Integration
Connect Kit and PostStack
When New Form Subscriber fires in Kit, your agent runs Add a contact in PostStack, or Contact Updated (instant) in PostStack to Add Subscriber to Form in Kit. 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 Kit and PostStack 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)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 Kit and PostStack can do together
From Kit to PostStack
When New Form Subscriber in Kit
then Add a contact in PostStack
From PostStack to Kit
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 Kit and PostStack
Triggers and actions 14 triggers · 38 actions
- New Form Subscriber
Triggers when a subscription occurs on a specific form.
- New Purchase
Triggers when a new purchase is added to your account.
- New Sequence Subscriber
Triggers when a subscriber is added to a sequence.
- New Subscriber
Triggers when a new subscriber is confirmed within your account (has completed any applicable double opt-ins).
- New Unsubscribe
Triggers when a subscriber unsubscribes from your emails.
- Subscriber Added to Tag
Triggers when a specific tag is added to a subscriber.
- Tag Removed From Subscriber
Triggers when a specific tag is removed from a subscriber.
- Add Subscriber to Form
Subscribe someone to a specific form.
- Add Tag to Subscriber
Add a subscriber to a specific tag.
- Create or Update Subscriber
Creates a Kit subscriber, or updates the first name and custom fields of an existing subscriber with the same email address. Returns the subscriber.
- Find Subscriber
Finds an existing confirmed subscriber by email.
- Get Subscriber
Returns one Kit subscriber by ID, with their name, email address, state and custom field values.
- List Tags for Subscriber
Lists the tags on a Kit subscriber, with each tag's ID, name and the date it was applied.
- Remove Tag From Subscriber
Remove a specific tag from a subscriber if they have it.
- Contact Deleted (instant)
Fires when a contact is deleted (event: contact.deleted).
- Contact Updated (instant)
Fires when a contact is updated (event: contact.updated).
- Email Bounced (instant)
Fires when an email bounces (event: email.bounced).
- Email Delivered (instant)
Fires when an email is delivered (event: email.delivered).
- New Contact (instant)
Fires when a contact is created (event: contact.created).
- New Inbound Email
Polls for newly received inbound emails.
- New Sent Email (instant)
Fires when an email is sent (event: email.sent).
- Add a broadcast
Create a new marketing broadcast.
- Add a contact
Create a new contact.
- Add a segment
Create a new manual contact segment.
- Add a template
Create a new email template.
- Add contacts to segment
Add contacts to an existing segment.
- Add suppression
Add an address to the suppression list.
- Cancel broadcast
Cancel an in-flight broadcast.
- Cancel email
Cancel a scheduled or queued email before it sends.
- Delete a contact
Delete a contact.
- Delete a template
Delete an email template.
- Get a contact
Fetch one contact by ID.
- Get a template
Fetch one email template by ID.
- Get broadcast
Retrieve one broadcast by its public id, including the HTML and text bodies that the list endpoint omits.
- Get email
Fetch one sent or queued email by ID.
- Get email events
Get the delivery event timeline for one email.
- Get inbound email
Fetch one received inbound email by ID.
- Import contacts
Bulk-import a CSV list of contacts.
- List broadcasts
List marketing broadcasts.
- List contacts
List contacts in the account.
- List emails
List sent, queued, and scheduled emails.
- List inbound emails
List emails received via inbound parsing.
- List segments
List contact segments.
- List suppressed addresses
List addresses on the suppression list.
- List templates
List email templates.
- Send an email
Send a transactional email through PostStack.
- Send broadcast
Start sending a broadcast to its recipients.
- Send emails in batch
Send up to 100 emails in a single request.
- Update a contact
Update an existing contact's fields.
- Update a template
Update an email template, creating a new version.
- Update email
Reschedule a queued email's send time.
- Validate email address
Check whether an email address is valid and deliverable.
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
Kit and PostStack, answered
What can start an automation from Kit?
Any of Kit's 7 triggers in the catalog, including New Form Subscriber, New Purchase, New Sequence Subscriber and New Subscriber. Describe the moment in plain language and your agent picks the right one.
What can your agent do in PostStack when something happens in Kit?
Any of PostStack's 31 actions, including Send an email, Send broadcast, Send emails in batch and Update a contact. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from PostStack to Kit?
Yes. When something happens in PostStack, your agent can act in Kit too. This page covers both directions: PostStack's triggers and Kit's actions are listed here as well.
Do I have to build a connector for Kit or PostStack?
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 Kit and PostStack 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.