Harvest Time Tracking MCP Server

A TypeScript based MCP (Model Context Protocol) server for Harvest time tracking app enabling LLM clients to interact with Harvest account.

Prerequisites

• Bun Runtime
• Harvest account with API access
• API Personal Access Token from Harvest
• Account ID from Harvest

More details on how to create a Personal Access Token can be found in the Harvest API documentation.

Tools

Available Tools

Tool	Description	Inputs	Output
get-company	Get company information	None	Company Information (Name, URL, ID and Currency)
search-clients	Searches for clients	• name: string (optional) - Client name • isActive: boolean (optional) - Active status	List of clients with IDs and details
get-client	Get client information	• clientId: string - Client ID	Detailed client information
search-projects	Searches for projects	• name: string (optional) - Project name • clientId: string (optional) - Client ID • isActive: boolean (optional) - Active status	List of projects with IDs and details
get-project	Get project information	• projectId: string - Project ID	Detailed project information
list-users	Lists all users	None	List of users with IDs and details
get-user	Get user information	• userId: string - User ID	Detailed user information
list-project-users	List project user assignments	• projectId: string - Project ID	List of users assigned to project
list-project-tasks	List project task assignments	• projectId: string - Project ID	List of tasks assigned to project
search-time-entries	Searches for time entries	• from: string (optional) - Start date (YYYY-MM-DD) • to: string (optional) - End date (YYYY-MM-DD) • userId: string (optional) - User ID • projectId: string (optional) - Project ID • clientId: string (optional) - Client ID	List of time entries with details
get-time-entry	Get time entry details	• timeEntryId: string - Time Entry ID	Detailed time entry information
create-time-entry	Create a new time entry	• projectId: string - Project ID • taskId: string - Task ID • userId: string - User ID • hours: number - Hours spent • notes: string (optional) - Additional notes	Created time entry details

Note: More tools coming soon.

Usage

Claude Desktop

• Open the Claude desktop config file claude-desktop-config.json and set the following details under mcpServers.

  {
    "mcpServers": {
      "Harvest": {
        "command": "npx",
        "args": [
          "@harvest/mcp-server-typescript",
          // Or use the path to the local build
          // "path/to/local/build/dist/index.js"
        ],
        "env": {
          "HARVEST_ACCOUNT_ID": "<Harvest Account ID>",
          "HARVEST_ACCESS_TOKEN": "<Harvest Personal Access Token>",
          "HARVEST_BASE_URL": "<Harvest Base URL>"
        }
      }
    }
  }

Cursor IDE

• Open the Cursor IDE config file ~/.cursor/mcp.json or <project-root>/.cursor/mcp.json and set the following details under mcpServers.

  {
    "mcpServers": {
      "Harvest": {
        "command": "npx",
        "args": [
          "@harvest/mcp-server-typescript",
          // Or use the path to the local build
          // "path/to/local/build/dist/index.js"
        ],
        "env": {
          "HARVEST_ACCOUNT_ID": "<Harvest Account ID>",
          "HARVEST_ACCESS_TOKEN": "<Harvest Personal Access Token>",
          "HARVEST_BASE_URL": "<Harvest Base URL>"
        }
      }
    }
  }

Local Installation And Development

1. Install dependencies:

   npm install

2. Build the project:

   npm run build

This will create a dist directory containing the compiled JavaScript files.

3. To use the local development version of MCP server instead of the published version, you can run the server directly from the local build:

   npm run build

   Modify the MCP server configuration file in any of the clients (Claude, Cursor)

    {
      "mcpServers": {
        "Harvest": {
          "command": "node",
          "args": [
            "path/to/local/build/dist/index.js"
          ],
          "env": {
            "HARVEST_ACCOUNT_ID": "<Harvest Account ID>",
            "HARVEST_ACCESS_TOKEN": "<Harvest Personal Access Token>",
            "HARVEST_BASE_URL": "<Harvest Base URL>"
          }
        }
      }
    } 

4. Restart the client application (Claude, Cursor) to apply the changes and test the latest changes without publishing a new version.