks in a project
Get Task
Get details of a specific task
Update Task
Update an existing task
Delete Task
Delete a task from a project

Time Entrys

Create Time Entry
Create a new time entry
Get Time Entry
Get a specific time entry on workspace
Update Time Entry
Update time entry on workspace
Delete Time Entry
Delete a time entry from workspace

Time Off Requests

Create Time Off Request
Create time off request
List Time Off Requests
Get all time off requests on workspace
Delete Time Off Request
Delete request

Policys

Create Policy
Create time off policy
Get Policy
Get time off policy
Update Policy
Update policy
Delete Policy
Delete policy

Member Profiles

Get Member Profile
Get member's profile
Update Member Profile
Update member's profile

Webhooks

Create Webhook
Create webhooks
List Webhooks
Get all webhooks on workspace
Get Webhook
Get a specific webhook by id
Update Webhook
Update a webhook
Delete Webhook
Delete webhook

Workspaces

Create Workspace
Add workspace
List Workspaces
Get all my workspaces
Get Workspace
Get workspace info

Other (21)

Add User To Group
Add users to group
Add User To Workspace
Add user
List Expense Categories
Get all expense categories
Get Holidays In Period
Get holiday in specific period
Get Project Assignments
Get all scheduled assignments on project
List In Progress Time Entries
Get all in progress time entries on workspace
List Time Entries
Get time entries for a user on workspace
Get Balance By Policy
Get balance by policy
Get Balance By User
Get balance by user
List Policies
Get policies on workspace
Get Current User
Get currently logged-in user's info
List Workspace Users
Find all users on workspace
Update Balance
Update balance
Remove User From Group
Remove user from group
Submit Approval Request
Submit approval request
Submit Approval Request For User
Submit approval request for user
Change Invoice Status
Change invoice status
Stop Timer
Stop currently running timer on workspace for user
Change Time Off Request Status
Change time off request status
Change Policy Status
Change policy status
Filter Workspace Users
Filter workspace users with advanced criteria

Set Up Your Clockify MCP Server in Minutes

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

MCP Clients

Agent Frameworks

Claude Desktop-

JSON

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>"
      ]
    }
  }
}

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All HRIS / HCM MCP Servers →

Clockify 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

Clockify MCP Server FAQ

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

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

How does Clockify authentication work for AI agents?

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

Are Clockify MCP tools vulnerable to prompt injection?

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

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

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

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

When should I NOT use a Clockify MCP server?

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

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

The StackOne Clockify 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

Clockify MCP Serverfor AI Agents