Integration
Connect Lettr and TRYTN
When New email event fires in Lettr, your agent runs Add payment in TRYTN, or New Merchandise Item in TRYTN to Add contact in Lettr. 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 Lettr and TRYTN 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 Lettr and TRYTN can do together
From Lettr to TRYTN
When New email event in Lettr
then Add payment in TRYTN
From TRYTN to Lettr
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 Lettr and TRYTN
Triggers and actions 5 triggers · 74 actions
- New email event
Triggers instantly when Lettr reports an email event, such as a delivery, bounce, open, click, spam complaint or unsubscribe.
- Add audience list
Creates a new audience list in Lettr with the given name and returns the created list.
- Add contact
Adds a new contact to your Lettr audience, optionally placing it on a list, setting custom properties, and sending a double opt-in confirmation email.
- Add contact to list
Adds an existing contact to one of your audience lists. Succeeds whether the contact was newly added or was already on the list.
- Add template
Creates a new email template in Lettr from HTML or Topol editor JSON content, and publishes its first version with the merge tags found in the content.
- Create campaign
Creates a draft email campaign in Lettr with its subject, sender, content and audience, ready to send or schedule.
- Create webhook
Creates a Lettr webhook that sends email delivery and engagement events to a URL.
- Delete contact
Permanently deletes a contact from your Lettr audience.
- Delete webhook
Deletes a Lettr webhook so it stops sending events.
- Get campaign
Returns one Lettr campaign with its settings, audience, status and delivery stats.
- Get contact
Returns a single audience contact, including its subscription status, custom properties, lists and topics.
- Get email
Returns a sent email's details — sender, subject, recipients, delivery state — and all of its delivery, bounce, open and click events.
- Get template
Returns a single email template by its slug, including its HTML, editor content, purpose, status and version details.
- Get webhook
Gets one Lettr webhook by ID: its name, URL, event types, whether it is enabled and its last delivery status.
- List audience lists
Returns all audience lists in your Lettr team, with each list's name and contact count.
- List campaigns
Returns the email campaigns in your Lettr account, optionally only those with a given status.
- List contacts
Returns the contacts in your Lettr audience, optionally narrowed by a search term, subscription status, list or segment.
- List domains
Returns every sending domain registered in your Lettr account, with its approval status, whether it can send, and its DNS verification state.
- List emails
Returns emails sent from your Lettr account in the last few days, optionally filtered by recipient address and date range.
- List templates
Returns the email templates in a Lettr project, optionally limited to one folder or to transactional or campaign templates.
- Schedule campaign
Schedules a Lettr campaign to send at a future time, or moves an already scheduled campaign to a new time.
- Schedule email
Schedules a transactional email for delivery at a future time (at least 5 minutes ahead and within 30 days), using your own content or a saved template.
- Send campaign
Sends a draft Lettr campaign to its audience right away. The campaign needs a subject, a sender on a verified domain, and content.
- Send Email
Sends a transactional email through Lettr to one or more recipients, using your own HTML/text content or a saved template.
- Send Email Template
Sends an email using one of your saved Lettr templates, filling its merge variables with the values you provide. Returns the send's request ID and how many recipients were accepted.
- Unschedule campaign
Cancels a scheduled Lettr campaign send and returns the campaign to draft.
- Update contact
Updates an existing contact in your Lettr audience, changing its email address, subscription status or custom properties. Fields left blank are not changed.
- New Merchandise Item
Triggers when a merchandise item is purchased.
- New Scheduled Item
Triggers when a scheduled item (a booking for a dated activity) is purchased.
- New Transaction
Triggers when a new transaction (payment) is made in your TRYTN business.
- New Unscheduled Item
Triggers when an unscheduled item (an item with no fixed date) is purchased.
- Add add-on
Creates a new add-on for your TRYTN business, or updates the existing add-on with the same ID.
- Add affiliate
Creates a new affiliate in your TRYTN business, or updates the affiliate if one with the same ID already exists.
- Add asset
Creates a new asset (such as equipment or a resource with limited quantity) in your TRYTN business, or updates the asset if one with the same ID already exists.
- Add booking
Creates a new booking for an activity occurrence and timeslot, or updates an existing booking with the same ID.
- Add cart
Creates a new cart in TRYTN, or updates an existing cart with the same ID.
- Add payment
Creates a payment record for an existing TRYTN cart, with buyer details and optional charge amount.
- Add policy
Creates a cancellation policy in your TRYTN business, or updates the policy with the same ID if it already exists.
- Add promotion
Creates a promotion (discount code) for your TRYTN business, or updates it if a promotion with that ID already exists.
- Add tax rate
Creates a tax rate or fee for the business, or updates it if the ID already exists.
- Add voucher campaign
Creates a voucher campaign in TRYTN, or updates it if a campaign with the same ID already exists.
- Check in participant
Checks in participants for a booking on a specific activity occurrence and timeslot.
- Delete Add-On
Deletes a add-on from your TRYTN business.
- Delete Affiliate
Deletes a affiliate from your TRYTN business.
- Delete Asset
Deletes a asset from your TRYTN business.
- Delete Category
Deletes a category from your TRYTN business.
- Delete Policy
Deletes a policy from your TRYTN business.
- Delete Product
Deletes a product from your TRYTN business.
- Delete Promotion
Deletes a promotion from your TRYTN business.
- Delete Question
Deletes a question from your TRYTN business.
- Delete Tax Rate
Deletes a tax rate from your TRYTN business.
- Delete Voucher Campaign
Deletes a voucher campaign from your TRYTN business.
- Find carts
Searches for carts in TRYTN by text, source, item presence or last-updated date range.
- Get Activity Product
Returns one activity product by its ID.
- Get Add-On
Returns one add-on from your TRYTN business by its ID.
- Get Affiliate
Returns one affiliate from your TRYTN business by its ID.
- Get Asset
Returns one asset from your TRYTN business by its ID.
- Get Cart
Returns one shopping cart by its ID.
- Get Category
Returns one category from your TRYTN business by its ID.
- Get Merchandise Product
Returns one merchandise product by its ID.
- Get Payment
Returns one payment (transaction) by its ID.
- Get Policy
Returns one policy from your TRYTN business by its ID.
- Get Promotion
Returns one promotion from your TRYTN business by its ID.
- Get Question
Returns one question from your TRYTN business by its ID.
- Get Tax Rate
Returns one tax rate from your TRYTN business by its ID.
- Get Unscheduled Product
Returns one unscheduled product by its ID.
- Get Voucher Campaign
Returns one voucher campaign from your TRYTN business by its ID.
- List Activity Products
Returns all activity products in your TRYTN business.
- List Add-Ons
Returns all add-ons in your TRYTN business.
- List Affiliates
Returns all affiliates in your TRYTN business.
- List Assets
Returns all assets in your TRYTN business.
- List Categories
Returns all categories in your TRYTN business.
- List Merchandise Products
Returns all merchandise products in your TRYTN business.
- List Policies
Returns all policies in your TRYTN business.
- List Promotions
Returns all promotions in your TRYTN business.
- List Questions
Returns all questions in your TRYTN business.
- List Tax Rates
Returns all tax rates in your TRYTN business.
- List Unscheduled Products
Returns all unscheduled products in your TRYTN business.
- List Voucher Campaigns
Returns all voucher campaigns in your TRYTN business.
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
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Questions
Lettr and TRYTN, answered
What can start an automation from Lettr?
Any of Lettr's 1 trigger in the catalog, including New email event. Describe the moment in plain language and your agent picks the right one.
What can your agent do in TRYTN when something happens in Lettr?
Any of TRYTN's 48 actions, including Add add-on, Add affiliate, Add asset and Add booking. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from TRYTN to Lettr?
Yes. When something happens in TRYTN, your agent can act in Lettr too. This page covers both directions: TRYTN's triggers and Lettr's actions are listed here as well.
Do I have to build a connector for Lettr or TRYTN?
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 Lettr and TRYTN 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.