Integration
Connect Castos to Mailopost
When New Episode fires in Castos, your agent runs Add campaign in Mailopost. 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 Mailopost 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 can start in Mailopost
When New Episode in Castos
then Add campaign in Mailopost
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 Mailopost
Triggers and actions 3 triggers · 36 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.
- Add campaign
Creates a draft email campaign addressed to recipient lists or a segment. Send it afterwards with Send campaign.
- Add list
Creates a new recipient list (group) in Mailopost with the given title.
- Add recipient
Adds a recipient (subscriber) to a Mailopost recipient list, optionally with parameter values and tags.
- Add template
Creates a single-send email template (in draft state) that can later be used to send personalized emails.
- Delete list
Deletes a recipient list (group) from your Mailopost account.
- Delete recipient
Deletes a recipient from a Mailopost recipient list (group).
- Find recipients
Finds a recipient by email address and returns every recipient group they belong to, with their recipient id in each.
- Get campaign
Returns a campaign's details, including its sender, content, status, recipient count, billing info and delivery statistics.
- Get list
Returns the id and name of a recipient list (group).
- Get recipient
Returns one recipient in a recipient group, including email, status, parameter values and tags.
- Get template
Returns a single-send email template's details: name, subject, sender, moderation state and substitution parameters.
- List lists
Returns the recipient lists (groups) in your Mailopost account, with each list's id and title.
- List recipients
Returns the recipients in a Mailopost recipient group, with their status, parameter values and tags.
- List templates
Returns the single-send email templates in your Mailopost account.
- Send campaign
Sends a previously created draft campaign to its recipients immediately and returns the campaign with its new status.
- Update list
Renames an existing recipient group (list) in Mailopost.
- Update recipient
Updates a recipient's email, parameter values and tags in a recipient list.
- Update template
Updates an existing single-send email template. Only the fields you fill in are changed.
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
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Questions
Castos and Mailopost, 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 Mailopost when something happens in Castos?
Any of Mailopost's 18 actions, including Send campaign, Update list, Update recipient and Update template. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Mailopost to Castos?
Mailopost has no triggers in the catalog today, so automations start in Castos. If you need the other direction, ask: your agent reads Mailopost's API documentation and adds it.
Do I have to build a connector for Castos or Mailopost?
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 Mailopost 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.