Sendlane for AI agents

Sendlane is a marketing automation platform built for ecommerce brands, combining email and SMS campaigns with subscriber lists and tagging. Ecommerce marketers use it to run lifecycle messaging. 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.

MarketingAPI keyMCP + RESTsendlane.com
AUDIT LOG · SENDLANEPOLICY: acme-support
09:41:07 · claude · u_8f2read
sendlane.get_lists
Get Lists✓ allowed · 212ms
09:41:08 · claude · u_8f2read
sendlane.get_campaigns
Get Campaigns✓ allowed · 164ms
09:41:09 · claude · u_8f2write
sendlane.post_list
Create List✓ approved · approved by user
09:41:12 · claude · u_8f2destructive
sendlane.list_delete
Delete List✕ blocked · policy: deny
EVERY SENDLANE CALL, ON THE RECORD
01 · USE CASES

What agents do in Sendlane.

01

Review campaign performance

Pull the current campaigns and their custom fields to see what is live before launching something new.

02

Tag a subscriber segment

Create a tag to mark a group of subscribers for a targeted email or SMS sequence.

03

Confirm before removing a list

Check a list's details and get sign-off before deleting it, since removing a list can't be undone.

02 · ACTIONS

6 Sendlane actions, graded by risk.

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

read

3

Look things up. Allowed by default.

  • sendlane.get_lists
    Get Lists
  • sendlane.get_campaigns
    Get Campaigns
  • sendlane.get_custom_fields
    Get Custom Fields

write

2

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

  • sendlane.post_list
    Create List
  • sendlane.tag_create
    Create Tag

destructive

1

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

  • sendlane.list_delete
    Delete List
03 · HOW IT WORKS

Sendlane in three steps.

  1. 01Your users connect SendlaneThey add their Sendlane api key on Arc0 Connect, under your brand. It goes straight into the vault.
  2. 02You set the rulesReads run, writes like “create List” can wait for the user, and “delete List” can be denied outright.
  3. 03Any agent can actYour agent calls Sendlane 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('sendlane', {
  read: 'allow',
  write: 'ask',        // post_list
  destructive: 'deny',  // list_delete
})

# 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 Sendlane connects.

Users add their Sendlane 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 Sendlane 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 Sendlane from any agent.

Claude
ChatGPT
Cursor
Codex
VS Code
OpenAI Agents SDK
Claude Agent SDK
Vercel AI SDK
Mastra
LangGraph
07 · FAQ

Sendlane and Arc0, answered.

Q01

Can I use Sendlane with Claude, ChatGPT or Cursor?

Yes. Connect Sendlane 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 Sendlane actions you allow.

Q02

How do users connect Sendlane?

Users add their Sendlane 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 Sendlane actions can my agent take?

6 in total: 3 read, 2 write and 1 destructive, such as “create List”. Your policies decide which of them each agent may call.

Q04

Can I stop my agent from deleting things in Sendlane?

Yes. Actions like “delete List” 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 Sendlane too?

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

Get started

Plug Sendlane into your agent.

Your users connect Sendlane once, under your brand. Your agent gets 6 actions behind your policies, with every call on the record.

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