AccuWeather MCP Server for LangChain 10 tools — connect in under 2 minutes
LangChain is the leading Python framework for composable LLM applications. Connect AccuWeather through Vinkius and LangChain agents can call every tool natively. combine them with retrievers, memory, and output parsers for sophisticated AI pipelines.
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Vinkius supports streamable HTTP and SSE.
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({
"accuweather": {
"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 AccuWeather, 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 AccuWeather MCP Server
Access AccuWeather's superior weather forecasting — the industry standard used by enterprises worldwide for accurate, localized weather data. Connect AccuWeather to your AI agent to get current conditions, daily and hourly forecasts, severe weather alarms, and activity planning indices for any location on Earth — all through natural conversation.
LangChain's ecosystem of 500+ components combines seamlessly with AccuWeather 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
- Current Conditions — Get real-time temperature, RealFeel, humidity, wind, UV index, and visibility for any city.
- Daily Forecasts — Retrieve 1 to 15-day forecasts with high/low temperatures, precipitation probability, and sunrise/sunset times.
- Hourly Forecasts — Get hour-by-hour weather for up to 120 hours (5 days) for precise planning.
- Weather Alarms — Monitor active severe weather alerts including hurricanes, tornadoes, floods, and heat advisories.
- Activity Indices — Get recommendations for outdoor activities, UV exposure, running, golf, fishing, and more.
- Location Search — Find any city, town, or place worldwide and get its weather.
- Metric Units — All data returned in Celsius, km/h, and kilometers for international use.
The AccuWeather 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 AccuWeather to LangChain via MCP
Follow these steps to integrate the AccuWeather 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 AccuWeather via MCP
Why Use LangChain with the AccuWeather MCP Server
LangChain provides unique advantages when paired with AccuWeather through the Model Context Protocol.
The largest ecosystem of integrations, chains, and agents. combine AccuWeather 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 AccuWeather queries for multi-turn workflows
AccuWeather + LangChain Use Cases
Practical scenarios where LangChain combined with the AccuWeather MCP Server delivers measurable value.
RAG with live data: combine AccuWeather tool results with vector store retrievals for answers grounded in both real-time and historical data
Autonomous research agents: LangChain agents query AccuWeather, synthesize findings, and generate comprehensive research reports
Multi-tool orchestration: chain AccuWeather tools with web scrapers, databases, and calculators in a single agent run
Production monitoring: use LangSmith to trace every AccuWeather tool call, measure latency, and optimize your agent's performance
AccuWeather MCP Tools for LangChain (10)
These 10 tools become available when you connect AccuWeather to LangChain via MCP:
get_current_conditions
Returns temperature (metric), weather text (e.g. "Partly sunny"), RealFeel temperature, humidity, wind speed and direction, UV index, visibility, cloud cover, and precipitation. Essential for instant weather checks. Use get_location_by_key first to find the correct location key. Get current weather conditions for a location
get_current_conditions_metric
Returns temperature in Celsius, wind in km/h, visibility in kilometers. Includes RealFeel temperature, humidity, UV index, wind gusts, and precipitation data. Use for international audiences or scientific analysis. Get current weather conditions with detailed metric values
get_daily_forecast
Each day includes high and low temperatures, weather conditions, precipitation probability, wind speed, UV index, sunrise/sunset times, and air quality information. Returns data in metric units (Celsius, km/h). Essential for trip planning, event scheduling, and agricultural decisions. Use 5 days for standard weekly forecasts. Get daily weather forecast for a location
get_extended_forecast
While forecasts beyond 7-10 days have lower accuracy, this is useful for event planning, travel preparation, and agricultural scheduling. Each day includes high/low temperatures, precipitation probability, and general conditions. Use for planning events 2 weeks in advance. Get 15-day extended weather forecast
get_hourly_forecast
Each hour includes temperature, weather icon, precipitation probability, wind speed and direction, and cloud cover. Essential for detailed planning — knowing exactly when rain will start, when temperatures peak, or when conditions are safe for outdoor activities. Returns data in metric units. Use 24 hours for tomorrow planning. Get hourly weather forecast for a location
get_index_groups
This helps you understand what types of indices are available (outdoor activities, health, home & garden, etc.) before querying specific indices for a location. Use this to discover what activity planning indices are supported. Get available index groups and categories
get_location_by_key
Returns the city name, country, region, timezone, coordinates, elevation, and administrative area. Use this to verify you have the correct location before making weather queries. Get detailed information about a location by its AccuWeather key
get_weather_alarms
Includes severe weather alerts such as hurricanes, tornadoes, flood warnings, heat advisories, and winter storm warnings. Each alarm includes severity level, description, start and end times, and source. Essential for safety planning, emergency preparedness, and travel decisions. Returns empty if no active alarms. Get active weather alarms and warnings for a location
get_weather_indices
Includes indices for outdoor activity suitability, flight delay probability, UV exposure, running, hiking, golf, fishing, lawn mowing, composting, and more. Each index includes a numeric value, category (e.g. "Excellent", "Poor", "Good"), and descriptive text. Essential for activity planning, health advisories, and lifestyle decisions. Get weather indices (outdoor activity, flight, UV, etc.) for a location
search_location
The location key is required for other weather queries. Returns matching locations with their keys, country, region, and coordinates. Use this as the first step before any weather query. For example, search for "New York" to find the correct location key for New York City. Supports partial matching and returns multiple results. Search for a location by name to get its AccuWeather location key
Example Prompts for AccuWeather in LangChain
Ready-to-use prompts you can give your LangChain agent to start working with AccuWeather immediately.
"What's the weather like in Tokyo right now?"
"Give me the 5-day forecast for Paris, France."
"Are there any severe weather alerts for Miami right now?"
Troubleshooting AccuWeather MCP Server with LangChain
Common issues when connecting AccuWeather to LangChain through the Vinkius, and how to resolve them.
MultiServerMCPClient not found
pip install langchain-mcp-adaptersAccuWeather + LangChain FAQ
Common questions about integrating AccuWeather 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?
Connect AccuWeather with your favorite client
Step-by-step setup guides for every MCP-compatible client and framework:
Anthropic's native desktop app for Claude with built-in MCP support.
AI-first code editor with integrated LLM-powered coding assistance.
GitHub Copilot in VS Code with Agent mode and MCP support.
Purpose-built IDE for agentic AI coding workflows.
Autonomous AI coding agent that runs inside VS Code.
Anthropic's agentic CLI for terminal-first development.
Python SDK for building production-grade OpenAI agent workflows.
Google's framework for building production AI agents.
Type-safe agent development for Python with first-class MCP support.
TypeScript toolkit for building AI-powered web applications.
TypeScript-native agent framework for modern web stacks.
Python framework for orchestrating collaborative AI agent crews.
Leading Python framework for composable LLM applications.
Data-aware AI agent framework for structured and unstructured sources.
Microsoft's framework for multi-agent collaborative conversations.
Connect AccuWeather to LangChain
Get your token, paste the configuration, and start using 10 tools in under 2 minutes. No API key management needed.