frihet-mcp

AI-native MCP server for business management. Servidor MCP nativo con IA para gestión empresarial.

What is this

An MCP server that connects your AI assistant to Frihet ERP. Create invoices by talking. Query expenses in natural language. Manage your entire business from your IDE.

You:     "Create an invoice for TechStart SL, 40 hours of consulting at 75 EUR/hour, due March 1st"
Claude:  Done. Invoice INV-2026-089 created. Total: 3,000.00 EUR + 21% IVA = 3,630.00 EUR.

31 tools. 6 resources. Zero boilerplate.

Install

One line. Pick your tool.

Claude Code / Claude Desktop

{
  "mcpServers": {
    "frihet": {
      "command": "npx",
      "args": ["-y", "@frihet/mcp-server"],
      "env": {
        "FRIHET_API_KEY": "fri_your_key_here"
      }
    }
  }
}

The JSON config is identical for all tools. Only the file path changes.

Remote (no install)

If you prefer not to install anything locally, use the hosted endpoint at mcp.frihet.io:

{
  "mcpServers": {
    "frihet": {
      "type": "streamable-http",
      "url": "https://mcp.frihet.io/mcp",
      "headers": {
        "Authorization": "Bearer fri_your_key_here"
      }
    }
  }
}

Same 31 tools, zero local dependencies. Runs on Cloudflare Workers.

Get your API key

1. Log into app.frihet.io
2. Go to Settings > API
3. Click Create API key
4. Copy the key (starts with fri_) -- it's only shown once

What you can do

Talk to your ERP. These are real prompts, not marketing copy.

Invoicing

"Show me all unpaid invoices"
"Create an invoice for Acme SL with 10h of consulting at 95/hour"
"Mark invoice abc123 as paid"
"How much has ClientName been invoiced this year?"

Expenses

"Log a 59.99 EUR expense for Adobe Creative Cloud, category: software, tax-deductible"
"List all expenses from January"
"What did I spend on travel last quarter?"

Clients

"Add a new client: TechStart SL, NIF B12345678, email [email protected]"
"Show me all my clients"
"Update ClientName's address to Calle Mayor 1, Madrid 28001"

Quotes

"Create a quote for Design Studio: logo design (2000 EUR) + brand guidelines (3500 EUR)"
"Show me all pending quotes"

Webhooks

"Set up a webhook to notify https://my-app.com/hook when invoices are paid"
"List all my active webhooks"

Tools reference

Invoices / Facturas

Expenses / Gastos

Clients / Clientes

Products / Productos

Quotes / Presupuestos

Webhooks

How it works

Your AI assistant          frihet-mcp           Frihet API
      |                        |                    |
      |-- "create invoice" --> |                    |
      |                        |-- POST /invoices ->|
      |                        |<-- 201 Created ----|
      |<-- "Invoice created" --|                    |

The MCP server translates natural language tool calls into REST API requests. It handles authentication, rate limiting (automatic retry on 429), pagination, and error mapping. You just talk.

Environment variables

FRIHET_API_URL is useful if you self-host or want to point to a staging environment.

API limits

Rate limiting is handled automatically with exponential backoff. You don't need to think about it.

Claude Code Skill

Beyond raw MCP tools, Frihet ships a Claude Code skill that adds business intelligence: Spanish tax context, workflow recipes (monthly close, quarterly tax prep, overdue follow-up), formatted financial reports, and natural language commands.

Install the skill

# Clone and symlink
git clone https://github.com/berthelius/frihet-mcp.git
ln -s "$(pwd)/frihet-mcp/skill" ~/.claude/skills/frihet

Commands

The skill knows about IVA rates, IRPF retention, Modelo 303 prep, expense deductibility rules, and Verifactu compliance. It's your accountant in the terminal.

Full documentation: docs.frihet.io/desarrolladores/skill-claude-code

Development

git clone https://github.com/berthelius/frihet-mcp.git
cd frihet-mcp
npm install
npm run build

Run locally:

FRIHET_API_KEY=fri_xxx node dist/index.js

Test with the MCP Inspector:

npx @modelcontextprotocol/inspector node dist/index.js

Why Frihet MCP

The first business management platform with an official MCP server. No other ERP has this.

Links

• Frihet ERP -- The product
• API documentation -- REST API reference
• Webhook documentation -- Events, signatures, retries
• Remote endpoint -- Hosted MCP server (Cloudflare Workers)
• MCP specification -- The protocol

License

MIT. See LICENSE.

Built by BRTHLS.