Integration
Connect Castos and Instantly
When New Episode fires in Castos, your agent runs Add lead list in Instantly, or New Event in Instantly 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 Instantly 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 Instantly can do together
From Castos to Instantly
When New Episode in Castos
then Add lead list in Instantly
When New Podcast in Castos
then Add Lead to Campaign in Instantly
From Instantly to Castos
When New Event in Instantly
then Find Private Subscriber by Email in Castos
When New Event in Instantly
then Create Episode in 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 Instantly
Triggers and actions 4 triggers · 40 actions
Trigger
New EpisodeTriggers when a new episode is added to a Castos podcast.
Trigger
New PodcastTriggers when a new podcast is created in your Castos account.
Trigger
New Private SubscriberTriggers when a new private subscriber is added to a Castos private podcast.
Action
Create EpisodeCreates an episode on a Castos podcast, uploading its audio from a URL.
Action
Create PodcastCreates a podcast in Castos and returns its ID.
Action
Create Private SubscriberAdds a private subscriber to a Castos private podcast, giving them their own private feed.
Action
Delete EpisodeDeletes an episode from a Castos podcast.
Action
Delete PodcastDeletes a Castos podcast.
Action
Delete Private SubscriptionDeletes a private subscriber's subscription record from a Castos private podcast.
Action
Find Private Subscriber by EmailFinds a Castos private subscriber by email and returns their subscriptions to your private podcasts.
Action
Get EpisodeReturns one episode of a Castos podcast, with its title, show notes, publish date and audio file.
Action
Get PodcastReturns one Castos podcast by its ID, including its title, description, RSS URL and author.
Action
Get Private SubscriberReturns a Castos private subscriber by ID, with their subscriptions to your private podcasts.
Action
List EpisodesReturns the episodes of one Castos podcast.
Action
List Podcast CategoriesReturns the podcast category names Castos accepts, such as "Business: Marketing".
Action
List PodcastsReturns every podcast in the Castos account with its ID, title, type and whether its feed is protected.
Action
List Private SubscribersReturns the private subscribers of a Castos private podcast, with each one's email, feed URL and status.
Action
Reactivate Private SubscriberReactivates a canceled private subscriber's access to a Castos private podcast, by their email.
Action
Revoke Private SubscriberCancels a private subscriber's subscription to a Castos private podcast, cutting off their private feed.
Action
Update EpisodeUpdates a Castos episode's details; only the fields you supply change.
Action
Update PodcastUpdates a Castos podcast's details; only the fields you supply change.
Trigger
New EventTriggers when an Instantly event occurs, such as an email sent, a reply received, or a lead status change.
Action
Activate campaignStarts a campaign, or resumes a paused one, and returns the updated campaign.
Action
Add campaignCreates a new Instantly campaign with its sending schedule, email sequence and sending options. Returns the created campaign.
Action
Add lead listCreates a new lead list in Instantly for storing leads.
Action
Add Lead to CampaignAdds a lead to an Instantly campaign, with their contact details, personalization and custom variables. Returns the created lead.
Action
Add Tags to CampaignsAssigns one or more custom tags to one or more campaigns.
Action
Add to BlocklistAdds an email address or domain to the workspace's blocklist so it no longer receives emails.
Action
Create a New TagCreates a new custom tag in your Instantly workspace for organizing accounts and campaigns.
Action
Delete blocklist entryDeletes a blocked email or domain entry from your Instantly block list, returning the removed entry.
Action
Delete leadPermanently deletes a lead from your Instantly workspace and returns the deleted lead.
Action
Find LeadFinds leads in your Instantly workspace by email address or search term, optionally narrowed to a campaign, list or lead status. Returns the matching leads and the first match.
Action
Get Blocklist EntryReturns a single block list entry (a blocked email address or domain) by its ID.
Action
Get campaignReturns a campaign's full details, including its schedule, sequences, sending accounts and settings.
Action
Get leadReturns a single Instantly lead by its ID, including contact details, campaign, status, engagement counts and custom variables.
Action
List campaignsReturns the campaigns in your Instantly workspace, optionally filtered by name, tags, status or AI Sales Agent.
Action
List lead listsReturns the lead lists in your Instantly workspace, optionally filtered by name or by whether they run enrichment.
Action
List leadsReturns leads from your Instantly workspace, optionally filtered by campaign, list, status, search term or email address.
Action
List Tag MappingsReturns the tag assignments in the workspace, showing which custom tags are attached to which email accounts and campaigns.
Action
Pause campaignStops (pauses) a running campaign so it no longer sends emails, and returns the updated campaign.
Action
Remove Lead From CampaignRemoves one or more leads from an Instantly campaign, deleting them from that campaign.
Action
Remove Tags From CampaignsRemoves one or more custom tags from Instantly campaigns.
Action
Update leadUpdates an existing lead's details in Instantly, such as name, company, phone, interest status and custom variables, and returns the updated lead.
Action
Update Lead StatusUpdates the interest status of a lead in Instantly (for example Interested, Meeting booked, or Not interested), optionally scoped to one campaign or list.
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 Instantly, 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 Instantly when something happens in Castos?
Any of Instantly's 22 actions, including Create a New Tag, Update lead, Update Lead Status and Activate campaign. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Instantly to Castos?
Yes. When something happens in Instantly, your agent can act in Castos too. This page covers both directions: Instantly's triggers and Castos's actions are listed here as well.
Do I have to build a connector for Castos or Instantly?
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 Instantly 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.