How to Use the Cloud DNS (Anycast DNS Provider API) MCP in LangChain

Q: Does the Cloud DNS (Anycast DNS Provider API) LangChain integration support LangSmith tracing?

Yes, every call to updaterecord or listrecords flows through your standard LangChain callbacks. You see the exact payload, execution time, and any API errors inside your LangSmith dashboard.

Q: Can my LangChain chain manage multiple domains using Cloud DNS (Anycast DNS Provider API)?

Your agent runs listzones to find the correct target domain, then dynamically passes that zone ID to createrecord. This allows a single LangChain run to configure multiple isolated domains in sequence.

Build LangChain pipelines that configure DNS zones and update Anycast records dynamically based on live application health checks.

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Setup Cloud DNS (Anycast DNS Provider API) with LangChain

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Automate DNS Zone Setup in LangChain

The `create_zone` tool lets your LangChain agent set up fresh Anycast DNS configurations the second a new tenant registers. This tool handles the initial domain registration step without human intervention, feeding the resulting zone details straight into your pipeline. Subsequent steps in your chain use `list_zones` to verify the setup succeeded before moving on to server deployment. You get complete execution tracing in LangSmith, showing you the exact latency of each DNS zone creation.

Update Records with LangChain Agents

The `update_record` tool modifies existing IP mappings inside your zone configuration when your backend triggers a failover event. LangChain chains pass the output of your health checks directly into this tool to route traffic away from dead servers. By inspecting current states via `list_records`, your agent prevents duplicate entries. This MCP Server integration ensures every tool call gets logged in LangSmith so you can audit DNS propagation delays and token usage.

Teardown Environments with an MCP Server

The `delete_zone` tool clears out entire DNS zones when your LangChain testing workflows finish running. This tool prevents orphaned domains from cluttering your Anycast network and costing you money. Before deleting the zone, your agent runs `delete_record` on individual subdomains. You build these teardown steps directly into your LangGraph state machines for reliable execution.

Setup guide

Set up Cloud DNS (Anycast DNS Provider API) MCP in LangChain

Prerequisites

Python 3.10+ installed
langchain-mcp-adapters + langgraph packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run pip install langchain-mcp-adapters langgraph langchain-openai. The MCP adapters package converts MCP tools into native LangChain BaseTool objects.
2

Connect via HTTP transport
Use MultiServerMCPClient with "transport": "http" pointing to your Vinkius endpoint. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Create a ReAct agent
Pass the discovered tools to create_react_agent() from LangGraph. The agent automatically routes Cloud DNS (Anycast DNS Provider API) tool calls through the MCP protocol.
4

Run with any LLM
Swap ChatOpenAI for ChatAnthropic, ChatGoogleGenerativeAI, or any LangChain-compatible model. The MCP tools work identically across all providers.

agent.py

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

async with MultiServerMCPClient({
    "cloud-dns-anycast-dns-provider-api-mcp": {
        "transport": "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,
    )
    result = await agent.ainvoke({
        "messages": "List recent Cloud DNS (Anycast DNS Provider API) transactions"
    })
    print(result["messages"][-1].content)

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Common questions about Cloud DNS (Anycast DNS Provider API) MCP in LangChain

Install langchain-mcp-adapters to connect this MCP Server to your agent. This exposes `create_record` and `list_zones` directly to your pipeline constructor.

Yes, every call to `update_record` or `list_records` flows through your standard LangChain callbacks. You see the exact payload, execution time, and any API errors inside your LangSmith dashboard.

Your agent runs `list_zones` to find the correct target domain, then dynamically passes that zone ID to `create_record`. This allows a single LangChain run to configure multiple isolated domains in sequence.

The server runs statelessly through the Vinkius sandbox, but you can use LangChain session contexts if your agent needs to persist zone IDs between chain steps. This keeps your DNS modifications predictable.

Your DNS zone IDs, record values, and API keys stay inside the secure, ephemeral V8 isolate managed by Vinkius. No DNS records or configuration data are ever stored or logged outside your active execution session.

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