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CardClan for AI agents

CardClan helps teams personalize and send digital cards, generating shareable card links for things like customer thank-yous or event invitations. 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 CardClanSee the 9 actions ↓
MarketingAPI keyMCP + REST
AUDIT LOG · CARDCLANPOLICY: acme-support
09:41:07 · claude · u_8f2read
cardclan.list_cards
List Cards✓ allowed · 212ms
09:41:08 · claude · u_8f2read
cardclan.list_workspaces
List Workspaces✓ allowed · 164ms
09:41:09 · claude · u_8f2write
cardclan.create_integration_config
Create Integration Configuration✓ approved · approved by user
EVERY CARDCLAN CALL, ON THE RECORD
01 · USE CASES

What agents do in CardClan.

01

Generate a personalized card link

Generate a personalized card URL for a specific recipient, ready to share or embed.

02

Check a card's details

Look up a card's details before deciding whether to send it or edit it further.

03

Send a card to a recipient

Send a chosen card to a recipient once its personalization has been confirmed.

02 · ACTIONS

9 CardClan actions, graded by risk.

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

read

6

Look things up. Allowed by default.

  • cardclan.list_cards
    List Cards
  • cardclan.list_workspaces
    List Workspaces
  • cardclan.get_card_details
    Get Card Details
  • cardclan.list_email_accounts
    List Email Accounts
  • cardclan.list_workflow_cards
    List Workflow Cards
  • cardclan.get_integration_config
    Get Integration Configuration

write

3

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

  • cardclan.send_card
    Send Card
  • cardclan.create_integration_config
    Create Integration Configuration
  • cardclan.generate_card_url
    Generate Personalized Card URL

destructive

0

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

  • No destructive actions.
03 · HOW IT WORKS

CardClan in three steps.

  1. 01Your users connect CardClanThey add their CardClan api key on Arc0 Connect, under your brand. It goes straight into the vault.
  2. 02You set the rulesReads run, and writes like “create Integration Configuration” can wait for the user to approve.
  3. 03Any agent can actYour agent calls CardClan 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('cardclan', {
  read: 'allow',
  write: 'ask',        // create_integration_config
  destructive: 'deny',  
})

# 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 CardClan connects.

Users add their CardClan 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 CardClan 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 CardClan 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

CardClan and Arc0, answered.

Q01

Can I use CardClan with Claude, ChatGPT or Cursor?

Yes. Connect CardClan 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 CardClan actions you allow.

Q02

How do users connect CardClan?

Users add their CardClan 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 CardClan actions can my agent take?

9 in total: 6 read, 3 write and 0 destructive, such as “create Integration Configuration”. Your policies decide which of them each agent may call.

Q04

Can I make my agent read-only in CardClan?

Yes. Allow read actions and deny writes in the CardClan policy. Your agent can still look things up, and any write it attempts is blocked and logged.

Q05

Can my own backend call CardClan too?

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

Get started

Plug CardClan into your agent.

Your users connect CardClan once, under your brand. Your agent gets 9 actions behind your policies, with every call on the record.

Connect CardClanBrowse all apps →

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