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Cardly for AI agents

Cardly helps businesses send real, physical greeting cards to customers, aiming to stand out from crowded inboxes with something that lands in a mailbox. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.

Connect CardlySee the 29 actions ↓
MarketingAPI keyMCP + RESTcardly.com
AUDIT LOG · CARDLYPOLICY: acme-support
09:41:07 · claude · u_8f2read
cardly.list_fonts
List Fonts✓ allowed · 212ms
09:41:08 · claude · u_8f2read
cardly.list_media
List Media✓ allowed · 164ms
09:41:09 · claude · u_8f2write
cardly.create_webhook
Create Webhook✓ approved · approved by user
09:41:12 · claude · u_8f2destructive
cardly.delete_user
Delete User✕ blocked · policy: deny
EVERY CARDLY CALL, ON THE RECORD
01 · USE CASES

What agents do in Cardly.

01

Check account credit balance

Check the remaining account balance before sending a batch of physical cards.

02

Generate a card preview

Generate a preview of a card's design and message before it gets sent to print.

03

Confirm before deleting an invitation

Confirm before deleting a pending invitation, since it can't be recovered once removed.

02 · ACTIONS

29 Cardly actions, graded by risk.

Every Cardly action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.

read

18

Look things up. Allowed by default.

  • cardly.list_fonts
    List Fonts
  • cardly.list_media
    List Media
  • cardly.list_users
    List Users
  • cardly.get_artwork
    Get Artwork
  • cardly.get_webhook
    Get Webhook
  • cardly.list_orders
    List Orders
  • cardly.list_artwork
    List Artwork
  • cardly.list_doodles
    List Doodles
  • cardly.list_webhooks
    List Webhooks
  • cardly.list_templates
    List Templates
  • cardly.list_invitations
    List Invitations
  • cardly.list_contact_lists
    List Contact Lists
  • cardly.list_credit_history
    List Credit History
  • cardly.list_writing_styles
    List Writing Styles
  • cardly.list_gift_credit_history
    List Gift Credit History
  • cardly.retrieve_user
    Retrieve User
+ 2 MORE

write

6

Create and change things. Allow, or ask the user first.

  • cardly.create_webhook
    Create Webhook
  • cardly.update_webhook
    Update Webhook
  • cardly.create_invitation
    Create Invitation
  • cardly.create_contact_list
    Create Contact List
  • cardly.echo_request
    Echo Request
  • cardly.generate_preview
    Generate Preview

destructive

5

Delete, cancel or archive. Ask first, or deny outright.

  • cardly.delete_user
    Delete User
  • cardly.delete_webhook
    Delete Webhook
  • cardly.delete_invitation
    Delete Invitation
  • cardly.delete_user_by_email
    Delete User by Email
  • cardly.delete_invitation_by_email
    Delete Invitation by Email
03 · HOW IT WORKS

Cardly in three steps.

  1. 01Your users connect CardlyThey add their Cardly api key on Arc0 Connect, under your brand. It goes straight into the vault.
  2. 02You set the rulesReads run, writes like “create Webhook” can wait for the user, and “delete User” can be denied outright.
  3. 03Any agent can actYour agent calls Cardly through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.
POLICY.TS
await arc0.policies.set('cardly', {
  read: 'allow',
  write: 'ask',        // create_webhook
  destructive: 'deny',  // delete_user
})

# Claude Code: the same connection, one URL
$ claude mcp add --transport http arc0 \
    https://mcp.arc0.ai/u/u_8f2
04 · AUTH AND DATA

How Cardly connects.

Users add their Cardly api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

The same Cardly connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →

AUTH
API key
CREDENTIALS
Per-tenant encrypted vault
MODEL SEES
Results only, never credentials
AUDIT LOG
Every call, on every plan
05 · WORKS WITH

Use Cardly from any agent.

Claude
ChatGPT
Cursor
Codex
VS Code
OpenAI Agents SDK
Claude Agent SDK
Vercel AI SDK
Mastra
LangGraph
06 · RELATED

More marketing apps.

Meta Ads67 actionsActiveCampaign298 actionsActiveTrail159 actionsAdobe Marketing Agent12 actionsAdtraction22 actionsAdyntel8 actionsAhrefs40 actionsAirOps96 actions
ALL MARKETING APPS →
07 · FAQ

Cardly and Arc0, answered.

Q01

Can I use Cardly with Claude, ChatGPT or Cursor?

Yes. Connect Cardly to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the Cardly actions you allow.

Q02

How do users connect Cardly?

Users add their Cardly api key on Arc0 Connect. It is encrypted in the vault, never shown to the model, and each user can rotate or revoke it at any time.

Q03

Which Cardly actions can my agent take?

29 in total: 18 read, 6 write and 5 destructive, such as “create Webhook”. Your policies decide which of them each agent may call.

Q04

Can I stop my agent from deleting things in Cardly?

Yes. Actions like “delete User” are graded destructive. Set destructive actions to deny, or to ask so the user approves each one, and blocked calls still show up on the audit log.

Q05

Can my own backend call Cardly too?

Yes. The same Cardly connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.

Get started

Plug Cardly into your agent.

Your users connect Cardly once, under your brand. Your agent gets 29 actions behind your policies, with every call on the record.

Connect CardlyBrowse all apps →

Free to build · MCP + REST · Audit log on every plan