freee MCP Server for Mastra AI 9 tools — connect in under 2 minutes
Mastra AI is a TypeScript-native agent framework built for modern web stacks. Connect freee through Vinkius and Mastra agents discover all tools automatically. type-safe, streaming-ready, and deployable anywhere Node.js runs.
ASK AI ABOUT THIS MCP SERVER
Vinkius supports streamable HTTP and SSE.
import { Agent } from "@mastra/core/agent";
import { createMCPClient } from "@mastra/mcp";
import { openai } from "@ai-sdk/openai";
async function main() {
// Your Vinkius token. get it at cloud.vinkius.com
const mcpClient = await createMCPClient({
servers: {
"freee": {
url: "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
},
},
});
const tools = await mcpClient.getTools();
const agent = new Agent({
name: "freee Agent",
instructions:
"You help users interact with freee " +
"using 9 tools.",
model: openai("gpt-4o"),
tools,
});
const result = await agent.generate(
"What can I do with freee?"
);
console.log(result.text);
}
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.
Mastra's agent abstraction provides a clean separation between LLM logic and freee tool infrastructure. Connect 9 tools through Vinkius and use Mastra's built-in workflow engine to chain tool calls with conditional logic, retries, and parallel execution. deployable to any Node.js host in one command.
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 Mastra AI 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 Mastra AI via MCP
Follow these steps to integrate the freee MCP Server with Mastra AI.
Install dependencies
Run npm install @mastra/core @mastra/mcp @ai-sdk/openai
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token
Run the agent
Save to agent.ts and run with npx tsx agent.ts
Explore tools
Mastra discovers 9 tools from freee via MCP
Why Use Mastra AI with the freee MCP Server
Mastra AI provides unique advantages when paired with freee through the Model Context Protocol.
Mastra's agent abstraction provides a clean separation between LLM logic and tool infrastructure. add freee without touching business code
Built-in workflow engine chains MCP tool calls with conditional logic, retries, and parallel execution for complex automation
TypeScript-native: full type inference for every freee tool response with IDE autocomplete and compile-time checks
One-command deployment to any Node.js host. Vercel, Railway, Fly.io, or your own infrastructure
freee + Mastra AI Use Cases
Practical scenarios where Mastra AI combined with the freee MCP Server delivers measurable value.
Automated workflows: build multi-step agents that query freee, process results, and trigger downstream actions in a typed pipeline
SaaS integrations: embed freee as a first-class tool in your product's AI features with Mastra's clean agent API
Background jobs: schedule Mastra agents to query freee on a cron and store results in your database automatically
Multi-agent systems: create specialist agents that collaborate using freee tools alongside other MCP servers
freee MCP Tools for Mastra AI (9)
These 9 tools become available when you connect freee to Mastra AI 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 Mastra AI
Ready-to-use prompts you can give your Mastra AI 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 Mastra AI
Common issues when connecting freee to Mastra AI through the Vinkius, and how to resolve them.
createMCPClient not exported
npm install @mastra/mcpfreee + Mastra AI FAQ
Common questions about integrating freee MCP Server with Mastra AI.
How does Mastra AI connect to MCP servers?
MCPClient with the server URL and pass it to your agent. Mastra discovers all tools and makes them available with full TypeScript types.Can Mastra agents use tools from multiple servers?
Does Mastra support workflow orchestration?
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 Mastra AI
Get your token, paste the configuration, and start using 9 tools in under 2 minutes. No API key management needed.