Integration
Connect Harpoon and Zoho Billing
When something happens in Harpoon or Zoho Billing, your agent does the next thing in the other. Describe it 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 Harpoon and Zoho Billing to do together?
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Give your AI client this address.
https://mcp.apiant.aiAny 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 Harpoon and Zoho Billing can do together
From Harpoon to Zoho Billing
When New Client in Harpoon
then Add Charge in Zoho Billing
When New Contact in Harpoon
then Create a New Quote in Zoho Billing
From Zoho Billing to Harpoon
When New Credit Note in Zoho Billing
then Add Note in Harpoon
When New Customer in Zoho Billing
then Add Credit Entry in Harpoon
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 Harpoon and Zoho Billing
Triggers and actions 23 triggers · 73 actions
Trigger
New ClientTriggered when a new client is created in Harpoon.
Trigger
New ContactTriggered when a new contact is created in Harpoon.
Trigger
New ExpenseTriggered when a new expense is created in your Harpoon account.
Trigger
New Expense CategoryTriggered when a new expense category is created in Harpoon.
Trigger
New InvoiceTriggered when a new invoice is created in Harpoon.
Trigger
New PaymentTriggered when a new payment is recorded in your Harpoon account.
Trigger
New ProjectTriggered when a new project is created in Harpoon.
Trigger
New Task CategoryTriggered when a new task category is added in your Harpoon account.
Trigger
New Time EntryTriggered when a new time entry is logged in Harpoon.
Action
Add Credit EntryCreates a new credit entry on a client's account in Harpoon, recording an amount, a date and an optional note or originating invoice. Returns the credit entry that was created.
Action
Add InvoiceCreates a new invoice in Harpoon for a client or project, with an invoice number, issue date, and optional line items. Returns the invoice that was created.
Action
Add Lead SourceCreates a new lead source in Harpoon, so new clients can be tagged with where they came from. Returns the lead source that was created.
Action
Add NoteAdds a note to a client, project or invoice in Harpoon. Returns the note that was created.
Action
Add TeamCreates a new team in your Harpoon account. Harpoon populates the new team from your account details; the API accepts no team attributes on creation.
Action
Clone Time EntryCreates a copy of an existing time entry in Harpoon. The copy keeps the original's project, task and description, and starts with today's date and zero hours logged.
Action
Create ContactCreates a contact person under a Harpoon client, with their name, email address, and phone number. Returns the contact that was created.
Action
Create ExpenseRecords a one-off expense in Harpoon with its date, amount, and vendor, optionally attributed to a client, project, or expense category. Returns the expense that was created.
Action
Create Expense CategoryCreates a new expense category in your Harpoon account so expenses can be grouped under it.
Action
Create ProjectCreates a project in Harpoon for a client, with its budget, rate, and start and end dates. Returns the project that was created.
Action
Create Time EntryLogs hours worked in Harpoon for a team member on a given date, optionally against a client or project. Returns the time entry that was created.
Action
Delete ClientDeletes a client from your Harpoon account.
Action
Delete ExpensePermanently deletes an expense from your Harpoon account.
Action
Delete InvoicePermanently removes an invoice from Harpoon. Returns Harpoon's confirmation that the invoice was deleted.
Action
Delete NoteDeletes a note from your Harpoon account.
Action
Delete Recurring ExpenseDeletes a recurring expense template from Harpoon by its id, so it stops generating new expenses.
Action
Delete Recurring InvoiceStops and removes a recurring invoice schedule in Harpoon so it no longer generates invoices. Returns Harpoon's confirmation that it was deleted.
Action
Delete Time EntryDeletes a time entry from your Harpoon account.
Action
Get ClientReturns a single client from your Harpoon account, including its name, contact details and other stored attributes.
Action
Get Client CreditsReturns a client's credit entries in Harpoon, along with the credit still available on the account.
Action
Get ContactReturns a single Harpoon contact, including their name, email address, phone number, and the client they belong to.
Action
Get EstimateReturns a single estimate from your Harpoon account, including its client, line items, totals and status.
Action
Get ExpenseReturns a single expense from your Harpoon account, including its amount, date, vendor, category and the client or project it is attached to.
Action
Get Expense CategoryReturns a single Harpoon expense category with every detail it carries, including its name and budget settings.
Action
Get InvoiceFetches one invoice from Harpoon by its id, with its client, line items and payment totals. An error occurs if the invoice is not found.
Action
Get Lead SourceReturns a single lead source from your Harpoon account.
Action
Get ProjectReturns a single project from your Harpoon account, including its client, budget and status.
Action
Get Recurring ExpenseFetches one recurring expense template from Harpoon by its id, with its vendor, amount, frequency and schedule. An error occurs if it is not found.
Action
Get Recurring InvoiceReturns a single recurring invoice schedule from Harpoon, including its client, frequency, dates, and line items.
Action
Get TaskReturns a single task category from your Harpoon account, including its name and hourly rate.
Action
Get TeamReturns a single team from your Harpoon account, including its name, email address, phone, address, owner and whether it is active.
Action
Get Time EntryReturns a single tracked time entry from your Harpoon account, including its date, hours, client, project and notes.
Action
List ContactsReturns the contacts in your Harpoon account, including each contact's name, email address and phone number.
Action
List EstimatesReturns the estimates in a Harpoon account, optionally narrowed to a year, client, project, status, or search text.
Action
List Expense CategoriesReturns the expense categories set up in Harpoon, each with its budget settings.
Action
List ExpensesReturns the expenses in your Harpoon account, optionally narrowed by date range, client, project, category, billing status or search text.
Action
List InvoicesReturns the invoices in your Harpoon account, optionally narrowed by year, client, project, status or a search term.
Action
List ProjectsReturns the projects in a Harpoon account, with their client, budget, rate, and dates.
Action
List TeamsReturns the teams in your Harpoon account, along with the total number of teams found.
Action
List Time EntriesReturns time entries from your Harpoon account — either the timers running now or logged history for a date range — optionally narrowed by client, project, task, team member or billing status.
Action
Update ExpenseUpdates an existing expense in your Harpoon account. Only the values you supply are changed.
Action
Update InvoiceUpdates an existing invoice in your Harpoon account. Only the values you supply are changed.
Action
Update ProjectUpdates an existing project in Harpoon — its name, client, billing type, status, dates, budget and task rates. Returns the updated project.
Action
Update Recurring ExpenseUpdates a recurring expense in Harpoon — its vendor, amount, frequency, category, dates, and status. Anything left blank keeps its current value. Returns the updated recurring expense.
Action
Update Recurring InvoiceUpdates an existing recurring invoice template in your Harpoon account. Only the values you supply are changed.
Action
Update Time EntryUpdates an existing time entry in Harpoon — its date, hours, description, project, task or billing state.
Trigger
Cancel SubscriptionTriggered when a subscription is cancelled
Trigger
New Credit NoteTriggered when a new credit note is created
Trigger
New CustomerTriggered when a new customer is created
Trigger
New InvoiceFires once for each new invoice created in the selected Zoho Billing organization.
Trigger
New ItemFires when a new item is added in Zoho Billing.
Trigger
New QuoteFires once for each new quote created in the selected Zoho Billing organization.
Trigger
New SubscriptionFires once for each new subscription created in the selected Zoho Billing organization.
Trigger
Payment FailureFires when an online payment attempt fails in Zoho Billing (for example a declined card charge).
Trigger
Payment SuccessFires when a new successful customer payment is recorded in Zoho Billing.
Trigger
Subscription About to RenewFires once per billing term for each live subscription that is scheduled to renew, carrying the date of its upcoming renewal.
Trigger
Subscription ActivationFires when a subscription is activated (becomes live) in the selected Zoho Billing organization.
Trigger
Updated CustomerTriggered when a customer is created or updated.
Trigger
Updated InvoiceTriggered when an invoice is created or updated.
Trigger
Void InvoiceFires once for each invoice that is voided in the selected Zoho Billing organization.
Action
Add ChargeCharge a one-time amount against a Zoho Billing subscription. Creates an invoice for the charge, or adds it to the subscription's unbilled charges.
Action
Associate CouponApplies a coupon to an existing subscription in Zoho Billing.
Action
Cancel Invoice WriteOffCancels the write-off on an invoice in Zoho Billing, restoring its unpaid balance.
Action
Cancel SubcriptionCancels a Zoho Billing subscription, either immediately or at the end of the current term.
Action
Create a New QuoteCreate a New Quote for a Customer
Action
Create Credit NoteCreates a credit note for a customer in Zoho Billing.
Action
Create CustomerCreates a new customer.
Action
Create New InvoiceCreates an invoice for a customer in Zoho Billing.
Action
Create New ItemCreate New Item for One time Invoices
Action
Create SubscriptionCreates a new subscription in Zoho Billing, either for an existing customer or for a new customer created in the same call.
Action
Disassociate CouponRemoves the coupon currently applied to a Zoho Billing subscription.
Action
Email an InvoiceEmails an existing invoice to the recipients you specify, with your own subject and message.
Action
Fetch CustomerRetrieve the details of an existing customer in Zoho Billing.
Action
Fetch InvoiceRetrieve the details of a single invoice by its id.
Action
Fetch SubscriptionRetrieve the details of a subscription by its id.
Action
Find CustomerFinds Zoho Billing customers whose email address matches the one supplied, returning the first match and the full list of matches.
Action
Find InvoiceReturns the invoices whose invoice number matches the one you supply.
Action
Find SubscriptionFinds subscriptions by subscription number, customer, or reference, optionally narrowed by status.
Action
Invoice WriteOffWrites off the unpaid balance of a Zoho Billing invoice.
Action
Mark Invoice as SentMarks a draft invoice as sent by changing its status to open, without emailing it to the customer.
Action
Postpone RenewalPostpones a subscription's next renewal (billing) date to a later date. No prorated charges are applied.
Action
Reactivate SubscriptionReactivates a non-renewing Zoho Billing subscription so it keeps renewing for the given number of billing cycles.
Action
Update CustomerUpdate an existing customer.
Action
Update Customer StatusMarks a Zoho Billing customer as active or inactive.
Action
Update InvoiceUpdate an existing invoice
Action
Update SubscriptionUpdates the existing subscription
Action
Void InvoiceMarks an invoice as void in Zoho Billing.
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
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Questions
Harpoon and Zoho Billing, answered
What can start an automation from Harpoon?
Any of Harpoon's 9 triggers in the catalog, including New Client, New Contact, New Expense and New Expense Category. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Zoho Billing when something happens in Harpoon?
Any of Zoho Billing's 27 actions, including Create a New Quote, Create Credit Note, Create Customer and Create New Invoice. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Zoho Billing to Harpoon?
Yes. When something happens in Zoho Billing, your agent can act in Harpoon too. This page covers both directions: Zoho Billing's triggers and Harpoon's actions are listed here as well.
Do I have to build a connector for Harpoon or Zoho Billing?
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.
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.