openaccountants

MCP serverCommerce & finance

openaccountants gives your AI accounting skills for tax, VAT, and payroll, all verified by licensed accountants. Once added, your AI can handle accounting questions using guidance that licensed accountants have checked. The skills are open-source, so you can see exactly what sits behind each answer.

Use openaccountants in Claude, ChatGPT or Ahel Desktop

Free. Sign in, add openaccountants and connect your AI. About a minute.

Claude ChatGPT Ahel Desktop

Also: Claude Code · Cursor · Codex

Then ask your AI: use openaccountants to list skills

No key or account is asked for. Not verified by us yet: Ahel has not run a call through it.

Details

Available today. Use it from your connected AI after setup.

No key or account is asked for. Not verified by us yet: Ahel has not run a call through it.

Add openaccountants, then ask your AI a tax, VAT, or payroll question to try it out. If you want to look closer, the skills are available in the open-source repository.

openaccountantsStart free

What your AI can do with it

Answer tax questions with guidance verified by licensed accountants
Work out VAT amounts and answer VAT questions
Help with payroll questions and calculations
Show the open-source skills behind each answer

Install openaccountants

The server’s own address, for the clients that take one directly. Or connect Ahel once and every client you use reads it from one address, with the account kept on Ahel rather than in each client’s config.

Claude Code
claude mcp add --transport http --scope user openaccountants 'https://www.openaccountants.com/api/mcp'
Run it once in your project, then open /mcp to approve any sign-in the server asks for.
Claude Desktop
https://www.openaccountants.com/api/mcp
Add a custom connector in Settings, paste this address, and approve the sign-in.
Cursor
cursor://anysphere.cursor-deeplink/mcp/install?name=openaccountants&config=eyJ1cmwiOiJodHRwczovL3d3dy5vcGVuYWNjb3VudGFudHMuY29tL2FwaS9tY3AifQ==
Open the link and Cursor adds the server at that address.
ChatGPT
https://www.openaccountants.com/api/mcp
In Settings, enable Developer mode, create an MCP app, and paste this address. Your plan and workspace must allow custom apps.
Codex
codex mcp add openaccountants --url 'https://www.openaccountants.com/api/mcp'
Run it once, then sign in with codex mcp login openaccountants if the server asks for an account.

From the project's README

As published by openaccountants/openaccountants in README.md. This repository publishes several servers, so only the opening is shown here.

Open-source Tax Guides your AI can cite — reviewed by named, licensed accountants.

Every AI can do tax math. None of them can stand behind an answer. Here, real accountants put their name, credential and review date on the Guides your AI reads — publicly, on the record, in this repo.

1,890 Guides across 229 jurisdictions · 53 accountant-reviewed · 44 named accountants · 17,265 questions answered through connected AIs

Live from openaccountants.com — updated 2026-10-10 by the nightly sync.

Try it in 60 seconds

Add the hosted connector to Claude, ChatGPT, Cursor, Windsurf or any MCP client:

https://www.openaccountants.com/api/mcp

Shortened here. Read the whole README on GitHub.

Tools it offers (14)

What this server listed when Ahel dialed its public endpoint in Sep 2026, with no key and no account of yours. The names are the server’s own.

list_skills
get_skill
get_skill_sections
search_skills
search_rules
get_deadlines
list_rule_facets
start_help
start
list_jurisdictions
list_verifiers
validate_vat_number
check_audit_exemption
share_with_openaccountants

Signals

GitHub stars: 421
Forks: 59
Last commit: Oct 2026

Advanced

Delivery: openaccountants MCP server → your Ahel connector (mcp.ahel.ai) → your AI.
Item type: mcp-server
Key: io-github-openaccountants-openaccountants
Source: github.com/openaccountants/openaccountants
Hosted endpoint: https://www.openaccountants.com/api/mcp

github.com/openaccountants/openaccountants

More in Commerce & finance

agent402
MCP server · mikeypetrillo
More in Commerce & finance crypto-quant-signal-mcp
MCP server · algovaultlabs
More in Commerce & finance Hive Intelligence MCP
MCP server · hive-intel
More in Commerce & finance keryx
MCP server · tang-vu
More in Commerce & finance truss44-mcp-crypto-price
MCP server · truss44
More in Commerce & finance trading-mcp
MCP server · ai-rook
More in Commerce & finance