Integration
Connect Zoho Billing to Retell AI
When something happens in Zoho Billing, your agent does the next thing in Retell AI. 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 Zoho Billing and Retell AI to do together?
Ask the assistant
Connect your AI client
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 Zoho Billing can start in Retell AI
When New Credit Note in Zoho Billing
then Add Agent in Retell AI
When New Customer in Zoho Billing
then Create Knowledge Base in Retell AI
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 Zoho Billing and Retell AI
Triggers and actions 14 triggers · 54 actions
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.
Action
Add AgentCreate a new Retell AI voice agent attached to a response engine (Retell LLM, custom LLM, or conversation flow) and a voice.
Action
Create Knowledge BaseCreate a new Retell AI knowledge base from texts, URLs and/or a file.
Action
Create Retell LLMCreate a new Retell LLM Response Engine that can be attached to an agent. This is used to generate response output for the agent.
Action
Delete AgentDeletes an existing Retell AI agent, including all of its versions.
Action
Delete Knowledge BaseDelete an existing knowledge base.
Action
Delete Phone NumberDelete a phone number from your Retell AI account.
Action
Delete Retell LLMDelete a Retell LLM response engine.
Action
Get a CallRetrieves the full details of a Retell AI call (phone or web): status, transcript, recording links, post-call analysis, cost and latency.
Action
Get an AgentRetrieve the full configuration of a Retell AI voice agent.
Action
Get a Phone NumberRetrieve the details of one phone number in your Retell AI account, including its bound agents, nickname and webhook settings.
Action
Get a Retell LLMRetrieve the details of a Retell LLM response engine, including its prompt, model, tools and states.
Action
Get a VoiceRetrieve the details of a single Retell AI voice: its name, provider, accent, gender, age and a preview audio link.
Action
Get ConcurrencyGets your Retell AI organization's current number of ongoing calls and its concurrency limits.
Action
Get Knowledge BaseRetrieve the details of a knowledge base, including its processing status and sources.
Action
Import Phone NumberImport a phone number from your own telephony provider (for example a Twilio elastic SIP trunk) into Retell AI and optionally bind agents to it.
Action
List AgentsLists the voice and chat agents in the Retell AI account, optionally filtered by channel or by a name/id search.
Action
List CallsList calls in the Retell AI account, newest first by default, optionally filtered by agent, status, direction, numbers, time range and more. Returns up to 1000 calls; transcripts and recording URLs are not included (use Get a Call for those).
Action
List Knowledge BasesList all knowledge bases in the Retell AI account.
Action
List Phone NumbersLists the phone numbers in your Retell AI account (up to 1000).
Action
List Retell LLMsLists the Retell LLM response engines in the account.
Action
List VoicesList all voices available to the Retell AI account.
Action
Make a Phone CallStart a new outbound phone call from one of your Retell numbers, handled by a Retell voice agent.
Action
Register Phone CallRegister a phone call placed through your own (custom) telephony, so Retell issues a call id your telephony can connect the audio to.
Action
Update AgentUpdates an existing Retell AI voice agent's latest draft version. Only the fields you fill in are changed.
Action
Update CallUpdate the metadata, data storage setting or custom attributes of an existing Retell AI call.
Action
Update Phone NumberUpdates the agents, nickname, webhooks, country restrictions, SIP trunk and fallback settings of a phone number in Retell AI. Only the fields you fill in are changed.
Action
Update Retell LLMUpdate an existing Retell LLM response engine's configuration (prompt, model, etc).
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
Zoho Billing and Retell AI, answered
What can start an automation from Zoho Billing?
Any of Zoho Billing's 14 triggers in the catalog, including New Credit Note, New Customer, New Invoice and New Item. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Retell AI when something happens in Zoho Billing?
Any of Retell AI's 27 actions, including Create Knowledge Base, Create Retell LLM, Update Agent and Update Call. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Retell AI to Zoho Billing?
Retell AI has no triggers in the catalog today, so automations start in Zoho Billing. If you need the other direction, ask: your agent reads Retell AI's API documentation and adds it.
Do I have to build a connector for Zoho Billing or Retell AI?
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.