3,400+ MCP servers ready to use
Vinkius

Bring Sms Marketing
to LangChain

Learn how to connect Postscript to LangChain and start using 12 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.

Create SubscriberCreate WebhookDelete WebhookGet Account InfoGet CampaignGet SubscriberList AutomationsList CampaignsList KeywordsList SubscribersList WebhooksUpdate Subscriber
Use with Your AI Agent
Ask AI about this MCP Server
ChatGPT Claude Perplexity

What is the Postscript MCP Server?

Connect your Postscript account to any AI agent and take full control of your SMS marketing orchestration through natural conversation. Postscript is the leading SMS platform for Shopify stores, and this integration allows you to retrieve subscriber metadata, monitor campaign performance, and manage automated keywords directly from your chat interface.

What you can do

  • Subscriber & Audience Orchestration — List all managed SMS subscribers and retrieve detailed profile metadata programmatically to ensure your outreach is always synchronized.
  • Campaign & Flow Intelligence — Access and monitor your SMS campaigns and automated flows (like abandoned cart recovery) directly from the AI interface to track engagement metrics.
  • Keyword & Opt-in Control — List and search through your mobile keywords to maintain a clear overview of your subscription sources via natural language.
  • Operational Monitoring — Track system responses and manage webhook metadata using simple AI commands.
  • Account Visibility — Access high-level account and plan metadata to ensure your SMS operations are always optimized.

How it works

1. Subscribe to this server
2. Enter your Postscript Private API Key from your account settings
3. Start managing your SMS automation from Claude, Cursor, or any MCP-compatible client

No more manual dashboard checking for subscriber status. Your AI acts as a dedicated SMS marketing coordinator or growth manager.

Who is this for?

  • Shopify Store Owners — quickly retrieve subscriber summaries and monitor campaign reach without switching apps.
  • E-commerce Marketers — automate the discovery of top-performing keywords and track automated flows via natural conversation.
  • Operations Teams — streamline the retrieval of SMS metadata and monitor organizational growth health directly within the chat.

Built-in capabilities (12)

create_subscriber

Note: Compliance rules apply. Subscribe a new user

create_webhook

Create a new webhook

delete_webhook

Delete a webhook

get_account_info

Get account details

get_campaign

Get campaign details

get_subscriber

Get subscriber details

list_automations

g., Abandoned Cart). List SMS automations

list_campaigns

List SMS campaigns

list_keywords

List SMS keywords

list_subscribers

List all SMS subscribers

list_webhooks

List active webhooks

update_subscriber

Update subscriber info

Why LangChain?

LangChain's ecosystem of 500+ components combines seamlessly with Postscript through native MCP adapters. Connect 12 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.

  • —

    The largest ecosystem of integrations, chains, and agents. combine Postscript MCP tools with 500+ LangChain components

  • —

    Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step

  • —

    LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging

  • —

    Memory and conversation persistence let agents maintain context across Postscript queries for multi-turn workflows

See it in action

Postscript in LangChain

AI Agent→Vinkius
High Security·Kill Switch·Plug and Play
Why Vinkius

Postscript and 3,400+ other MCP servers. One platform. One governance layer.

Teams that connect Postscript to LangChain through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.

3,400+MCP Servers ready
<40msCold start
60%Token savings
Raw MCP
Vinkius
Server catalogFind and host yourself3,400+ managed
InfrastructureSelf-hostedSandboxed V8 isolates
Credential handlingPlaintext in configVault + runtime injection
Data loss preventionNoneConfigurable DLP policies
Kill switchNoneGlobal instant shutdown
Financial circuit breakersNonePer-server limits + alerts
Audit trailNoneEd25519 signed logs
SIEM log streamingNoneSplunk, Datadog, Webhook
HoneytokensNoneCanary alerts on leak
Custom domainsNot applicableDNS challenge verified
GDPR complianceManual effortAutomated purge + export
Use with Your AI Agent View step-by-step setup guide for LangChain →
Enterprise Security

Why teams choose Vinkius for Postscript in LangChain

The Postscript MCP Server runs on Vinkius-managed infrastructure inside AWS — a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts. All 12 tools execute in hardened sandboxes optimized for native MCP execution.

Your AI agents in LangChain only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.

Use with Your AI Agent View full Postscript details →
Postscript
Fully ManagedVinkius Servers
60%Token savings
High SecurityEnterprise-grade
IAMAccess control
EU AI ActCompliant
DLPData protection
V8 IsolateSandboxed
Ed25519Audit chain
<40msKill switch
Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

The Vinkius Advantage

How Vinkius secures Postscript for LangChain

Every tool call from LangChain to the Postscript MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.

< 40msCold start
Ed25519Signed audit chain
60%Token savings
FAQ

Frequently asked questions

01

Can my AI automatically find the details for a specific SMS subscriber by providing their ID?

Yes! Use the get_subscriber tool with the Subscriber ID. Your agent will respond with the complete metadata for the profile, including opt-in status and association keywords in seconds.

02

How do I find my Postscript Private API Key?

Log in to your Postscript account, navigate to Settings > API, and you will find your unique secret Private Key (starting with sk-) there.

03

Can I use the AI to see my SMS campaigns?

Absolutely. Use the list_campaigns tool to retrieve all your sent and scheduled SMS campaigns, along with their metadata and performance metrics.

04

How does LangChain connect to MCP servers?

Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.

05

Which LangChain agent types work with MCP?

All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.

06

Can I trace MCP tool calls in LangSmith?

Yes. All MCP tool invocations appear as traced steps in LangSmith, showing input parameters, response payloads, latency, and token usage.

07

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters