PubNub (Real-time Messaging) MCP Server for LangChainGive LangChain instant access to 31 tools to Admin Create App, Admin Get Metrics, Admin List Apps, and more
GDPR Free for SubscribersLangChain is the leading Python framework for composable LLM applications. Connect PubNub (Real-time Messaging) through Vinkius and LangChain agents can call every tool natively. combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.
Ask AI about this MCP Server for LangChain
The PubNub (Real-time Messaging) MCP Server for LangChain is a standout in the Communication Messaging category — giving your AI agent 31 tools to work with, ready to go from day one.
Vinkius delivers Streamable HTTP and SSE to any MCP client
Geminiimport 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({
"pubnub-real-time-messaging": {
"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 PubNub (Real-time Messaging), show me what tools are available.",
}]
})
print(response["messages"][-1].content)
asyncio.run(main())
* 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 PubNub (Real-time Messaging) MCP Server
Connect your PubNub account to any AI agent to orchestrate real-time communication, monitor user presence, and manage data streams through natural language.
LangChain's ecosystem of 500+ components combines seamlessly with PubNub (Real-time Messaging) through native MCP adapters. Connect 31 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
- Real-time Messaging — Publish JSON payloads to any channel and retrieve historical message logs with precise timetokens.
- Presence Monitoring — Track who is online (
here_now), see which channels a user is in (where_now), and manage custom presence states. - User & Channel Metadata — Manage App Context by creating and retrieving user profiles, channel metadata, and memberships.
- Message Management — Count messages sent after specific timestamps or purge history for compliance and storage management.
- File Sharing — Generate upload URLs and manage files stored within the PubNub network.
- Admin & Push — Monitor keyset metrics, manage applications, and configure mobile push notifications (APNS/FCM).
The PubNub (Real-time Messaging) MCP Server exposes 31 tools through the Vinkius. Connect it to LangChain in under two minutes — credentials fully managed, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
All 31 PubNub (Real-time Messaging) tools available for LangChain
When LangChain connects to PubNub (Real-time Messaging) through Vinkius, your AI agent gets direct access to every tool listed below — spanning real-time-sync, pub-sub, data-streams, and more. Every call runs in a secure, isolated environment with full audit visibility. Beyond a simple connection, you get real-time monitoring of agent activity, enterprise governance, and optimized token usage.
Admin create app on PubNub (Real-time Messaging)
Create a new PubNub app (Admin API)
Admin get metrics on PubNub (Real-time Messaging)
Get usage metrics (Admin API)
Admin list apps on PubNub (Real-time Messaging)
List all PubNub apps (Admin API)
Admin list keysets on PubNub (Real-time Messaging)
List all keysets (Admin API)
Delete file on PubNub (Real-time Messaging)
Delete a file from a channel
Delete message history on PubNub (Real-time Messaging)
Delete message history for channels
Generate file upload url on PubNub (Real-time Messaging)
Generate a file upload URL
Get all channels on PubNub (Real-time Messaging)
Get all channels (App Context)
Get all users on PubNub (Real-time Messaging)
Get all users (App Context)
Get channel on PubNub (Real-time Messaging)
Get a specific channel (App Context)
Get file url on PubNub (Real-time Messaging)
Get a file URL
Get memberships on PubNub (Real-time Messaging)
Get memberships for a user (App Context)
Get message count on PubNub (Real-time Messaging)
Get message count for channels
Get message history on PubNub (Real-time Messaging)
Get message history for channels
Get user on PubNub (Real-time Messaging)
Get a specific user (App Context)
List files on PubNub (Real-time Messaging)
List files in a channel
Pam grant token on PubNub (Real-time Messaging)
Grant a PAM v3 token
Pam revoke token on PubNub (Real-time Messaging)
Revoke a PAM v3 token
Presence get state on PubNub (Real-time Messaging)
Get presence state for a user in a channel
Presence heartbeat on PubNub (Real-time Messaging)
Send presence heartbeat
Presence here now on PubNub (Real-time Messaging)
Get current channel occupancy (Here Now)
Presence leave on PubNub (Real-time Messaging)
Leave a channel (Presence)
Presence set state on PubNub (Real-time Messaging)
Set presence state for a user in a channel
Presence where now on PubNub (Real-time Messaging)
Get channels a user is in (Where Now)
Publish message on PubNub (Real-time Messaging)
Publish a message to a channel
Push manage on PubNub (Real-time Messaging)
Manage or list push notification channels for a device (APNS v2)
Push remove all on PubNub (Real-time Messaging)
Remove all push notification channels for a device (APNS v2)
Remove user on PubNub (Real-time Messaging)
Remove a user (App Context)
Set channel on PubNub (Real-time Messaging)
Set or update a channel (App Context)
Set memberships on PubNub (Real-time Messaging)
Set or update memberships for a user (App Context)
Set user on PubNub (Real-time Messaging)
Set or update a user (App Context)
Connect PubNub (Real-time Messaging) to LangChain via MCP
Follow these steps to wire PubNub (Real-time Messaging) into LangChain. The entire setup takes under two minutes — your credentials stay safe behind Vinkius.
Install dependencies
pip install langchain langchain-mcp-adapters langgraph langchain-openaiReplace the token
[YOUR_TOKEN_HERE] with your Vinkius tokenRun the agent
python agent.pyExplore tools
Why Use LangChain with the PubNub (Real-time Messaging) MCP Server
LangChain provides unique advantages when paired with PubNub (Real-time Messaging) through the Model Context Protocol.
The largest ecosystem of integrations, chains, and agents. combine PubNub (Real-time Messaging) 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 PubNub (Real-time Messaging) queries for multi-turn workflows
PubNub (Real-time Messaging) + LangChain Use Cases
Practical scenarios where LangChain combined with the PubNub (Real-time Messaging) MCP Server delivers measurable value.
RAG with live data: combine PubNub (Real-time Messaging) tool results with vector store retrievals for answers grounded in both real-time and historical data
Autonomous research agents: LangChain agents query PubNub (Real-time Messaging), synthesize findings, and generate comprehensive research reports
Multi-tool orchestration: chain PubNub (Real-time Messaging) tools with web scrapers, databases, and calculators in a single agent run
Production monitoring: use LangSmith to trace every PubNub (Real-time Messaging) tool call, measure latency, and optimize your agent's performance
Example Prompts for PubNub (Real-time Messaging) in LangChain
Ready-to-use prompts you can give your LangChain agent to start working with PubNub (Real-time Messaging) immediately.
"Publish a message to the 'alerts' channel saying 'System update scheduled for midnight'."
"Get the last 5 messages from the 'support-chat' channel."
"Who is currently active in the 'lobby' channel?"
Troubleshooting PubNub (Real-time Messaging) MCP Server with LangChain
Common issues when connecting PubNub (Real-time Messaging) to LangChain through Vinkius, and how to resolve them.
MultiServerMCPClient not found
pip install langchain-mcp-adaptersPubNub (Real-time Messaging) + LangChain FAQ
Common questions about integrating PubNub (Real-time Messaging) MCP Server with LangChain.
How does LangChain connect to MCP servers?
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?
Can I trace MCP tool calls in LangSmith?
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