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"
      }
    }
  }
}

Tool	Config file
Claude Code	`~/.claude/mcp.json`
Claude Desktop	`~/Library/Application Support/Claude/claude_desktop_config.json`
Cursor	`.cursor/mcp.json` or `~/.cursor/mcp.json`
Windsurf	`~/.windsurf/mcp.json`
Cline	VS Code settings or `.cline/mcp.json`
Codex CLI	`~/.codex/config.toml` (MCP section)

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

Log into app.frihet.io
Go to Settings > API
Click Create API key
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 admin@techstart.es"
"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

Tool	What it does
`list_invoices`	List invoices with pagination
`get_invoice`	Get full invoice details by ID
`create_invoice`	Create a new invoice with line items
`update_invoice`	Update any invoice field
`delete_invoice`	Permanently delete an invoice
`search_invoices`	Find invoices by client name

Expenses / Gastos

Tool	What it does
`list_expenses`	List expenses with pagination
`get_expense`	Get expense details
`create_expense`	Record a new expense
`update_expense`	Modify an expense
`delete_expense`	Delete an expense

Clients / Clientes

Tool	What it does
`list_clients`	List all clients
`get_client`	Get client details
`create_client`	Register a new client
`update_client`	Update client info
`delete_client`	Remove a client

Products / Productos

Tool	What it does
`list_products`	List products and services
`get_product`	Get product details
`create_product`	Add a product or service
`update_product`	Update pricing or details
`delete_product`	Remove a product

Quotes / Presupuestos

Tool	What it does
`list_quotes`	List all quotes
`get_quote`	Get quote details
`create_quote`	Draft a new quote
`update_quote`	Modify a quote
`delete_quote`	Delete a quote

Webhooks

Tool	What it does
`list_webhooks`	List configured webhooks
`get_webhook`	Get webhook details
`create_webhook`	Register a new webhook endpoint
`update_webhook`	Modify events or URL
`delete_webhook`	Remove a webhook

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

Variable	Required	Default
`FRIHET_API_KEY`	Yes	--
`FRIHET_API_URL`	No	`https://api.frihet.io/v1`

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

API limits

Limit	Value
Requests per minute	100 per API key
Results per page	100 max (50 default)
Request body	1 MB max
Webhook payload	100 KB max
Webhooks per account	20 max

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

Command	What it does
`/frihet status`	Account overview, recent activity, pending payments
`/frihet invoice`	Create, list, search invoices
`/frihet expense`	Log and query expenses
`/frihet clients`	Manage client database
`/frihet quote`	Create and manage quotes
`/frihet report`	Financial summaries (P&L, quarterly, overdue)
`/frihet webhooks`	Configure automation triggers
`/frihet setup`	Guided setup and connection test

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

	Frihet	Holded	Billin	Quipu	Anfix
Official MCP server	Yes	No (third-party)	No	No	No
Claude / Cursor / Windsurf	Yes	No	No	No	No
Public REST API	Yes	Yes	Limited	Yes	No
Webhooks with HMAC verification	Yes	No	No	No	No
AI assistant built-in	Yes	No	No	No	No
Open source tooling	Yes	No	No	No	No

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

License

MIT. See LICENSE.

Built by BRTHLS.

Frihet MCP Server

What is this

Install

Claude Code / Claude Desktop

Remote (no install)

Get your API key

What you can do

Invoicing

Expenses

Clients

Quotes

Webhooks

Tools reference

Invoices / Facturas

Expenses / Gastos

Clients / Clientes

Products / Productos

Quotes / Presupuestos

Webhooks

How it works

Environment variables

API limits

Claude Code Skill

Install the skill

Commands

Development

Why Frihet MCP

Links

License

Resources

Tools

Latest Blog Posts

MCP directory API