Echtpost MCP connector for AI agents

Tools your communication agent reaches for on Echtpost MCP, scoped per user.

CALL ANY TOOL

Echtpost MCP exposes tools for the full postcard lifecycle — from browsing motives and validating message fit, to creating cards, managing contacts and groups, and checking account credits.

echtpostmcp_cancel_card

Cancel Card

Cancel a scheduled postcard. Only cards where "cancelable" is true can be cancelled. Cancellation is asynchronous and may take a few minutes.

Parameters

Name

Type

Required

Description

string

Required

UUID of the card to cancel.

echtpostmcp_create_card

Create Card

echtpostmcp_create_card_from_template

Create Card From Template

echtpostmcp_create_contact

Create Contact

echtpostmcp_create_group

Create Group

echtpostmcp_delete_contact

Delete Contact

echtpostmcp_delete_group

Delete Group

echtpostmcp_get_card

Get Card

echtpostmcp_get_contact

Get Contact

echtpostmcp_get_group

Get Group

echtpostmcp_get_me

Get Me

echtpostmcp_get_motive

Get Motive

echtpostmcp_get_template

Get Template

echtpostmcp_list_cards

List Cards

echtpostmcp_list_contacts

List Contacts

echtpostmcp_list_credits

List Credits

echtpostmcp_list_groups

List Groups

echtpostmcp_list_motives

List Motives

echtpostmcp_list_templates

List Templates

echtpostmcp_preview_fit

Preview Fit

echtpostmcp_update_contact

Update Contact

echtpostmcp_update_group

Update Group

Build your Agent

Same auth pattern across every framework.

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="echtpostmcp")

mcp = MultiServerMCPClient({
    "echtpostmcp": {
        "url": "https://mcp.scalekit.com/echtpostmcp",
        "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: "echtpostmcp" });

const openai = new OpenAI();
// Connect to MCP at https://mcp.scalekit.com/echtpostmcp
// 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: "echtpostmcp" });

const anthropic = new Anthropic();
// Connect to MCP at https://mcp.scalekit.com/echtpostmcp
// 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="echtpostmcp")
# Connect to MCP at https://mcp.scalekit.com/echtpostmcp
# Pass: Authorization: Bearer + token

Try these prompts

Paste any prompt into your agent to get started.

Send & schedule

Copy the prompt

Copied

Send a thank-you postcard to everyone in my 'Customers 2024' group using the spring motive. Schedule it to arrive next Monday.

Copy the prompt

Copied

Create a birthday postcard for Maria Müller using template ID 42 and deliver it on her birthday, June 20th.

Contacts & groups

Copy the prompt

Copied

Add John Smith at 123 Main St, Berlin, Germany to my address book and assign him to the 'Newsletter' group.

Copy the prompt

Copied

List all contacts in my 'VIP' group and show me how many cards I have enough credits to send them.

SEE HOW AUTH WORKS

User authorises once. Every agent call after uses their token with scope enforcement.

Authorize

Your user connects

Echtpost 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

Store

Their

Echtpost 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

Resolve

When your agent calls a

Echtpost 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

Audit

Every

Echtpost 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.

ENGINEERING

Slack workflow agent (LangGraph)

LangGraph agent that drives multi-step Slack workflows: triggers, approvals, and follow-up actions per user identity.

Slack

View agent

OPS

Email-to-calendar scheduling agent

Parse scheduling intent from Gmail threads and create Google Calendar events with the right attendees and timezone.

Gmail

Google Calendar

View agent

Why Scalekit

Secure your agent's access. Connectors ship in minutes

Other connector libraries treat auth as a demo afterthought.

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

“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 Echtpost MCP as the user or as a shared key?

Scalekit resolves a per-user credential for each call. The Echtpost MCP audit log shows the real user identity, not a shared service account.

Where is the Echtpost MCP token stored?

In Scalekit's AES-256 encrypted vault, isolated per tenant. Tokens are auto-refreshed before expiry and revocable from a single dashboard without code changes.

Can I limit what the agent is allowed to do in Echtpost MCP?

Pass a toolNames filter to listScopedTools. Scalekit enforces the allowed set before every API call — the agent cannot invoke tools outside the approved list.

What happens when a user revokes Echtpost MCP access?

The token is invalidated at the next tool call. The agent fails closed rather than falling back to a shared key. Other users are unaffected and the revocation event is logged with a timestamp.

Postcards cost credits — can the agent accidentally send cards that deplete a user's balance?

You can restrict the agent to read-only tools (list_motives, preview_fit, list_credits) by passing a toolNames allowlist to listScopedTools. Write tools like create_card and create_card_from_template are excluded until you explicitly grant them, so accidental sends are blocked at the Scalekit layer before the Echtpost API is reached.

On this page

Tool and actions Framework Compatibility Starter Prompt Auth Lifecycle Try Other Agents Why Scalekit