Description

n8n-nodes-kimai-pro


An n8n community node for integrating with Kimai time-tracking software. This node provides comprehensive access to the Kimai REST API, allowing you to automate time tracking, manage projects, customers, activities, teams, invoices, and more.

Features

• Modular Architecture: Refactored from a monolithic implementation into 12 focused descriptor files under nodes/KimaiPro/descriptors/, making the codebase easier to maintain, extend, and review
• AI Tools Node: Expose Kimai Pro operations as AI tools for AI Agent and MCP Server Trigger workflows
• Complete API Coverage: Supports 87 operations across 9 resources — all public Kimai Pro API endpoints
• Resource Management:

– Activities (CRUD, rates, meta fields, team assignment)
– Customers (CRUD, rates, meta fields, comments, team assignment)
– Projects (CRUD, rates, meta fields, comments, team assignment)
– Tags (Create, Get, Delete)
– Teams (CRUD, member management, access control)
– Timesheets (CRUD, stop/restart/duplicate/export, meta fields, recent/active queries)
– Users (CRUD, preferences, API token management)
– Invoices (Read, custom fields, download)
– Approval (Week status, overtime tracking, approval submission)
– System (Config, colors, ping, version, plugins)

• Declarative Style: Uses n8n’s declarative routing for clean, maintainable code
• Full Query Support: Filtering, sorting, pagination, and search capabilities
• Array Parameters: Support for array query parameters (projects[], customers[], etc.)
• API Version: Compatible with Kimai Pro API v1.1

Architecture

The node uses a modular descriptor-based architecture. Each Kimai resource (Activity, Customer, Project, etc.) is defined in its own TypeScript file under nodes/KimaiPro/descriptors/. This structure:

• Separates concerns: Each resource has its own file for operations, parameters, and routing
• Simplifies maintenance: Changes to one resource don’t affect others
• Enables collaboration: Multiple contributors can work on different resources simultaneously
• Improves readability: Clear, focused files are easier to review and understand

nodes/KimaiPro/
├── KimaiPro.node.ts           # Main node (orchestrates descriptors)
├── helpers.ts                 # Shared utility functions
├── sdk-wrapper.ts             # Kimai SDK integration
├── kimai.svg                  # Node icon
├── descriptors/
│   ├── activity.ts            # Activity operations (10)
│   ├── customer.ts            # Customer operations (14)
│   ├── project.ts             # Project operations (14)
│   ├── tag.ts                 # Tag operations (3)
│   ├── team.ts                # Team operations (13)
│   ├── timesheet.ts           # Timesheet operations (12)
│   ├── user.ts                # User operations (7)
│   ├── invoice.ts             # Invoice operations (4)
│   ├── default.ts             # System/approval operations (10)
│   ├── common.ts              # Shared parameter builders
│   ├── types.ts               # TypeScript type definitions
│   └── index.ts               # Descriptor exports

Installation

Community Nodes (Recommended)

Install directly from n8n:

1. Go to Settings → Community Nodes
2. Click Install
3. Enter: n8n-nodes-kimai-pro
4. Click Install

Manual Installation

cd ~/.n8n/nodes
npm install n8n-nodes-kimai-pro

Restart n8n to load the nodes. This installs both the Kimai Pro node and the Kimai Pro AI Tools node.

Credentials Setup

1. In n8n, go to Credentials → Add Credential
2. Search for Kimai API
3. Configure:
– API URL: Base URL of your Kimai instance (e.g., https://kimai.example.com)
– API Token: Your Kimai Pro API token (Bearer token)

Getting Your API Token

1. Log in to your Kimai instance
2. Go to your user profile → API Access
3. Create a new API token
4. Copy the token and use it in the credentials

Resources and Operations

Activity (10 operations)

• Create: Create a new activity
• Get: Get a specific activity by ID
• Get All: List all activities with filtering options
• Update: Update an existing activity
• Delete: Delete an activity
• Update Meta: Update activity custom field
• Get Rates: Get rates for an activity
• Add Rate: Add a rate for an activity
• Delete Rate: Delete a rate for an activity
• Add Team: Assign a team to an activity

Customer (14 operations)

• Create: Create a new customer
• Get: Get a specific customer by ID
• Get All: List all customers with filtering options
• Update: Update an existing customer
• Delete: Delete a customer
• Update Meta: Update customer custom field
• Get Rates: Get rates for a customer
• Add Rate: Add a rate for a customer
• Delete Rate: Delete a rate for a customer
• Get Comments: Get comments for a customer
• Add Comment: Add a comment to a customer
• Delete Comment: Delete a comment from a customer
• Toggle Pin Comment: Pin/unpin a customer comment
• Add Team: Assign a team to a customer

Project (14 operations)

• Create: Create a new project
• Get: Get a specific project by ID
• Get All: List all projects with filtering options
• Update: Update an existing project
• Delete: Delete a project
• Update Meta: Update project custom field
• Get Rates: Get rates for a project
• Add Rate: Add a rate for a project
• Delete Rate: Delete a rate for a project
• Get Comments: Get comments for a project
• Add Comment: Add a comment to a project
• Delete Comment: Delete a comment from a project
• Toggle Pin Comment: Pin/unpin a project comment
• Add Team: Assign a team to a project

Tag (3 operations)

• Create: Create a new tag
• Get All: List all tags (with optional name filter)
• Delete: Delete a tag by ID

Team (13 operations)

• Create: Create a new team
• Get: Get a specific team by ID
• Get All: List all teams
• Update: Update an existing team
• Delete: Delete a team
• Add Member: Add a user to a team
• Remove Member: Remove a user from a team
• Grant Customer Access: Grant team access to a customer
• Revoke Customer Access: Revoke customer access from a team
• Grant Project Access: Grant team access to a project
• Revoke Project Access: Revoke project access from a team
• Grant Activity Access: Grant team access to an activity
• Revoke Activity Access: Revoke activity access from a team

Timesheet (12 operations)

• Create: Create a new timesheet entry
• Get: Get a specific timesheet by ID
• Get All: List all timesheets with extensive filtering options
• Update: Update an existing timesheet
• Delete: Delete a timesheet
• Stop: Stop an active timesheet
• Restart: Restart a timesheet (creates new entry)
• Duplicate: Duplicate a timesheet
• Toggle Export: Toggle timesheet export state
• Update Meta: Update timesheet custom field
• Get Recent: Get recent user activities
• Get Active: Get active timesheets for current user

User (7 operations)

• Create: Create a new user
• Get: Get a specific user by ID
• Get All: List all users with filtering options
• Get Me: Get current authenticated user
• Update: Update an existing user
• Update Preferences: Update user preferences
• Delete API Token: Delete an API token

Invoice (4 operations)

• Get: Get a specific invoice by ID
• Get All: List all invoices with filtering options
• Update Custom Fields: Update invoice custom fields
• Download: Download an invoice file

Default / System (10 operations)

• Get Timesheet Config: Get timesheet configuration
• Get Colors: Get configured color codes
• Ping: Test API connection
• Get Version: Get Kimai version information
• Get Plugins: Get installed plugins list
• Get Next Week: Get next week number
• Get Overtime Year: Get overtime year configuration
• Get Week Status: Get approval status for a week
• Get Weekly Overtime: Get overtime for a week
• Add to Approve: Submit timesheets for approval

AI Tools Node

The Kimai Pro AI Tools node exposes Kimai Pro operations as AI tools, enabling AI Agent and MCP Server Trigger nodes to interact with your Kimai instance directly.

How It Works

Instead of individual tools for each operation, the AI Tools node provides a unified tool per resource (e.g., kimaiPro_timesheet) with an operation field in the tool call. This keeps the tool surface clean while providing full API coverage.

Configuration

• Resource: Select which resource to expose (Activity, Customer, Project, Timesheet, User, Tag, Team, Invoice, or Default/System)
• Allow Writes: Toggle to enable write operations (create, update, delete). Read-only by default for safety
• Operations: Multi-select of available operations, dynamically filtered based on the Allow Writes setting

Tool Naming

Each resource exposes a single tool named kimaiPro_{resource}:

• kimaiPro_activity
• kimaiPro_customer
• kimaiPro_project
• kimaiPro_timesheet
• kimaiPro_user
• kimaiPro_tag
• kimaiPro_team
• kimaiPro_invoice
• kimaiPro_default (system operations)

Usage

Connect the AI Tools node to an AI Agent node or MCP Server Trigger node. The AI can then call Kimai operations as tools, passing parameters like IDs, filters, and request bodies as needed.

Response Enrichment

Responses include related names alongside IDs for easier AI reasoning. For example, a timesheet response includes customerName and projectName fields in addition to their IDs.

Write Safety

Write operations are opt-in via the “Allow Writes” toggle. Destructive operations (delete, update) are tracked and clearly labeled to prevent accidental data modification.

Usage Examples

Example 1: Create a Timesheet Entry

1. Add a Kimai Pro node to your workflow
2. Select Resource: Timesheet
3. Select Operation: Create
4. Fill in:
– Project ID: 1
– Activity ID: 5
– Begin: 2024-01-15T09:00:00
– End: 2024-01-15T17:00:00
– Description: Working on project tasks

Example 2: Get All Active Timesheets

1. Add a Kimai Pro node
2. Select Resource: Timesheet
3. Select Operation: Get Active
4. The node will return all active timesheets for the current user

Example 3: Filter Timesheets by Date Range

1. Add a Kimai Pro node
2. Select Resource: Timesheet
3. Select Operation: Get All
4. Configure filters:
– Begin: 2024-01-01T00:00:00
– End: 2024-01-31T23:59:59
– Active: Active (value: 1)

Example 4: Create a Customer

1. Add a Kimai Pro node
2. Select Resource: Customer
3. Select Operation: Create
4. Fill in required fields:
– Name: Acme Corporation
– Country: US
– Currency: USD
– Timezone: America/New_York

Example 5: Using AI Tools with AI Agent

1. Add a Kimai Pro AI Tools node
2. Configure:
– Resource: Timesheet
– Allow Writes: Enable if the AI should create/modify timesheets
– Operations: Select the operations you want the AI to use (e.g., Create, Get All, Stop)
3. Add a Kimai Pro node (for credentials) and connect it to the AI Tools node
4. Add an AI Agent node and connect the AI Tools node to it
5. Prompt the AI Agent — it can now call Kimai operations as tools

The AI Agent can query timesheets, create entries, stop active timesheets, and more — all through natural language instructions.

Query Parameters

The node supports various query parameters for filtering and sorting:

• Filtering: visible, customer, project, activity, user, etc.
• Date Ranges: begin, end (ISO 8601 format)
• Sorting: orderBy, order (ASC/DESC)
• Search: term (free text search)
• Pagination: page, size
• Array Filters: projects[], customers[], activities[], users[], tags[]

Array Parameters

For array query parameters (like projects[]), provide comma-separated values:

• Projects: 1,2,3 → projects[]=1&projects[]=2&projects[]=3
• Tags: tag1,tag2 → tags[]=tag1&tags[]=tag2

Date-Time Format

Timesheet operations use ISO 8601 date-time format:

• Format: YYYY-MM-DDThh:mm:ss (e.g., 2024-01-15T09:00:00)
• Timezone: Handled by Kimai based on user/customer timezone settings

Response Handling

All operations return JSON responses. The node automatically handles:

• Single entity responses (Get operations)
• Array responses (Get All operations)
• Empty responses (Delete operations return 204)

Error Handling

The node will return error responses from the Kimai Pro API. Common errors:

• 401: Invalid or missing API token
• 403: Insufficient permissions
• 404: Resource not found
• 422: Validation error (check request body)

Compatibility

• Minimum n8n version: 0.180.0
• Tested against n8n version: 1.0.0+
• Kimai Pro API: Compatible with Kimai v2.0+

Resources

• n8n community nodes documentation
• Kimai Pro API documentation
• Kimai website

Development

Prerequisites

• Node.js (v18.10.0 or higher)
• npm

Setup Development Environment

1. Clone the repository:

   git clone https://github.com/msoukhomlinov/n8n-nodes-kimai-pro.git
   cd n8n-nodes-kimai-pro
   

2. Install dependencies:

   npm install
   

3. Build the node:

   npm run build
   

4. Link to your n8n installation:

   cd ~/.n8n/nodes
   ln -s /path/to/n8n-nodes-kimai-pro n8n-nodes-kimai-pro
   

Watch Mode

To automatically rebuild on file changes:

npm run dev

Testing the Node

1. Build the node:

   npm run build
   

2. Link to your n8n installation and restart n8n
3. In n8n, add the Kimai Pro node to a workflow and test the operations

Project Structure

n8n-nodes-kimai-pro/
├── credentials/
│   └── KimaiApi.credentials.ts    # API credentials configuration
├── nodes/
│   └── KimaiPro/
│       ├── KimaiPro.node.ts       # Main node (orchestrates descriptors)
│       ├── helpers.ts             # Shared utility functions
│       ├── sdk-wrapper.ts         # Kimai SDK integration
│       ├── kimai.svg              # Node icon
│       ├── ai-tools/
│       │   ├── KimaiProAiTools.node.ts
│       │   ├── schema-generator.ts
│       │   ├── tool-executor.ts
│       │   ├── description-builders.ts
│       │   ├── error-formatter.ts
│       │   ├── response-builder.ts
│       │   └── runtime.ts
│       └── descriptors/           # Modular resource descriptors
│           ├── activity.ts        # Activity operations
│           ├── customer.ts        # Customer operations
│           ├── project.ts         # Project operations
│           ├── tag.ts             # Tag operations
│           ├── team.ts            # Team operations
│           ├── timesheet.ts       # Timesheet operations
│           ├── user.ts            # User operations
│           ├── invoice.ts         # Invoice operations
│           ├── default.ts         # System/approval operations
│           ├── common.ts          # Shared parameter builders
│           ├── types.ts           # TypeScript type definitions
│           └── index.ts           # Descriptor exports
├── package.json                   # Package configuration
├── tsconfig.json                  # TypeScript configuration
├── README.md                      # This file
└── CHANGELOG.md                   # Version history

Available npm Scripts

• npm run build: Build the node
• npm run dev: Watch for changes and rebuild automatically
• npm run format: Format code with Prettier
• npm run lint: Lint code with ESLint
• npm run lintfix: Auto-fix linting issues

API Coverage

This node implements all major Kimai Pro API endpoints:

✅ Activities (CRUD + rates + meta fields + team assignment)
✅ Customers (CRUD + rates + meta fields + comments + team assignment)
✅ Projects (CRUD + rates + meta fields + comments + team assignment)
✅ Tags (Create, Get All, Delete)
✅ Teams (CRUD + member management + access control)
✅ Timesheets (CRUD + stop/restart/duplicate/export + meta fields)
✅ Users (CRUD + preferences + API token management)
✅ Invoices (Read + custom fields + download)
✅ Approval (Week status, overtime, approval submission)
✅ System (Config, colors, ping, version, plugins)

Total: 87 operations across 9 resources.

All 87 operations are also available via the AI Tools node for AI Agent and MCP workflows.

Based on the official Kimai REST API.

Contributing

Contributions are welcome! Please read CONTRIBUTING.md for detailed guidelines.

Quick start:

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

Publishing

Automated Publishing

This project uses GitHub Actions to automatically publish to npm when a new release is created:

1. Update version in package.json
2. Update CHANGELOG.md with changes
3. Commit and push changes
4. Create a tag:

   git tag -a v1.2.0 -m "Release v1.2.0"
   git push origin v1.2.0
   

5. Create GitHub Release – Publishing to npm happens automatically

GitHub Actions Workflows

• Build & Test – Runs on every push/PR
• Version Check – Ensures version is bumped in PRs
• Publish to npm – Automatic when GitHub release is created

Issues

If you encounter any issues or have questions, please open an issue on GitHub.

Changelog

See CHANGELOG.md for detailed version history.

License

MIT

Author

Max Soukhomlinov

• GitHub: @msoukhomlinov

Acknowledgments

• Built on top of n8n
• Integrates with Kimai time-tracking software
• Based on the Kimai REST API
• Forked from Pixel & Process’s n8n-nodes-kimai — original node by Pixel & Process

Note: This is a community-created node and is not officially maintained by n8n GmbH or the Kimai project.