How do I use fiken-mcp?

1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@fiken-mcp list my unpaid invoices" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

fiken-mcp

by heim

Overview Schema Related Servers Score Discussions

TypeScript

Remote

fiken-mcp

A read-only Model Context Protocol (MCP) server for the Fiken accounting API. Exposes all Fiken GET endpoints as MCP tools so AI assistants (Claude, etc.) can query your accounting data directly.

Read-only guarantee: This server only ever makes HTTP GET requests to the Fiken API. No data is created, modified, or deleted.

Features

61 tools covering the full Fiken v2 read API
Multi-company support — companySlug is a parameter on every tool
Paginated list endpoints with metadata
Serial request queue (respects Fiken's 1 concurrent request per user rule)
Structured error responses — API errors are returned as tool results rather than crashing the session

Related MCP server: FreeAgent MCP Server

Requirements

Node.js 18+
A Fiken API token

Installation

git clone https://github.com/yourusername/fiken-mcp
cd fiken-mcp
npm install
npm run build

Usage

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "fiken": {
      "command": "node",
      "args": ["/absolute/path/to/fiken-mcp/build/index.js"],
      "env": {
        "FIKEN_API_TOKEN": "your-token-here"
      }
    }
  }
}

Config file locations:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json

Claude Code

Add the server to your Claude Code project with:

claude mcp add fiken -- node /absolute/path/to/fiken-mcp/build/index.js

Then set the token:

claude mcp add fiken -e FIKEN_API_TOKEN=your-token-here -- node /absolute/path/to/fiken-mcp/build/index.js

Or if you prefer to keep the config in version control, add it to .mcp.json in your project root:

{
  "mcpServers": {
    "fiken": {
      "command": "node",
      "args": ["/absolute/path/to/fiken-mcp/build/index.js"],
      "env": {
        "FIKEN_API_TOKEN": "your-token-here"
      }
    }
  }
}

To verify the server is connected:

claude mcp list

Other MCP clients

Run the server with the token in the environment:

FIKEN_API_TOKEN=your-token-here node build/index.js

Development (no build step)

FIKEN_API_TOKEN=your-token-here npm run dev

MCP Inspector

FIKEN_API_TOKEN=your-token-here npx @modelcontextprotocol/inspector node build/index.js

Getting a Fiken API token

Log in to fiken.no
Go to Settings → API (or visit https://fiken.no/api/v2/documentation)
Generate a personal API token
Keep it secret — treat it like a password

Available tools

Start with fiken_list_companies to get the companySlug values needed by all other tools.

User

Tool	Description
`fiken_get_user`	Get information about the currently authenticated Fiken user

Companies

Tool	Description
`fiken_list_companies`	List all companies the authenticated user has access to
`fiken_get_company`	Get details for a specific company by slug

Accounts

Tool	Description
`fiken_list_accounts`	List chart of accounts for a company
`fiken_get_account`	Get a specific account by account code
`fiken_list_account_balances`	List account balances for a company
`fiken_get_account_balance`	Get balance for a specific account

Bank

Tool	Description
`fiken_list_bank_accounts`	List bank accounts for a company
`fiken_get_bank_account`	Get a specific bank account by ID
`fiken_list_bank_balances`	List bank balances for all bank accounts

Contacts

Tool	Description
`fiken_list_contacts`	List contacts (customers and suppliers)
`fiken_get_contact`	Get a specific contact by ID
`fiken_list_contact_persons`	List contact persons for a contact
`fiken_get_contact_person`	Get a specific contact person
`fiken_list_contact_groups`	List contact groups

Invoices

Tool	Description
`fiken_list_invoices`	List invoices
`fiken_get_invoice`	Get a specific invoice by ID
`fiken_list_invoice_attachments`	List attachments for an invoice
`fiken_get_invoice_counter`	Get the current invoice number counter
`fiken_list_invoice_drafts`	List invoice drafts
`fiken_get_invoice_draft`	Get a specific invoice draft
`fiken_list_invoice_draft_attachments`	List attachments for an invoice draft

Credit Notes

Tool	Description
`fiken_list_credit_notes`	List credit notes
`fiken_get_credit_note`	Get a specific credit note
`fiken_get_credit_note_counter`	Get the current credit note number counter
`fiken_list_credit_note_drafts`	List credit note drafts
`fiken_get_credit_note_draft`	Get a specific credit note draft

Offers

Tool	Description
`fiken_list_offers`	List offers/quotes
`fiken_get_offer`	Get a specific offer
`fiken_get_offer_counter`	Get the current offer number counter
`fiken_list_offer_drafts`	List offer drafts
`fiken_get_offer_draft`	Get a specific offer draft

Order Confirmations

Tool	Description
`fiken_list_order_confirmations`	List order confirmations
`fiken_get_order_confirmation`	Get a specific order confirmation
`fiken_get_order_confirmation_counter`	Get the current order confirmation counter

Journal Entries

Tool	Description
`fiken_list_journal_entries`	List journal entries
`fiken_get_journal_entry`	Get a specific journal entry
`fiken_list_journal_entry_attachments`	List attachments for a journal entry

Transactions

Tool	Description
`fiken_list_transactions`	List transactions
`fiken_get_transaction`	Get a specific transaction

Sales

Tool	Description
`fiken_list_sales`	List sales
`fiken_get_sale`	Get a specific sale
`fiken_list_sale_attachments`	List attachments for a sale
`fiken_list_sale_drafts`	List sale drafts
`fiken_get_sale_draft`	Get a specific sale draft
`fiken_list_sale_draft_attachments`	List attachments for a sale draft

Purchases

Tool	Description
`fiken_list_purchases`	List purchases
`fiken_get_purchase`	Get a specific purchase
`fiken_list_purchase_attachments`	List attachments for a purchase
`fiken_list_purchase_drafts`	List purchase drafts
`fiken_get_purchase_draft`	Get a specific purchase draft

Products

Tool	Description
`fiken_list_products`	List products
`fiken_get_product`	Get a specific product

Projects

Tool	Description
`fiken_list_projects`	List projects
`fiken_get_project`	Get a specific project

Time Tracking

Tool	Description
`fiken_list_time_entries`	List time entries
`fiken_get_time_entry`	Get a specific time entry
`fiken_list_activities`	List activities (used with time entries)
`fiken_list_time_users`	List users who can log time

Inbox

Tool	Description
`fiken_list_inbox`	List inbox documents
`fiken_get_inbox_document`	Get a specific inbox document

Notes

Amounts are returned in øre (cents) as integers, matching the Fiken API — e.g. 100000 means 1000.00 NOK
Account codes are strings — e.g. "1920" or "1500:10001"
Pagination defaults to page 0, 25 results per page (max 100)
Date filters use YYYY-MM-DD format

Development

npm test          # run tests
npm run build     # compile TypeScript
npm run dev       # run without building (uses tsx)

License

MIT

Install Server

license - permissive license

quality

maintenance

How are these scores calculated?

Maintenance

–Maintainers

–Response time

–Release cycle

–Releases (12mo)

Commit activity

Resources

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