Integration
Connect Harvest and Mailbox Power
When New Client fires in Harvest, your agent runs Create or Update Contact in Mailbox Power, or New Contact Added to Group in Mailbox Power to Create Contact in Harvest. Describe the whole flow and it is built, tested on every scenario and kept running.
What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.
Build solutions, not workarounds.
What do you want Harvest and Mailbox Power to do together?
Ask the assistant
Connect your AI client
Give your AI client this address.
https://mcp.apiant.aiOne connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser.
Set it up in your client
Claude Code
Run this in the directory you want to work in.
claude mcp add --transport http -s project apiant-ai https://mcp.apiant.aiStart Claude Code there, approve the server, and sign in in the browser page it opens.
Claude Code guide (opens in a new tab)Claude, web and desktop
Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first.
Setup guide (opens in a new tab)Cursor
Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser.
Setup guide (opens in a new tab)Zed
Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.
Setup guide (opens in a new tab)Codex and the ChatGPT desktop app
Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in.
Setup guide (opens in a new tab)Any other MCP client
Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection.
Setup guide (opens in a new tab)Example flows
What Harvest and Mailbox Power can do together
From Harvest to Mailbox Power
When New Client in Harvest
then Create or Update Contact in Mailbox Power
From Mailbox Power to Harvest
Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships.
Everything your agent can do with Harvest and Mailbox Power
Triggers and actions 18 triggers · 16 actions
- Invoice Paid
Triggers when an invoice is fully paid.
- Invoice Sent
Triggers when an invoice is sent or marked as sent.
- New Client
Triggers when a new client is added.
- New Contact
Triggers when new contact is added.
- New Expense
Triggers when a new expense is added.
- New Invoice
Triggers when an invoice is created.
- New Project
Triggers when a project is created.
- New Task
Triggers when a new task is added.
- New Time Entry
Triggers when a time entry is created.
- New User
Triggers when a new User is added.
- New User Assignment
Triggers when a user is assigned to a project.
- Timer Started
Triggers when a timer is started.
- Timer Stopped
Triggers when a timer is stopped.
- Updated Client
Triggers when a client is updated.
- Updated Invoice
Triggers when an invoice is updated.
- Updated Time Entry
Triggers when a time entry is updated.
- Create Client
Creates a Client
- Create Contact
Creates a Contact
- Create Project
Creates a Project
- Create Task
Creates a Task and optionally assigns it to a project
- Create Time Entry
Creates a Time Entry with duration
- Create Time Entry (Start & End Times)
Creates a Time Entry with start and end times
- Find Client
Finds a client by name or ID
- Find Invoice
Finds an invoice by ID
- Find Project
Finds a project by name
- Find Task
Finds a task by name
- Start Timer
Creates and starts a timer for a given date
- Stop Timer
Stops any running timers
- New Contact Added to Group
Triggers when a contact is added to the selected Mailbox Power contact group.
- Updated Contact
Triggers when a contact in Mailbox Power is added or any of its details change.
- Create or Update Contact
Creates a contact in Mailbox Power, or updates the existing contact whose name and address match.
- Delete Contact
Deletes a contact from your Mailbox Power account.
- List contacts
Returns every contact in the Mailbox Power account, including address, contact details and group membership.
- Remove Contact From Group
Removes a contact from a Mailbox Power contact group.
No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.
Each app on its own
Reviews
What our customers say
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Questions
Harvest and Mailbox Power, answered
What can start an automation from Harvest?
Any of Harvest's 16 triggers in the catalog, including New Client, New Contact, New Expense and New Invoice. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Mailbox Power when something happens in Harvest?
Any of Mailbox Power's 4 actions, including Create or Update Contact, List contacts, Delete Contact and Remove Contact From Group. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Mailbox Power to Harvest?
Yes. When something happens in Mailbox Power, your agent can act in Harvest too. This page covers both directions: Mailbox Power's triggers and Harvest's actions are listed here as well.
Do I have to build a connector for Harvest or Mailbox Power?
No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running.
Can my AI client use Harvest and Mailbox Power without building an automation?
Yes. With your AI client connected to APIANT, ask it to do something in either app once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both.
What happens when something fails?
Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships.
Is there a free plan?
Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.