Harvest MCP. Manage Billing and Time Without Leaving Your Chat Window.
Harvest MCP lets you manage all your time tracking, client records, and invoicing directly through any AI agent. Forget switching between dashboards to track billable hours or create invoices. This connector gives your AI assistant full control over your entire billing cycle—from listing active projects to generating new draft invoices for clients.
Give Claude and any AI agent real-world access
The tool retrieves a comprehensive list of every client currently in your Harvest account.
You can add entirely new client records to the system using this function.
The agent creates a new invoice draft for a specified client, ready for review or sending.
It retrieves detailed records of all hours logged against clients and projects by your team.
The system pulls up a summary of information for any active or past project.
This function fetches basic account and profile information about the currently authenticated user.
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What AI agents can do with Harvest: 11 Tools for Billing & Clients
These tools allow you to perform every core function of Harvest—from listing clients to creating invoices and tracking time logs—all through natural language prompts.
Make your AI actually useful.
Add this MCP to Claude, Cursor, or Windsurf and your AI stops guessing. It gets real tools to look things up, take action, and handle the stuff you keep doing by hand.
Start using Harvest MCPDelete Client
Permanently removes a client record from your account.
Create Client
Adds a new client entry into Harvest for tracking purposes.
Create Invoice
Generates and records a brand-new invoice in the system.
Get Client
Retrieves specific, detailed information about one client by name or ID.
Get Invoice
Fetches all necessary details for a single invoice record.
Get My Profile
Pulls account information about the user who is currently logged in.
List Clients
Provides a list of every client associated with your Harvest account.
List Invoices
Shows a history listing of all invoices, including drafts and sent records.
List Projects
Retrieves a list of every active or closed project in the system.
List Time Entries
Gathers all recorded time entries, allowing you to check team productivity.
Update Client
Modifies existing details, like the name, for a client record.
Security and governance baked right in.
Pick your AI client below to get set up. Just create a Vinkius account, subscribe, and you're instantly up and running. We handle the entire backend infrastructure, delivering out-of-the-box support for HTTPS Streamable, SSE, and OAuth2—zero messy routing required.
Choose How to Get Started
Build a custom MCP for your own tools, or connect a ready-made integration from our catalog.
Build Your Own
Turn any API into an MCP. Import a spec, define Agent Skills, or deploy with MCPFusion.
- Import from OpenAPI, Swagger, or YAML specs
- Create Agent Skills with progressive disclosure
- Deploy to edge with MCPFusion framework
- Built in DLP, auth, and compliance on each call
- Real time usage dashboard and cost metering
- Publish to catalog or keep private
Make Your AI Do More
Start with Harvest, then connect any of our 5,200+ other servers whenever your AI needs more. One click, no limits.
- Use this MCP plus 5,200+ others, all in one place
- Add new capabilities to your AI anytime you want
- Connections are secured and governed automatically
- Track usage and costs across all your servers
- Works with Claude, ChatGPT, Cursor, and more
- New servers added to the catalog weekly
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Billing tasks shouldn't require three browser tabs.
Right now, when you need to know what’s owed, the process is a nightmare. You open Harvest to list clients, then switch to your time tracking dashboard to see logged hours, and finally jump over to the invoicing section to check if any drafts are overdue. It's constant copy-pasting between different views just to get one coherent picture.
With this MCP, you simply ask your agent: 'Show me all unbilled time for clients with pending invoices.' The system pulls the client list, cross-references active projects, and flags the necessary time entries—all in a single, conversational reply. You don't click; you just talk.
Harvest MCP: Get project details and manage billing instantly.
The manual steps that vanish include logging into the web portal to confirm a client's name, running a separate report for time entries, and then manually generating an invoice draft using the `create_invoice` tool. These are all siloed actions in different parts of the app.
Now, you manage everything from one place. You tell your agent what you need—be it listing projects or updating client details—and it executes the command instantly. It’s a single flow; the process is seamless.
What Harvest MCP does for your AI
Instead of navigating multiple tabs in a web dashboard and manually exporting spreadsheets, your AI agent handles the whole billing process conversationally. You can ask it to pull up a list of all active clients and then immediately request time logs associated with that group. Need an invoice? Just tell it which client needs billing; it drafts the invoice or updates its status.
It manages everything: checking user profiles, updating company details, listing projects, and compiling detailed reports on logged time for your team. This capability makes your agent act like a dedicated operations manager who never forgets a detail. By connecting this MCP through Vinkius, you get access to the entire catalog of professional tools from one place, keeping complex billing workflows entirely within your chat window.
019d75ae-7b31-724c-9c43-161ede9bea0d How to set up Harvest MCP
The bottom line is you stop switching contexts. You talk to your agent about time or clients, and it handles the complex data retrieval from Harvest for you.
Subscribe to this MCP on Vinkius.
Enter your Harvest Access Token and Account ID into the connection settings.
Start giving commands to your AI client, treating it like a dedicated billing coordinator.
Who uses Harvest MCP
This MCP is essential for anyone whose job involves tracking billable hours or managing accounts receivable. It’s perfect for the project manager who hates context switching, the small agency owner running billing manually after hours, and operations leaders needing real-time visibility into time compliance.
Needs to pull up a summary of all logged time and associated client details during status calls without opening the Harvest dashboard.
Manages the entire billing cycle, from listing clients to creating draft invoices, all through conversational prompts.
Automates oversight of time entry compliance and flags upcoming invoice deadlines across multiple departments.
Benefits of connecting Harvest MCP
Eliminate manual data fetching. Instead of opening up ten different tabs to gather time logs, client lists, and project summaries, your agent pulls all the necessary data in a single conversation thread using list_time_entries or list_projects.
Streamline billing creation. You can request that the system create an invoice for any client and track its status—all without navigating to the invoicing section of Harvest. Use the create_invoice tool when you’re ready to bill.
Improve client data accuracy. Need to update a company address or name? Instead of logging into the web portal, simply tell your agent; it uses update_client to handle the change instantly.
Get project status on demand. You can ask for an overview of all active projects and their associated time logs immediately using list_projects combined with list_time_entries. Perfect for quick check-ins.
Never lose track of who you are billing. The agent can retrieve specific client information using get_client, ensuring your conversation always has the correct account details in front of you.
Harvest MCP use cases
The End-of-Month Billing Blitz
A small agency owner needs to reconcile time logs for three different clients before sending out invoices. Instead of logging into Harvest, filtering by client, and manually running multiple reports, they prompt their agent: 'List all time entries from the last 30 days.' The agent then compiles the data and prompts: 'Now create a draft invoice for Client X based on those hours,' using create_invoice.
The Status Meeting Recap
A project manager needs to quickly confirm the status of every active client during a call. They ask their agent to run through all projects and list associated clients. The agent uses list_projects and list_clients, giving the PM an instant, comprehensive overview without pulling up any dashboards.
Onboarding a New Account
An operations leader is adding a brand new retainer client. Instead of navigating to the account setup page, they simply tell their agent: 'Add Acme Corp.' The agent uses create_client, ensuring the record is immediately available for time tracking and future invoicing.
Auditing Client Records
A finance employee needs to verify a client's current status or check if their details are up-to-date. They ask the agent, 'What are the latest records for Acme Corp?' The agent uses get_client to retrieve all necessary detailed information instantly.
Harvest MCP tradeoffs
What to watch out for, and the recommended way to handle each one.
Treating it like a search engine
A user tries to manually list out every client name and then separately asks the agent for time entries. This is slow, repetitive, and requires multiple conversational turns.
Ask your AI agent to perform chained actions. Prompt: 'List all clients and show me their total logged time.' The agent uses list_clients and intelligently cross-references that data with list_time_entries in one go.
Ignoring the available tools
A user gets frustrated trying to manually update a client's details because they only know the name, not the ID. They give up and revert to spreadsheets.
Always let your agent handle updates. Use update_client by giving natural language instructions: 'Update Acme Corp’s address.' The MCP handles finding the record and applying the change.
Attempting complex financial logic
A user asks, 'How much money did we earn this quarter?' This requires complex calculations (e.g., subtracting expenses from income) that Harvest's core tools don't handle alone.
Use the MCP to gather raw data first. Get a list of all invoices using list_invoices, then pass that structured data into your AI agent for the final calculation.
When to use Harvest MCP
Use this Harvest MCP if your primary pain point is context switching when managing billing. If you spend time moving between your chat interface, a spreadsheet, and the Harvest web dashboard, this tool saves you steps by letting your agent execute those actions sequentially in one conversation.
Don't use this if you need to manage non-billing data (e.g., HR payroll records or inventory counts). If your workflow requires integrating with another system entirely outside of time tracking and client management, you need a different MCP connector for that specific service. This is strictly for Harvest functions like list_clients, create_invoice, and list_time_entries.
Frequently asked questions about Harvest MCP
Can Harvest MCP help me list all my clients? +
Yes, you can use list_clients to pull up every client record in your account. This lets you review who needs billing or who requires a profile update.
How do I create an invoice using the Harvest MCP? +
To generate an invoice, simply ask your agent to use the create_invoice tool. You'll need to specify which client the new bill should be for and if it’s a draft or final status.
Does Harvest MCP help with time tracking? What tools are available? +
Yes, you can view all tracked hours using list_time_entries. You can also see which projects are active by calling list_projects to provide context for your billing.
What if I need to change a client's details? +
You use the update_client tool. Just tell your agent what needs changing (e.g., 'Update Acme Corp's phone number') and it handles the modification.
Is Harvest MCP only for new clients? +
No, it manages the full lifecycle. You can retrieve details on existing accounts using get_client, as well as create brand-new ones with create_client.
Powerful workflows you can unlock today
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