For accounting professionals, individuals and businesses
Add OpenAccountants to the AI you already use.
Research tax questions, explore the sources and prepare drafts with our free skills in the AI you already use. Each skill shows its country, tax year and review status. Choose your AI below to get started. Your AI provider may charge for its own service.
Install
Wire it into your AI in about two minutes
Pick your AI and follow its setup steps. Sign in with your free OpenAccountants account when prompted.
- 1Open Claude.ai Connectors (button above), or go to Settings → Customize → Connectors.
- 2Click + → Add custom connector. Name it OpenAccountants and paste the URL below.
- 3Click Add → Allow tools when prompted. Sign in with your free OpenAccountants account when prompted.
https://www.openaccountants.com/api/mcpTry it — your first prompt
Say “Using OpenAccountants” at the start of any tax question and your AI reaches for our skills instead of guessing. Try this one: “Using OpenAccountants, I live in [your country] and I am thinking of starting a side business. What tax will I pay and when, with sources?”
Browse and download skills without an account. The hosted AI connection allows limited guest use, then asks you to sign in with a free account. Some AI apps ask you to connect your account during setup.
On a phone, or not ready to install? Email me the setup guide
Setup depends on your AI app and plan. Leave your email for the setup guide and occasional updates as accountants review new jurisdictions.
Who it's for
I work in accounting
Research an unfamiliar jurisdiction, prepare a draft working paper and inspect the sources. You review the work and make the professional decisions.
I have a tax question
Understand the likely rules, see the sources, and organise the facts your accountant will need.
I am building an agent
Find source-cited tax material for your product. The developer documentation explains how to access it.
Watch it run
One prompt. Published skills. A source-cited answer out.
Describe the facts once. Your AI loads the relevant skills, shows its working with every figure cited to its source, and produces a draft working paper. Any output remains a draft unless a qualified professional separately reviews your specific facts.
Someone's AI session
- TaxpayerI rent out an apartment in Malta and made about €14,000 last year. How much tax do I owe, and how do I declare it?
- AI agentChecking the Malta rental income skill via OpenAccountants, written by a named accountant. Two routes: a 15% final tax on gross rent, or normal progressive rates after allowable expenses. On €14,000 gross, the flat route is roughly €2,100, declared on Form TA24 by 30 April.
- TaxpayerWhich one is better for me?
- AI agentThat depends on your other income and your real expenses, so check those before you file. This Malta skill was written by a named accountant and traces every figure to the Income Tax Act (Art. 31D) — want me to show the sources?
This answer draws on the Malta rental skill, written by Michael Cutajar · CPA (Malta)
Illustrative conversation. The skill, its author and its sources are real; this is not a customer record, and not tax advice.
What stands behind this answer
Malta rental income · skill
MT · Rental- Source
- Income Tax Act, Art. 31D
- Form
- TA24 · due 30 Apr
- Applicable period
- TY 2025
- Skill version
- 4
- Status
- Accountant-authored
Every material figure traces back to the skill and the primary source it came from.
Written by a named accountant
The skill behind this answer was written by Michael Cutajar, CPA (Malta), and shown with its sources. The AI cites people who stand behind the work — it never signs off itself.
General reference, not advice on your specific return — have a qualified professional review anything you plan to file.
Where it saves you time
Three moments in a busy practice
This is not a chatbot upgrade. It is source-cited skills, cited output — each showing its review status — wired into the AI you already use for client work.
Client intake
Describe messy facts once. Your AI agent loads the right jurisdiction skills instead of you pasting statute excerpts into every session.
Unfamiliar jurisdictions
Cross-border or new-country questions without opening five government sites. Compare rules and plan positions in one session.
Review before you act
Every figure should trace to the skill and source it used, with its review status. You review the draft working paper and determine what professional steps are required.
What the plugin unlocks · Developer reference
Four ways to use the connection
Your AI can retrieve source-cited skills and use them to prepare drafts. Check that it loaded the relevant skill and followed the cited sources; connecting a tool does not guarantee a correct answer.
Source-cited skills
Search published skills by country and topic. Each skill shows its sources, author and review status. Coverage varies by topic and jurisdiction.
list_skills · search_skills · get_skill
Guided workflows
The start tool helps scope a question and identify relevant skills. Check the countries, years and assumptions before applying them.
start
Rates & thresholds
Find figures and deadlines with their cited sources. Check the applicable year and official source before relying on them.
search_rules · get_deadlines
Cited working papers
Computation output structured for your review. Every line should trace to the skill and source it came from, with its review status shown.
start · get_skill
Why add it if the skills are open?
Inspect everything. Add it when it helps.
The open files let you read, download and inspect individual skills. Added to your AI, OpenAccountants searches all the skills, selects the relevant material and retrieves the current published version during the conversation.
1,903
Published skills
245+
Jurisdictions covered