Mailercloud MCP

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OAUTH 2.0

MARKETING

Marketing

Connect to Mailer Cloud MCP. Manage email campaigns, subscriber lists, and automation workflows for your email marketing operations.

  • Acts as the user: Every tool call runs as the authorizing user. Access and audit trail stay intact.
  • Credentials stay vaulted: AES-256 encrypted, resolved at request time, never stored in LLM context.
  • Scoped before every call: Per-user permissions enforced automatically. 90-day audit trail included.
Mailercloud MCP
agent · Acme Q3
Run
Analyze Campaign in Mailercloud MCP
S
mailercloudmcp_analyze_campaign
85ms
Mailercloud MCP agent
Deep-dive analysis of a single campaign's performance. returns a letter grade, weighted performance scores vs industry b.
Sources: Mailercloud MCP
mailercloudmcpmcp
1 tool call
18:29
Message Claude...

Tools your agent reaches for on Mailercloud, scoped per user.

CALL ANY TOOL
Campaign analysis, audience health, and contact management: email marketing ops scoped per user.
mailercloudmcp_analyze_campaign
Deep-dive analysis of a single campaign's performance. retur
Deep-dive analysis of a single campaign's performance. returns a letter grade, weighted performance scores vs industry benchmarks, deliverability health assessment, contextual insights, and prioritized actionable recommendations to improve future sends.
Parameters
Name
Type
Required
Description
campaign_id
string
Required
The unique ID of the campaign.
api_key
string
Optional
Your MailerCloud API key for authentication.
cost_per_email
number
Optional
Optional cost per email sent, used to calculate ROI in reports.
mailercloudmcp_analyze_latest_campaigns
Analyze recent completed campaigns as a batch (default 5, up
mailercloudmcp_audit_campaign_draft
Pre-send quality audit for a campaign draft. checks subject
mailercloudmcp_batch_create_contacts
Create multiple contacts at once in bulk.
mailercloudmcp_campaign_health_dashboard
Quick portfolio-level health check across recent campaigns.
mailercloudmcp_compare_campaigns
Side-by-side comparison of two or more campaigns. shows perf
mailercloudmcp_create_campaign
Create a new email campaign in mailercloud. requires name, s
mailercloudmcp_create_contact
Create a new contact in a mailercloud list. email and list_i
mailercloudmcp_create_list
Create a new contact list in mailercloud.
mailercloudmcp_create_tag
Create a new tag for organizing contacts.
mailercloudmcp_create_template
Create a new html email template.
mailercloudmcp_create_webhook
Create a new webhook to receive event notifications.
Build your Agent
Same auth pattern across LangChain, OpenAI, Anthropic, and Google ADK.
Python · LlamaIndex
from langchain_mcp_adapters.client import MultiServerMCPClient
from scalekit import ScalekitClient

client = ScalekitClient(env_url=ENV_URL, client_id=CLIENT_ID, client_secret=SECRET)
token = client.agent.get_token(user_id="user_id", connector="mailercloudmcp")

mcp = MultiServerMCPClient({
"mailercloudmcp": {
"url": "https://mcp.scalekit.com/mailercloudmcp",
"headers": {"Authorization": "Bearer " + token}
}
})
tools = await mcp.get_tools()
import OpenAI from "openai";
import { ScalekitClient } from "@scalekit-sdk/node";

const client = new ScalekitClient({ envUrl, clientId, clientSecret });
const token = await client.agent.getToken({ userId: "user_id", connector: "mailercloudmcp" });

const openai = new OpenAI();
// Connect to MCP at https://mcp.scalekit.com/mailercloudmcp
// Pass: Authorization: Bearer + token
import Anthropic from "@anthropic-ai/sdk";
import { ScalekitClient } from "@scalekit-sdk/node";

const client = new ScalekitClient({ envUrl, clientId, clientSecret });
const token = await client.agent.getToken({ userId: "user_id", connector: "mailercloudmcp" });

const anthropic = new Anthropic();
// Connect to MCP at https://mcp.scalekit.com/mailercloudmcp
// Pass: Authorization: Bearer + token
from google.adk.agents import LlmAgent
from scalekit import ScalekitClient

client = ScalekitClient(env_url=ENV_URL, client_id=CLIENT_ID, client_secret=SECRET)
token = client.agent.get_token(user_id="user_id", connector="mailercloudmcp")
# Connect to MCP at https://mcp.scalekit.com/mailercloudmcp
# Pass: Authorization: Bearer + token
Try these prompts
Copy any prompt into your agent. Each maps directly to a Mailercloud tool. Click to copy, paste into your agent, done.
Get started
Copy the prompt
Copied
Create a contact if it doesn’t exist, or update it if it does?
Copy the prompt
Copied
Update an existing webhook’s configuration?
Advanced
Copy the prompt
Copied
Enable or disable a webhook?
Copy the prompt
Copied
Send a transactional email via MailerCloud Email API?
SEE HOW AUTH WORKS
Your users connect once. Their Mailercloud credentials stay vaulted, every call is scope-checked, and every action is logged.
1
Authorize
Your user connects
Mailercloud MCP
once. We tie it to their identity and the meetings they approved — no shared bot account, no org-wide access
Who:
user ‘A’
when:
Once per user
access:
Limited to user
2
Store
Their
Mailercloud MCP
token lives in a vault scoped to them. User A's meetings are never reachable by an agent acting for user B, even on the same connection
vault:
encrypted
scope:
per-user
tokens:
auto-refreshed
3
Resolve
When your agent calls a
Mailercloud MCP
tool, we fetch the right token server-side. It never touches your agent, never appears in the LLM context, never shows up in your logs
speed:
~40ms
check:
before every call
seen by:
nobody
4
Audit
Every
Mailercloud MCP
tool call is logged — who triggered it, which meeting was fetched, what came back. 90 days of history, tied to the user who authorized it
history:
90 days
export:
SIEM-ready
logged:
every call
Test other agents
See the same per-user auth pattern across other connectors.
SALES
Outbound prospecting agent
Build targeted prospect lists with Apollo, enrich with firmographic data, and draft personalised outreach. Runs on a schedule.
GTM
HubSpot to Slack updates agent
Watch HubSpot deal stage changes and post structured updates to the right Slack channel. Reps stop checking the CRM all day.
Why Scalekit
Secure your agent's access. Connectors ship in minutes
Other connector libraries treat auth as a demo afterthought. Scalekit starts with identity, scope enforcement, and audit. Connectors follow.
01.
Shared tokens break per-user analytics
A shared token looks fine in a demo. In production every call looks like a service account. Scalekit resolves the real user credential.
// shared token
audit → bot_service_account

// scalekit
audit → user_abc ✓
02.
Authentication is not authorization
03.
Multi-tenancy is architectural
04.
One connector today. Ten tomorrow.
“Our agents act across Salesforce, Gong, Google Drive, and more, on behalf of every customer. Scalekit behind the scenes meant we can keep adding tools without ever rebuilding how credentials or tool calling work.”
Venu Madhav Kattagoni
Head of Engineering / Von
FAQs
Frequently Asked Questions

Does the agent access Mailercloud as the user or as a shared key?
As the user. Each workspace member authorizes once and Scalekit resolves their credential at request time. Audit logs attribute every action to that user, not a shared service account.

Where is the Mailercloud OAuth token stored?
In Scalekit's managed AES-256 token vault, namespaced per tenant. Refresh is automatic. Revocation is a single dashboard action. Tokens never appear in prompts, logs, or LLM context.

Can I limit what the agent is allowed to do in Mailercloud?
Yes. Pass a tool name filter to listScopedTools so the marketing agent only sees the subset you authorize. Pre-API-call scope checks block out-of-policy actions before the request reaches Mailercloud.

What happens when a user revokes Mailercloud access?
The connection is invalidated on the next tool call. Subsequent requests for that user fail closed with a clear error. Other users in the tenant remain unaffected. The event is logged for audit.

Can the agent send email campaigns without review?
Only if you expose send tools. Campaign audit, analysis, and contact tools are separate from sends, so you can run a reporting agent that cannot touch a live audience.

Start in your coding agent
Up and running in one command
Install the Scalekit skill in your editor of choice. Connector, auth, tools, prompt, all wired up
Claude Code REPL
/plugin marketplace add scalekit-inc/claude-code-authstack
/plugin install agentkit@scalekit-auth-stack
Cursor Code REPL
# ~/.cursor/mcp.json
{
""mcpServers"": {
""mailercloudmcp"": {
""url"": ""https://mcp.scalekit.com/mailercloudmcp"",
""headers"": { ""Authorization"": ""Bearer $SCALEKIT_TOKEN"" }
}
}
}
Codex Code REPL
# ~/.codex/config.toml
[mcp_servers.mailercloudmcp]
url = ""https://mcp.scalekit.com/mailercloudmcp""
auth_env = ""SCALEKIT_TOKEN""
Copilot Code REPL
# .vscode/mcp.json
{
""servers"": {
""mailercloudmcp"": {
""url"": ""https://mcp.scalekit.com/mailercloudmcp"",
""type"": ""http""
}
}
}