freee MCP Server for LangChain 9 tools — connect in under 2 minutes
LangChain is the leading Python framework for composable LLM applications. Connect freee 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
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({
"freee": {
"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 freee, 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 freee MCP Server
Connect your freee (Accounting/HR) account to any AI agent and take full control of your Japanese business operations and general ledger through natural conversation.
LangChain's ecosystem of 500+ components combines seamlessly with freee through native MCP adapters. Connect 9 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
- Accounting Deal Orchestration — Extract explicit general ledger accounting entries including income, expense, and journal boundaries mapped to your Company ID natively
- Invoice State Auditing — Retrieve explicitly attached invoice statuses (sent, unsent, paid, overdue) to resolve your tenant's Accounts Receivable limits limitlessly
- Partner & Address Book Control — Enumerate official business counterparts linking precise vendor, customer, and tax ID profiles synchronously
- Expense Management — Analyze explicit expense claims submitted by employees and track managerial approval states before final settlement flawlessly
- Financial Account Oversight — Identify connected physical bank accounts, credit cards, and offline cash repositories tracked in your freee instance securely
- Tax Compliance Mapping — Execute bulk iterations tracking explicitly registered Japanese Tax mappings evaluating 8%, 10%, and reduced rates synchronously
- Deal Detail Inspection — Fetch strict sub-entry details for specific deals to view settlement flags and connected bank sync boundaries natively
The freee MCP Server exposes 9 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 freee to LangChain via MCP
Follow these steps to integrate the freee 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 9 tools from freee via MCP
Why Use LangChain with the freee MCP Server
LangChain provides unique advantages when paired with freee through the Model Context Protocol.
The largest ecosystem of integrations, chains, and agents. combine freee 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 freee queries for multi-turn workflows
freee + LangChain Use Cases
Practical scenarios where LangChain combined with the freee MCP Server delivers measurable value.
RAG with live data: combine freee tool results with vector store retrievals for answers grounded in both real-time and historical data
Autonomous research agents: LangChain agents query freee, synthesize findings, and generate comprehensive research reports
Multi-tool orchestration: chain freee tools with web scrapers, databases, and calculators in a single agent run
Production monitoring: use LangSmith to trace every freee tool call, measure latency, and optimize your agent's performance
freee MCP Tools for LangChain (9)
These 9 tools become available when you connect freee to LangChain via MCP:
get_deal
Get deal details
get_partner
Get partner details
list_accounts
List all account items
list_deals
List all accounting deals (transactions)
list_expenses
List expense applications
list_invoices
List all invoices
list_partners
List all business partners
list_taxes
List tax codes
list_walletables
List bank accounts and wallets
Example Prompts for freee in LangChain
Ready-to-use prompts you can give your LangChain agent to start working with freee immediately.
"List the last 5 accounting deals in freee"
"Show me pending expense applications"
"What are my active bank accounts in freee?"
Troubleshooting freee MCP Server with LangChain
Common issues when connecting freee to LangChain through the Vinkius, and how to resolve them.
MultiServerMCPClient not found
pip install langchain-mcp-adaptersfreee + LangChain FAQ
Common questions about integrating freee 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 freee 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 freee to LangChain
Get your token, paste the configuration, and start using 9 tools in under 2 minutes. No API key management needed.