Frihet MCP Server

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

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What is this

An MCP server that connects your AI assistant to Frihet. 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.

35 tools. 8 resources. 7 prompts. Structured output on every tool. Zero boilerplate.

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Install

One-line (Claude Code, Cursor, Copilot, Codex, Windsurf, Gemini CLI, and more)

npx skills add Frihet-io/frihet-mcp

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)

Use the hosted endpoint at mcp.frihet.io -- zero local dependencies, runs on Cloudflare Workers.

With API key:

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

With OAuth 2.0 + PKCE (browser-based login, no API key needed):

Clients that support OAuth (Claude Desktop, Smithery, etc.) can connect directly to https://mcp.frihet.io/mcp and authenticate via browser. The server implements the full OAuth 2.1 authorization code flow with PKCE.

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

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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"

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What to expect

This MCP is a structured data interface -- you describe what you want in natural language, and the AI creates, queries, or modifies business records in Frihet. All 35 tools are CRUD operations over the REST API.

Works great:

"Create an invoice for TechStart SL, 40h consulting at 75 EUR/h"   --> creates the invoice
"Show unpaid invoices over 1,000 EUR"                               --> queries and filters
"Log a 120 EUR expense for the Madrid train, category: travel"      --> records the expense
"Update client Acme's email to [email protected]"                     --> modifies the record

Does not do:

• OCR or PDF scanning -- you cannot upload an invoice image and have it read
• File upload or attachment handling
• Image processing of any kind

If you need to digitize paper invoices or receipts, extract the data first (e.g., Claude Vision API, a dedicated OCR service, or manual entry), then use the MCP to create the record:

1. Scan/photograph the invoice
2. Use Claude Vision: "Read this invoice image and extract the vendor, items, amounts, and dates"
3. Then: "Create an expense in Frihet for [extracted data]"

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Tools (35)

Invoices (6)

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 (5)

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 (5)

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 (5)

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 (5)

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 (5)

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

All 35 tools return structured output via outputSchema -- typed JSON, not raw text. List tools return paginated results ({ data, total, limit, offset }).

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Resources (5)

Static context the AI can read without making API calls.

Resource	URI	What it provides
API Schema	frihet://api/schema	OpenAPI summary: endpoints, auth, rate limits, pagination, error codes
Tax Rates	frihet://tax/rates	Tax rates by Spanish fiscal zone: IVA, IGIC, IPSI, EU reverse charge, IRPF
Tax Calendar	frihet://tax/calendar	Quarterly filing deadlines: Modelo 303, 130, 390, 420, VeriFactu timeline
Expense Categories	frihet://config/expense-categories	8 categories with deductibility rules, IVA treatment, amortization
Invoice Statuses	frihet://config/invoice-statuses	Status flow (draft > sent > paid/overdue > cancelled), transition rules, webhook events

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Prompts (5)

Pre-built workflows the AI can execute as guided multi-step operations.

Prompt	What it does	Arguments
monthly-close	Close the month: review unpaid invoices, categorize expenses, check tax obligations, generate summary	month? (YYYY-MM)
onboard-client	Set up a new client with correct tax rates by location, optionally create a welcome quote	clientName, country?, region?
quarterly-tax-prep	Prepare quarterly tax filing: calculate IVA/IGIC, identify deductibles, preview Modelo 303/130/420	quarter?, fiscalZone?
overdue-followup	Find overdue invoices, draft follow-up messages, suggest payment reminders	--
expense-batch	Process expenses in bulk: categorize, apply tax rates, flag missing receipts	fiscalZone?

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How it works

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

The server translates tool calls into REST API requests. It handles authentication, rate limiting (automatic retry with backoff on 429), pagination, and error mapping.

Two transports:

• stdio (local) -- npx @frihet/mcp-server with FRIHET_API_KEY
• Streamable HTTP (remote) -- https://mcp.frihet.io/mcp with Bearer token or OAuth 2.0+PKCE

Environment variables

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

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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.

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Claude Code Skill

Beyond raw MCP tools, this repo includes a Claude Code skill that adds business context: Spanish tax rules, workflow recipes, financial reports, and natural language commands.

Install the skill

git clone https://github.com/Frihet-io/frihet-mcp.git
ln -s "$(pwd)/frihet-mcp/skill" ~/.claude/skills/frihet

Or with the universal installer:

npx skills add Frihet-io/frihet-mcp

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.

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

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Development

git clone https://github.com/Frihet-io/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

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Contributing

Contributions are welcome. Please open an issue first to discuss what you'd like to change.

git clone https://github.com/Frihet-io/frihet-mcp.git
cd frihet-mcp
npm install
npm run build   # must pass before submitting

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Current limitations

• No OCR or file upload -- the MCP works with structured data, not images or PDFs. Planned for a future release.
• Single company -- one API key maps to one Frihet workspace. Multi-company support is not yet available.
• Frihet account required -- you need an active account at app.frihet.io and an API key (starts with fri_).

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Links

• Frihet -- The product
• Documentation -- Full docs
• API reference -- REST API
• MCP server docs -- Setup guides, troubleshooting
• Webhook docs -- Events, signatures, retries
• npm -- Package registry
• MCP Registry -- Official MCP Registry
• Smithery -- Smithery marketplace
• Remote endpoint -- Hosted MCP server (Cloudflare Workers)
• OpenAPI spec -- Machine-readable API definition
• MCP specification -- The protocol

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License

MIT. See LICENSE.

Built by Frihet.