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ERP and accounting

Connect Fiken to Hypamoon

Possible, with help from Fiken. The API is documented, but you cannot just create a key: access goes through Fiken first.

Possible

The check

Three questions about the API of Fiken, answered from its own docs.

Public API docs
Yes. Read the docs
A key you create yourself
No. You create a personal API token yourself, but production use needs the paid API module, ordered under Settings, Module access. api.fiken.no
Versions or a changelog
Yes. Versioned API (v2) with an OpenAPI specification. api.fiken.no
How it signs in
A personal API token as a Bearer token for your own integrations; apps that act for other Fiken customers must use OAuth 2.0.
Webhooks
Not confirmed.
Hosting
Cloud
Condition
The API module costs 99 kr per month; during development it works for up to 5 users without it.

In practice

What it takes in a real Fiken administration.

Getting access
Order the API module under Settings, Module access in Fiken, then create a personal API token in your Fiken user settings.
Limits
One concurrent request; more than 4 requests per second may be slowed down, with HTTP 429 and possibly a ban when you exceed it. api.fiken.no
Writing
Read and write. Create and change invoices, contacts, sales, purchases, attachments and more through POST, PUT, PATCH and DELETE.
Cost
99 kr per month for the API module. api.fiken.no

Your own invoice and bookkeeping tools on Fiken, built around your daily work.

  • Contacts, invoices, sales, purchases and bank accounts, from the API module.
  • AI that drafts invoices and spots customers who pay late, with you approving every invoice.
  • A screen for your team and a short weekly email for you.

Ask your chat

Answers straight from your Fiken data, in Claude or another chat with the full Hypamoon connection.

  • Which invoices are past their due date?
  • Which customers bought from us last month?

On a schedule

Fiken has no webhooks we could confirm, so an agent checks every 15 minutes and decides what happens next.

  1. Every 15 minutes

    New orders in your own order form.

    AI decides

    AI matches the order to the right contact and products and drafts the invoice.

    Then

    The invoice draft is created in Fiken for you to check.

    AI proposes, you approve

A screen for your team or customers

An app on your own address, with sign-in, on top of the same Fiken data.

  • For your team

    Your team sees what each customer owes and what came in this week.

Add Hypamoon

Text messages, email, phone, payments and agents run in the same project as the adapter.

  • Email

    Every Monday one email with invoices that became overdue.

Fiken stays the core: your chat builds the rest on its API, as an adapter plus an app and agents in your Hypamoon project. Reading starts after you click Allow in the portal. Every change an agent or a chat makes in Fiken waits for your approval, one call at a time. How adapters work

Good to know

  • Your adapter uses a fixed key: you paste it once in the Hypamoon portal, never in the chat, and it only goes to the API host you allow.
  • Only one API request at a time is allowed, and calls may slow down above 4 per second. Personal tokens may not be used in third party apps.

Try it in your chat

First get access from Fiken. Then fill in what to read and write, and send it.

Say this in your chat

Build the Hypamoon recipe build-an-adapter for Fiken. API docs: https://api.fiken.no/api/v2/docs/. Read: [what]. Write: [what, or nothing].

Open in Claude

In Claude, or another chat with the full Hypamoon connection; adapters are not in ChatGPT yet. You paste the key in the portal, never in the chat. The full recipe

Sources

Checked on 7 November 2026.

Fiken is a name of its owner, used here only to describe the software. This page is not an official integration and Hypamoon has no partnership with Fiken. Found something that changed? Tell us at support.

More in erp and accounting

All 1094 tools

Tool not listed? Ask the chat to check its API.

The same three checks work for any software. Your chat reads the vendor's own docs and tells you what it found.

Say this in your chat

Check if [software] has an open API that a Hypamoon adapter can use: public API docs, a key or token I can create myself without asking the vendor, and versions or a changelog. Link the pages you used.

Open in Claude Open in ChatGPT

Fill in the name of your software. Checking needs no connection to Hypamoon.

Ready to connect Fiken?

Connect your chat once, then ask it to build the adapter.

Start free

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