How do I get my Instantly API key?

Log in to your Instantly account at **app.instantly.ai**. Navigate to **Settings** (gear icon in the left sidebar). Click on the **API** section. Click **Create API Key**, give it a name, and copy the generated key. Paste it into the configuration field below. API access is available on all paid plans.

Can I monitor email warm-up health through my agent?

Yes. Your agent can check warm-up scores, daily sending volumes, and inbox placement rates for each sending account — helping you know when new accounts are ready for full-volume campaigns.

Can I manage multiple sending accounts?

Yes. Instantly supports unlimited sending accounts. Your AI agent can list all accounts, check their warm-up status, and manage which accounts are assigned to which campaigns.

How is Instantly different from other cold email tools?

Instantly differentiates with unlimited sending accounts, built-in email warm-up, and high-volume campaign infrastructure. It's designed for agencies and teams running 10K+ emails/month across dozens of sending domains.

Instantly MCP Server for LangChain 10 tools — connect in under 2 minutes

Name: Instantly
Availability: InStock
Author: Vinkius

python.langchain.com/docs/integrations/tools/mcp

Built by Vinkius GDPR 10 Tools Framework

LangChain is the leading Python framework for composable LLM applications. Connect Instantly through Vinkius and LangChain agents can call every tool natively. combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

Open in ChatGPT Open in Claude Open in Perplexity

Vinkius supports streamable HTTP and SSE.

python

import asyncio
from langchain_mcp_adapters.client import MultiServerMCPClient
from langchain_openai import ChatOpenAI
from langgraph.prebuilt import create_react_agent

async def main():
    # Your Vinkius token. get it at cloud.vinkius.com
    async with MultiServerMCPClient({
        "instantly": {
            "transport": "streamable_http",
            "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
        }
    }) as client:
        tools = client.get_tools()
        agent = create_react_agent(
            ChatOpenAI(model="gpt-4o"),
            tools,
        )
        response = await agent.ainvoke({
            "messages": [{
                "role": "user",
                "content": "Using Instantly, show me what tools are available.",
            }]
        })
        print(response["messages"][-1].content)

asyncio.run(main())

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

About Instantly MCP Server

Connect Instantly to your AI agent and manage your high-volume cold email platform conversationally.

LangChain's ecosystem of 500+ components combines seamlessly with Instantly through native MCP adapters. Connect 10 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.

What you can do

Campaign Management — Create, pause, resume, and monitor email campaigns with engagement metrics.
Lead Management — Add, update, and search leads across campaigns with custom variables.
Account Warm-up — Monitor email warm-up progress and deliverability scores across sending accounts.
Analytics — Track opens, replies, bounces, and campaign-level performance in real time.

The Instantly MCP Server exposes 10 tools through the Vinkius. Connect it to LangChain in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect Instantly to LangChain via MCP

Follow these steps to integrate the Instantly MCP Server with LangChain.

Install dependencies

Run pip install langchain langchain-mcp-adapters langgraph langchain-openai

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Run the agent

Save the code and run python agent.py

Explore tools

The agent discovers 10 tools from Instantly via MCP

Why Use LangChain with the Instantly MCP Server

LangChain provides unique advantages when paired with Instantly through the Model Context Protocol.

The largest ecosystem of integrations, chains, and agents. combine Instantly 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 Instantly queries for multi-turn workflows

Instantly + LangChain Use Cases

Practical scenarios where LangChain combined with the Instantly MCP Server delivers measurable value.

RAG with live data: combine Instantly tool results with vector store retrievals for answers grounded in both real-time and historical data

Autonomous research agents: LangChain agents query Instantly, synthesize findings, and generate comprehensive research reports

Multi-tool orchestration: chain Instantly tools with web scrapers, databases, and calculators in a single agent run

Production monitoring: use LangSmith to trace every Instantly tool call, measure latency, and optimize your agent's performance

Instantly MCP Tools for LangChain (10)

These 10 tools become available when you connect Instantly to LangChain via MCP:

add_leads

Add leads to a campaign

get_account_stats

Get account summary stats

get_campaign

Get campaign details

get_campaign_analytics

Get campaign analytics

list_accounts

List sending accounts

list_campaigns

List all campaigns

list_leads

List leads in a campaign

list_subsequences

List campaign subsequences

pause_campaign

Pause a campaign

resume_campaign

Resume a campaign

Example Prompts for Instantly in LangChain

Ready-to-use prompts you can give your LangChain agent to start working with Instantly immediately.

"What's the open rate on my 'SaaS Founders Q2' campaign?"

"Check warm-up status on all my sending accounts."

"Add 50 leads to the 'Enterprise Outreach' campaign."

Troubleshooting Instantly MCP Server with LangChain

Common issues when connecting Instantly to LangChain through the Vinkius, and how to resolve them.

MultiServerMCPClient not found

Install: pip install langchain-mcp-adapters

Instantly + LangChain FAQ

Common questions about integrating Instantly MCP Server with LangChain.

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.

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.