Integration
Connect Castos and Watermelon
When New Episode fires in Castos, your agent runs Add Contact in Watermelon, or New Contact in Watermelon to Find Private Subscriber by Email in Castos. 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 Castos 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 Castos and Watermelon can do together
From Castos to Watermelon
When New Episode in Castos
then Add Contact in Watermelon
From Watermelon to Castos
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 Castos and Watermelon
Triggers and actions 9 triggers · 26 actions
- New Episode
Triggers when a new episode is added to a Castos podcast.
- New Podcast
Triggers when a new podcast is created in your Castos account.
- New Private Subscriber
Triggers when a new private subscriber is added to a Castos private podcast.
- Create Episode
Creates an episode on a Castos podcast, uploading its audio from a URL.
- Create Podcast
Creates a podcast in Castos and returns its ID.
- Create Private Subscriber
Adds a private subscriber to a Castos private podcast, giving them their own private feed.
- Delete Episode
Deletes an episode from a Castos podcast.
- Delete Podcast
Deletes a Castos podcast.
- Delete Private Subscription
Deletes a private subscriber's subscription record from a Castos private podcast.
- Find Private Subscriber by Email
Finds a Castos private subscriber by email and returns their subscriptions to your private podcasts.
- Get Episode
Returns one episode of a Castos podcast, with its title, show notes, publish date and audio file.
- Get Podcast
Returns one Castos podcast by its ID, including its title, description, RSS URL and author.
- Get Private Subscriber
Returns a Castos private subscriber by ID, with their subscriptions to your private podcasts.
- List Episodes
Returns the episodes of one Castos podcast.
- List Podcast Categories
Returns the podcast category names Castos accepts, such as "Business: Marketing".
- List Podcasts
Returns every podcast in the Castos account with its ID, title, type and whether its feed is protected.
- List Private Subscribers
Returns the private subscribers of a Castos private podcast, with each one's email, feed URL and status.
- Reactivate Private Subscriber
Reactivates a canceled private subscriber's access to a Castos private podcast, by their email.
- Revoke Private Subscriber
Cancels a private subscriber's subscription to a Castos private podcast, cutting off their private feed.
- Update Episode
Updates a Castos episode's details; only the fields you supply change.
- Update Podcast
Updates a Castos podcast's details; only the fields you supply change.
- 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
Castos and Watermelon, answered
What can start an automation from Castos?
Any of Castos's 3 triggers in the catalog, including New Episode, New Podcast and New Private Subscriber. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Watermelon when something happens in Castos?
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 Castos?
Yes. When something happens in Watermelon, your agent can act in Castos too. This page covers both directions: Watermelon's triggers and Castos's actions are listed here as well.
Do I have to build a connector for Castos 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 Castos 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.