How to integrate Here MCP with LangChain

This guide walks you through connecting Here to LangChain using the Composio tool router. By the end, you'll have a working Here agent that can find coffee shops near central park, get driving route for delivery truck, convert address to latitude and longitude through natural language commands. This guide will help you understand how to give your LangChain agent real control over a Here account through Composio's Here MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved.

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HERE Technologies offers robust mapping and location data APIs for developers. It delivers precise geolocation, routing, and map visualization to power location-aware apps.

98 Tools

Introduction

This guide walks you through connecting Here to LangChain using the Composio tool router. By the end, you'll have a working Here agent that can find coffee shops near central park, get driving route for delivery truck, convert address to latitude and longitude through natural language commands.

This guide will help you understand how to give your LangChain agent real control over a Here account through Composio's Here MCP server.

Before we dive in, let's take a quick look at the key ideas and tools involved.

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TL;DR

Here's what you'll learn:
  • Get and set up your OpenAI and Composio API keys
  • Connect your Here project to Composio
  • Create a Tool Router MCP session for Here
  • Initialize an MCP client and retrieve Here tools
  • Build a LangChain agent that can interact with Here
  • Set up an interactive chat interface for testing

What is LangChain?

LangChain is a framework for developing applications powered by language models. It provides tools and abstractions for building agents that can reason, use tools, and maintain conversation context.

Key features include:

  • Agent Framework: Build agents that can use tools and make decisions
  • MCP Integration: Connect to external services through Model Context Protocol adapters
  • Memory Management: Maintain conversation history across interactions
  • Multi-Provider Support: Works with OpenAI, Anthropic, and other LLM providers

What is the Here MCP server, and what's possible with it?

The Here MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Here account. It provides structured and secure access to powerful location, mapping, and geocoding services, so your agent can perform actions like searching places, calculating routes, fetching map imagery, and converting addresses or coordinates on your behalf.

  • Smart place discovery and suggestions: Ask your agent to find points of interest, get autosuggested places based on partial queries, or discover addresses near a location.
  • Geocoding and reverse geocoding: Convert addresses to geographic coordinates or vice versa, enabling seamless location lookup and mapping in your workflows.
  • Map tile and imagery retrieval: Direct your agent to fetch satellite, base, or hybrid map tiles for specific locations, zoom levels, and formats for rich visual context.
  • Advanced routing and fleet planning: Have your agent calculate optimized routes with vehicle profiles, constraints, and even isolines for reachable areas based on time or distance.
  • Nearby search and contextual browsing: Let your agent browse or search for places around a given location, filtered by categories or names, to surface relevant local information.

What is the Composio tool router, and how does it fit here?

What is Composio SDK?

Composio's Composio SDK helps agents find the right tools for a task at runtime. You can plug in multiple toolkits (like Gmail, HubSpot, and GitHub), and the agent will identify the relevant app and action to complete multi-step workflows. This can reduce token usage and improve the reliability of tool calls. Read more here: Getting started with Composio SDK

The tool router generates a secure MCP URL that your agents can access to perform actions.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Step by step10 STEPS
1

Prerequisites

Before starting this tutorial, make sure you have:
  • Python 3.10 or higher installed on your system
  • A Composio account with an API key
  • An OpenAI API key
  • Basic familiarity with Python and async programming
2

Getting API Keys for OpenAI and Composio

OpenAI API Key
  • Go to the OpenAI dashboard and create an API key. You'll need credits to use the models, or you can connect to another model provider.
  • Keep the API key safe.
Composio API Key
  • Log in to the Composio dashboard.
  • Navigate to your API settings and generate a new API key.
  • Store this key securely as you'll need it for authentication.
3

Install dependencies

npm install @composio/langchain @langchain/core @langchain/openai @langchain/mcp-adapters dotenv

Install the required packages for LangChain with MCP support.

What's happening:

  • @composio/langchain provides Composio integration for LangChain
  • @langchain/mcp-adapters enables MCP client connections
  • @langchain/core is the core agent framework
  • dotenv/config loads environment variables
4

Set up environment variables

bash
COMPOSIO_API_KEY=your_composio_api_key_here
COMPOSIO_USER_ID=your_composio_user_id_here
OPENAI_API_KEY=your_openai_api_key_here

Create a .env file in your project root.

What's happening:

  • COMPOSIO_API_KEY authenticates your requests to Composio's API
  • COMPOSIO_USER_ID identifies the user for session management
  • OPENAI_API_KEY enables access to OpenAI's language models
5

Import dependencies

import { Composio } from '@composio/core';
import { LangchainProvider } from '@composio/langchain';
import { MultiServerMCPClient } from "@langchain/mcp-adapters";
import { createAgent } from "langchain";
import * as readline from 'readline';
import 'dotenv/config';

dotenv.config();
What's happening:
  • We're importing LangChain's MCP adapter and Composio SDK
  • The dotenv/config import loads environment variables from your .env file
  • This setup prepares the foundation for connecting LangChain with Here functionality through MCP
6

Initialize Composio client

const composioApiKey = process.env.COMPOSIO_API_KEY;
const userId = process.env.COMPOSIO_USER_ID;

if (!composioApiKey) throw new Error('COMPOSIO_API_KEY is not set');
if (!userId) throw new Error('COMPOSIO_USER_ID is not set');

async function main() {
    const composio = new Composio({
        apiKey: composioApiKey as string,
        provider: new LangchainProvider()
    });
What's happening:
  • We're loading the COMPOSIO_API_KEY from environment variables and validating it exists
  • Creating a Composio instance that will manage our connection to Here tools
  • Validating that COMPOSIO_USER_ID is also set before proceeding
7

Create a Tool Router session

const session = await composio.create(
    userId as string,
    {
        toolkits: ['here']
    }
);

const url = session.mcp.url;
What's happening:
  • We're creating a Tool Router session that gives your agent access to Here tools
  • The create method takes the user ID and specifies which toolkits should be available
  • The returned session.mcp.url is the MCP server URL that your agent will use
  • This approach allows the agent to dynamically load and use Here tools as needed
8

Configure the agent with the MCP URL

const client = new MultiServerMCPClient({
    "here-agent": {
        transport: "http",
        url: url,
        headers: {
            "x-api-key": process.env.COMPOSIO_API_KEY
        }
    }
});

const tools = await client.getTools();

const agent = createAgent({ model: "gpt-5", tools });
What's happening:
  • We're creating a MultiServerMCPClient that connects to our Here MCP server via HTTP
  • The client is configured with a name and the URL from our Tool Router session
  • getTools() retrieves all available Here tools that the agent can use
  • We're creating a LangChain agent using the GPT-5 model
9

Set up interactive chat interface

let conversationHistory: any[] = [];

console.log("Chat started! Type 'exit' or 'quit' to end the conversation.\n");
console.log("Ask any Here related question or task to the agent.\n");

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: 'You: '
});

rl.prompt();

rl.on('line', async (userInput: string) => {
    const trimmedInput = userInput.trim();

    if (['exit', 'quit', 'bye'].includes(trimmedInput.toLowerCase())) {
        console.log("\nGoodbye!");
        rl.close();
        process.exit(0);
    }

    if (!trimmedInput) {
        rl.prompt();
        return;
    }

    conversationHistory.push({ role: "user", content: trimmedInput });
    console.log("\nAgent is thinking...\n");

    const response = await agent.invoke({ messages: conversationHistory });
    conversationHistory = response.messages;

    const finalResponse = response.messages[response.messages.length - 1]?.content;
    console.log(`Agent: ${finalResponse}\n`);
        
        rl.prompt();
    });

    rl.on('close', () => {
        console.log('\n👋 Session ended.');
        process.exit(0);
    });
What's happening:
  • We initialize an empty conversationHistory list to maintain context across interactions
  • A readline interface is used to continuously accept user input from the command line
  • When a user types a message, it's added to the conversation history and sent to the agent
  • The agent processes the request using the invoke() method with the full conversation history
  • Users can type 'exit', 'quit', or 'bye' to end the chat session gracefully
10

Run the application

main().catch((err) => {
    console.error('Fatal error:', err);
    process.exit(1);
});
What's happening:
  • We call the main() function to start the application

Complete Code

Here's the complete code to get you started with Here and LangChain:

import { Composio } from '@composio/core';
import { LangchainProvider } from '@composio/langchain';
import { MultiServerMCPClient } from "@langchain/mcp-adapters";  
import { createAgent } from "langchain";
import * as readline from 'readline';
import 'dotenv/config';

const composioApiKey = process.env.COMPOSIO_API_KEY;
const userId = process.env.COMPOSIO_USER_ID;

if (!composioApiKey) throw new Error('COMPOSIO_API_KEY is not set');
if (!userId) throw new Error('COMPOSIO_USER_ID is not set');

async function main() {
    const composio = new Composio({
        apiKey: composioApiKey as string,
        provider: new LangchainProvider()
    });

    const session = await composio.create(
        userId as string,
        {
            toolkits: ['here']
        }
    );

    const url = session.mcp.url;
    
    const client = new MultiServerMCPClient({
        "here-agent": {
            transport: "http",
            url: url,
            headers: {
                "x-api-key": process.env.COMPOSIO_API_KEY
            }
        }
    });
    
    const tools = await client.getTools();
  
    const agent = createAgent({ model: "gpt-5", tools });
    
    let conversationHistory: any[] = [];
    
    console.log("Chat started! Type 'exit' or 'quit' to end the conversation.\n");
    console.log("Ask any Here related question or task to the agent.\n");
    
    const rl = readline.createInterface({
        input: process.stdin,
        output: process.stdout,
        prompt: 'You: '
    });

    rl.prompt();

    rl.on('line', async (userInput: string) => {
        const trimmedInput = userInput.trim();
        
        if (['exit', 'quit', 'bye'].includes(trimmedInput.toLowerCase())) {
            console.log("\nGoodbye!");
            rl.close();
            process.exit(0);
        }
        
        if (!trimmedInput) {
            rl.prompt();
            return;
        }
        
        conversationHistory.push({ role: "user", content: trimmedInput });
        console.log("\nAgent is thinking...\n");
        
        const response = await agent.invoke({ messages: conversationHistory });
        conversationHistory = response.messages;
        
        const finalResponse = response.messages[response.messages.length - 1]?.content;
        console.log(`Agent: ${finalResponse}\n`);
        
        rl.prompt();
    });

    rl.on('close', () => {
        console.log('\nSession ended.');
        process.exit(0);
    });
}

main().catch((err) => {
    console.error('Fatal error:', err);
    process.exit(1);
});

Conclusion

You've successfully built a LangChain agent that can interact with Here through Composio's Tool Router.

Key features of this implementation:

  • Dynamic tool loading through Composio's Tool Router
  • Conversation history maintenance for context-aware responses
  • Async Python provides clean, efficient execution of agent workflows
You can extend this further by adding error handling, implementing specific business logic, or integrating additional Composio toolkits to create multi-app workflows.
TOOLS

Supported Tools

Every Here action and event your agent gets out of the box.

Autosuggest Places

Tool to fetch possible completions for a partial search term.

Browse Places

Tool to search for places around a given location with optional filters.

Calculate Fleet Telematics Route

Calculate optimal routes between multiple waypoints supporting various transport modes (car, truck, bicycle, pedestrian).

Cancel Tour Planning Problem

Tool to cancel a running asynchronous tour planning optimization job.

Coordinates to Tile Indices

Tool to convert geographic coordinates to Web Mercator XYZ tile indices.

Decode Route Handle

Tool to decode and return a route from a previously calculated route handle via POST request.

Discover Places

Tool to discover places and addresses by free-form text near a location.

Solve Vehicle Routing Problem

Tool to solve a Vehicle Routing Problem (VRP) by optimizing routes for a fleet of vehicles serving multiple jobs.

Find Optimal Waypoint Sequence

Tool to find the optimal sequence of waypoints using POST request to solve the Travelling Salesman Problem.

Geocode Address

Tool to convert structured address data into geographic coordinates.

Get Aliases Service Health

Tool to check the health status of the HERE Tracking aliases service.

Get Aliases Service Version

Tool to get the current version of the HERE Tracking Aliases service.

Get Associations Service Health

Tool to check the health status of the HERE Tracking Associations API service.

Get Associations Service Version

Tool to retrieve the current version of the HERE Associations tracking service.

Get Address Autocomplete

Tool to get address autocomplete suggestions for partial address queries.

Get Base Map Tile

Retrieves a base map tile image from HERE Raster Tile API v3.

Get Bulkjobs Service Health

Tool to check the health status of the HERE Tracking bulkjobs service.

Get Bulkjobs Service Version

Tool to retrieve the current version of the HERE Bulkjobs tracking service.

Get C2C Service Health

Tool to check HERE C2C service health status.

Get C2C Service Version

Tool to get the current version of the HERE C2C tracking service.

Get Copyright

Tool to retrieve copyright information for HERE map tiles.

Get Transit Departures

Tool to get next departures from transit stations.

Get Events Health Status

Tool to check the health status of the HERE Events API service.

Get Events Service Version

Tool to get the current version of the HERE Events service.

Get Features

Tool to retrieve available map features per style for tile rendering.

Get Geofences Health

Tool to check the health status of the HERE Geofences service.

Get Geofences Service Version

Tool to get the current version of the HERE Geofences service.

Get Service Health Status

Tool to check the health status of the HERE Tracking API service.

Get Incident By ID

Tool to get details of a specific traffic incident by its ID.

Get Raster Tile API Info

Tool to get metadata about the HERE Raster Tile API v3.

Get Isolines

Tool to calculate isolines.

Get Labels Service Health

Tool to check the health status of the HERE Labels service.

Get Labels Service Version

Tool to retrieve the current version of the HERE Labels service.

Get Label Tile

Retrieves a map tile image with text labels using HERE Raster Tile API v3.

Get Supported Languages

Tool to retrieve supported languages for map tile labels from HERE Raster Tile API.

Get Largedata Service Health

Tool to check the health status of the HERE Tracking largedata service.

Get Largedata Service Version

Tool to retrieve the current version of the HERE largedata tracking service.

Get Locations Service Health

Tool to check the health status of HERE's locations tracking service.

Get Locations Service Version

Tool to retrieve the current version of the HERE Tracking Locations service.

Get Map Image

Retrieves a static map image from HERE Map Image API v3.

Get Map Tile with Transit

Tool to request a map tile with public transport overlay from HERE Raster Tile API v3.

Compute Routing Matrix

Computes routing matrices for batch distance and travel time calculations between multiple origins and destinations.

Get Matrix Calculation Result

Tool to retrieve the result of a successfully completed matrix calculation.

Get Metadata Service Health

Tool to retrieve the health status of the HERE Tracking metadata service.

Get Service Version

Tool to retrieve the current version number of the HERE Tracking service.

Get Notifications Service Health

Tool to check the health status of the HERE Tracking Notifications service.

Get Notifications Service Version

Tool to get the current version of the HERE Notifications service.

Get OpenAPI Specification

Tool to retrieve the OpenAPI 3 specification for the HERE Traffic API v7.

Get Political Views

Tool to retrieve available geopolitical views for HERE map rendering.

Get Tour Planning Solution

Tool to retrieve the solution for a completed tour planning problem.

Get Matrix Routing Profile

Tool to retrieve a specific matrix routing profile definition by its ID.

List Matrix Routing Profiles

Tool to list all supported predefined routing profiles for matrix routing calculations.

Get Registry Health

Tool to check the health status of the HERE Tracking Registry service.

Get Registry Service Version

Tool to get the current version of the HERE Registry service.

Get Service Health Status

Tool to check the HERE Tracking service health status.

Get Raster Map Tile

Tool to retrieve a raster map tile image for a specific zoom level, column, and row from HERE Raster Tile API v3.

Calculate Routes

Tool to calculate routes between waypoints supporting multiple transport modes (car, truck, pedestrian, bicycle, scooter, taxi, bus).

Get Rules Service Health

Tool to check the health status of the HERE Tracking Rules service.

Get Rules Service Version

Tool to retrieve the current version of the HERE Tracking Rules service.

Get Sensors Health

Tool to check the health status of the HERE Tracking Sensors service.

Get Sensors Service Version

Tool to retrieve the current version of the HERE Tracking sensors service.

Get Shadows Service Health

Tool to check the health status of the HERE Tracking Shadows service.

Get Shadows Service Version

Tool to retrieve the current version of the HERE Shadows tracking service.

Get Shipments Health

Tool to check the health status of the HERE Shipments service.

Get Shipments Service Version

Tool to get the HERE shipments tracking service version.

Get Transit Stations

Tool to search for transit stations around a location.

Get Tour Planning Job Status

Check the status of an asynchronous tour planning optimization job.

Get Server Timestamp

Tool to get the current server timestamp from HERE Tracking API.

Get Traces Service Health

Tool to check the health status of the HERE Tracking service.

Get Tracking Service Version

Tool to retrieve the current version of the HERE Tracking service.

Get Traffic Flow

Tool to retrieve real-time traffic flow data.

Get Traffic Incidents

Tool to fetch real-time traffic incidents within a specified area.

Get Traffic Tile

Retrieve a traffic flow overlay tile image showing real-time traffic conditions.

Get Users Service Health

Tool to check the HERE Tracking Users API service health status.

Get Users Service Version

Tool to get the current version of the HERE tracking service.

Get Vector Tile

Retrieves protocol buffer encoded binary vector tiles using HERE Vector Tile API v2.

Get Vector Tiles Layers Documentation

Tool to retrieve OMV-2 layers documentation for HERE Vector Tiles.

Get Vector Tiles Copyright

Tool to retrieve copyright information for HERE vector tiles.

Get Vector Tiles Info

Tool to retrieve the current map version from HERE Vector Tiles Service.

Get Vector Tiles Languages

Tool to retrieve supported languages for vector map tiles from HERE Vector Tiles API.

Get Vector Tiles OpenAPI Specification

Tool to retrieve the OpenAPI specification for the HERE Vector Tiles API v2.

Get Vector Tiles Proto Formats

Tool to retrieve a list of available protocol buffer formats from HERE Vector Tiles Service.

Get Vector Tiles Proto File

Tool to retrieve protocol buffer (.

Get Vector Tiles Political Views

Tool to retrieve available political views for HERE vector tiles.

Get Version

Tool to retrieve the version information of the HERE Traffic API.

Get Waypoint Sequence

Optimizes the visit order of multiple waypoints between a fixed origin and destination.

Daily Weather Forecast

Get 7-day weather forecasts for any location worldwide.

Get Weather Observation

Tool to retrieve current weather observation.

Import Route from Trace

Tool to import and calculate a route from GPS trace points.

Locate Device

Determine device location based on WiFi and cellular network measurements.

Lookup Location by HERE ID

Retrieves comprehensive details for a location using its HERE ID.

Calculate Routes via POST

Calculate routes using POST method with extensive customization options via request body.

Reverse Geocode Coordinates

Converts geographic coordinates (latitude, longitude) into human-readable addresses and location details.

Submit Tour Planning Problem

Submit a tour planning problem synchronously to solve vehicle routing problems with constraints like time windows, capacity, and vehicle types.

Submit Tour Planning Problem (Async)

Submit a tour planning problem asynchronously for large-scale vehicle routing optimization.

Weather Alerts

Retrieve severe weather alerts for specified locations or routes.

Get Astronomy Forecast

Tool to fetch astronomical data (sunrise, sunset) for a specific location.

Hourly Weather Forecast

Tool to fetch hourly weather forecasts.

FRAMEWORKS

How to build Here MCP Agent with another framework

ChatGPT logo

ChatGPT

Use Here MCP with ChatGPT

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Here MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Here MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Here MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use Here MCP with Claude Cowork

Codex logo

Codex

Use Here MCP with Codex

Cursor logo

Cursor

Use Here MCP with Cursor

OpenClaw logo

OpenClaw

Use Here MCP with OpenClaw

Hermes logo

Hermes

Use Here MCP with Hermes

CLI logo

CLI

Use Here MCP with CLI

Google ADK logo

Google ADK

Use Here MCP with Google ADK

Vercel AI SDK logo

Vercel AI SDK

Use Here MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Here MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Here MCP with LlamaIndex

CrewAI logo

CrewAI

Use Here MCP with CrewAI

OpenCode logo

OpenCode

Use Here MCP with OpenCode

VS Code logo

VS Code

Use Here MCP with VS Code

FAQ

Frequently asked questions

With a standalone Here MCP server, the agents and LLMs can only access a fixed set of Here tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Here and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. LangChain fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Here tools.

Yes, absolutely. You can configure which Here scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Here data and credentials are handled as safely as possible.

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Karan skipped his own birthday party to fix our critical issue. It was 10pm and he diverted his Waymo to help us instead. This really sets the bar — it shows the commitment you need when users rely on your software.

Harsha Gaddipati
Harsha Gaddipati
Co-founder, Slashy

A lot of students tell us that the moment their connected tools start talking to each other inside Opennote feels almost magical. The agent just knows them, and it's immensely helped keep new users on the platform.

Abhi Arya
Abhi Arya
Co-founder, Opennote

We chose Composio over Pipedream because it delivered depth where it mattered — niche tools and tricky edge cases other platforms simply ignored. That gave us confidence to scale without compromising.

Nirman Dave
Nirman Dave
CEO, Zams

As a solo builder, shipping fast is life or death. The only way I can outcompete incumbents is by outmanoeuvring them. Getting bogged down managing agent auth would have been a death sentence.

Ryan Yu
Ryan Yu
Founder, Extra Thursday

Before Composio, adding tool integrations was slow and resource-intensive. Each one could take weeks of engineering time, and maintaining them meant constantly keeping up with API changes.

Tomisin Jenrola
Tomisin Jenrola
Founder & CEO, SwarmZero

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

Jerome Leclanche
Jerome Leclanche
Co-Founder, Ingram Technologies