Integration
Connect Assignar and Lettr
When New Activity fires in Assignar, your agent runs Add contact in Lettr, or New email event in Lettr to Update Contact in Assignar. 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 Assignar and Lettr 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 Assignar and Lettr can do together
From Assignar to Lettr
When New Activity in Assignar
then Add contact in Lettr
From Lettr to Assignar
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 Assignar and Lettr
Triggers and actions 19 triggers · 60 actions
- New Activity
Triggers when a new activity is created.
- New Asset
Triggers when a new asset is created.
- New Charge Code
Triggers when a new charge code is created.
- New Client
Triggers when a new client is created.
- New Contact
Triggers when a new contact is created.
- New Digital Docket
Triggers when a new digital docket is submitted.
- New Order
Triggers when a new work order is created.
- New Order Task
Triggers when a task is added to a work order.
- New Project
Triggers when a new project is created.
- New Site Diary
Triggers when a new site diary is created.
- New Skill
Triggers when a new skill is created.
- New Supplier
Triggers when a new supplier is created.
- New Task
Triggers when a new task is created.
- New Timesheet
Triggers when a new timesheet is created.
- New User
Triggers when a new user is created.
- Updated Order
Triggers when a work order is created or changed.
- Updated Project
Triggers when a project is created or changed.
- Updated User
Triggers when a user is created or changed.
- Create User Competency
Gives a user an existing competency.
- Create User Induction
Records an induction for a user.
- Find Activity
Returns activities matching the values you give.
- Find Asset
Returns assets matching the values you give.
- Find Asset by Id
Returns one asset by its Assignar ID.
- Find Charge Code
Returns charge codes matching the values you give.
- Find Charge Items
Returns charge items matching the values you give.
- Find Client
Returns clients matching the values you give.
- Find Competency
Returns competencies matching the values you give.
- Find Contact
Returns contacts matching the values you give.
- Find Digital Docket
Returns one digital docket by its ID.
- Find Induction
Returns inductions matching the values you give.
- Find Order
Returns one work order by its ID.
- Find Order Charge Items
Returns the charge items on a work order.
- Find Order Tasks
Returns the tasks on a work order.
- Find Project
Returns projects matching the values you give.
- Find Relational Contact
Returns the contacts linked to a client.
- Find Supplier
Returns suppliers matching the values you give.
- Find Tag
Returns tags matching the values you give.
- Find Task
Returns tasks matching the values you give.
- Find Timesheet
Returns one timesheet with its full details.
- Find User
Returns users matching the values you give.
- Find User Competency
Returns a user's competencies.
- Find User Induction
Returns a user's inductions.
- Update Activity
Updates an activity.
- Update Charge Code
Updates a charge code.
- Update Client
Updates a client.
- Update Contact
Updates a contact.
- Update Order
Updates a work order.
- Update Project
Updates a project.
- Update Supplier
Updates a supplier.
- Update Task
Updates a task.
- Update User Competency
Updates a user's competency.
- Update User Induction
Updates a user's induction.
- 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.
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
Assignar and Lettr, answered
What can start an automation from Assignar?
Any of Assignar's 18 triggers in the catalog, including New Activity, New Asset, New Charge Code and New Client. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Lettr when something happens in Assignar?
Any of Lettr's 26 actions, including Create campaign, Create webhook, Send campaign and Send Email. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Lettr to Assignar?
Yes. When something happens in Lettr, your agent can act in Assignar too. This page covers both directions: Lettr's triggers and Assignar's actions are listed here as well.
Do I have to build a connector for Assignar or Lettr?
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 Assignar and Lettr 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.