App

Open Letter Connect integrations

Connect Open Letter Connect to any other app, or use it from your AI client over MCP. Open Letter Connect allows you to seamlessly print and mail personalized postcards, letters, flyers, and real penned letters on demand.

Connects with an API keyopenletterconnect.com

2 triggers 12 actions

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 to automate with Open Letter Connect?

Ask the assistant

Connect your AI client

Give your AI client this address.

https://mcp.apiant.ai

One 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.ai

Start Claude Code there, approve the server, and sign in in the browser page it opens.

Claude Code guide

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

Cursor

Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser.

Setup guide

Zed

Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.

Setup guide

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

Grok

Open grok.com/connectors, choose New Connector, then Custom, and paste the address. Grok signs you in in your browser.

Setup guide

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

Popular

Open Letter Connect with the apps people pair it with most

Pair it

Connect Open Letter Connect with another app

What your agent can do with Open Letter Connect

Triggers and actions 2 triggers · 12 actions

Trigger
New Contact
Triggers when a new contact is added in Open Letter Connect.
Trigger
New Order
Triggers when a new mail order is placed in Open Letter Connect.
Action
Add contact labels
Adds one or more labels (tags) to the given contacts. The update runs in the background.
Action
Cancel Order
Cancels an Open Letter Connect order that has not been mailed yet.
Action
Create Contact
Creates a contact in Open Letter Connect with a US mailing address. Either First Name or Company Name is required.
Action
Delete Contact
Deletes an Open Letter Connect contact.
Action
Find Contacts
Searches Open Letter Connect contacts by name, company, address, email or phone and returns the matches.
Action
Find Orders
Searches Open Letter Connect orders by order name or exact order ID.
Action
Get Contact
Returns one Open Letter Connect contact, including its labels.
Action
Get Order
Returns one Open Letter Connect order with its status, payment status and template.
Action
List contact labels
Returns all contact labels (tags) in your Open Letter Connect organization, with how many contacts carry each.
Action
List Templates
Lists your Open Letter Connect mail templates, optionally including the shared templates OLC provides.
Action
List tracking phone numbers
Returns the tracking phone numbers in your Open Letter Connect organization, optionally filtered by a search term.
Action
Update Contact
Updates an existing Open Letter Connect contact. Only the fields you fill in are changed.

Reviews

What our customers say

Questions

Open Letter Connect, answered

Is there a Open Letter Connect MCP server?

APIANT's MCP server at https://mcp.apiant.ai works with Open Letter Connect. Add that address to any AI client that takes a remote MCP server and sign in once in your browser. Your client can then run Open Letter Connect actions on demand, or have APIANT build, test and run automations that use Open Letter Connect. Nothing to install.

What can start an automation from Open Letter Connect?

Any of Open Letter Connect's 2 triggers in the catalog, including New Contact and New Order. Describe the moment in plain language and your agent picks the right one.

What can your agent do in Open Letter Connect?

Any of Open Letter Connect's 12 actions, including Create Contact, Update Contact, Add contact labels and Find Contacts. Your agent maps the data both ways and tests every scenario before it ships.

Can I use Open Letter Connect directly from Claude, ChatGPT or Cursor?

Yes. Connect your AI client to APIANT once and it works with Open Letter Connect two ways. Ask it to do something in Open Letter Connect 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 on its own. A one-off action uses your plan's tasks the same way an automation step does.

Do I need to write code against the Open Letter Connect API?

No. APIANT connects to the Open Letter Connect API for you, with your Open Letter Connect API key. Describe what you want in plain language and your agent builds it on the Open Letter Connect triggers and actions in the catalog. If you need an endpoint that is not there yet, your agent reads the Open Letter Connect API documentation and adds it.

Which apps can Open Letter Connect connect to?

Any app in the catalog; the list on this page pairs Open Letter Connect with each of them. If the other app is missing, point your agent at its API documentation and it builds the connector.

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.