Integration
Connect Postscript and Watermelon
When Subscriber Opted In fires in Postscript, your agent runs Add Contact in Watermelon, or New Contact in Watermelon to Create Custom Event in Postscript. 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 Postscript and Watermelon 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)Grok
Open grok.com/connectors, choose New Connector, then Custom, and paste the address. Grok signs you in in your browser.
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 Postscript and Watermelon can do together
From Postscript to Watermelon
When Subscriber Opted In in Postscript
then Add Contact in Watermelon
From Watermelon to Postscript
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 Postscript and Watermelon
Triggers and actions 7 triggers · 15 actions
- Subscriber Opted In
Triggers when a new subscriber opts in to the shop's Postscript messaging.
- Create Custom Event
Sends a custom event for a Postscript subscriber, for use in Postscript Flows.
- Find Subscriber
Finds a Postscript subscriber by email, phone number or Shopify customer ID and returns the first match.
- Get Subscriber
Returns one Postscript subscriber by ID, with their phone, email, tags, custom properties and subscription status.
- List Subscribers
Returns a page of the shop's Postscript subscribers, optionally sorted and filtered by subscription type.
- Redact Subscriber
Permanently redacts a Postscript subscriber's personal data and unsubscribes them.
- Unsubscribe Subscriber
Opts a Postscript subscriber out of all messaging.
- Update Subscriber
Updates a Postscript subscriber's email address and adds tags to them.
- Archive Conversation
Triggers when a Watermelon conversation is archived.
- Handover Conversation Agent
Triggers when a Watermelon conversation is handed over to a human agent (its assigned agent changes).
- Handover Conversation Team
Triggers when a Watermelon conversation is handed over to a team (its assigned team changes).
- New Contact
Triggers when a new contact is added in Watermelon.
- New Conversation
Triggers when a new conversation starts in Watermelon.
- Updated Contact
Triggers when a Watermelon contact is created or updated.
- Add Contact
Creates a new contact in Watermelon and returns its ID.
- Find Contact
Returns a Watermelon contact by its ID.
- Find Conversation
Returns a Watermelon conversation by its ID.
- Get conversation
Returns a single conversation by its ID, including its messages, tags, channel and status.
- Get message
Returns a single message by its ID, including its text, type, conversation and read status.
- Search Contacts
Searches Watermelon contacts for a value such as a name, email or phone number and returns the matches.
- Sends a Message
Sends a message in a Watermelon conversation, or starts a new conversation when no conversation ID is given, and returns the message ID.
- Updates an Existing Contact
Updates an existing Watermelon contact's name, email or phone number.
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
Postscript and Watermelon, answered
What can start an automation from Postscript?
Any of Postscript's 1 trigger in the catalog, including Subscriber Opted In. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Watermelon when something happens in Postscript?
Any of Watermelon's 8 actions, including Add Contact, Find Contact, Find Conversation and Get conversation. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Watermelon to Postscript?
Yes. When something happens in Watermelon, your agent can act in Postscript too. This page covers both directions: Watermelon's triggers and Postscript's actions are listed here as well.
Do I have to build a connector for Postscript or Watermelon?
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 Postscript and Watermelon 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.