ContaBridge

Name: ContaBridge
Author: ArceeDev

by ArceeDevversion 0.2.0i★ –iComputer or cloud

Registry nameio.github.ArceeDev/contabridge-mcp

Install

Overview

Description from the maker (original English)

Convert journals between A3, ContaPlus/Sage 50, QuickBooks, Xero and CSV; bank files to entries.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi3 of 3 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Accounting, finance & tax
You need to fill in: KEYFLINT_LICENSE

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 3 of 3 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: KEYFLINT_LICENSE

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet
PyPIPython’s uv installed (for the uvx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://mcp.keyflint.dev/contabridge/mcp

Or run it on your computer

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "contabridge": {
      "command": "uvx",
      "args": [
        "contabridge-mcp"
      ],
      "env": {
        "KEYFLINT_LICENSE": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add --transport http contabridge https://mcp.keyflint.dev/contabridge/mcp

Or run it on your computer

claude mcp add contabridge --env KEYFLINT_LICENSE=your-value -- uvx contabridge-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "contabridge": {
      "url": "https://mcp.keyflint.dev/contabridge/mcp"
    }
  }
}

Or run it on your computer

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "contabridge": {
      "command": "uvx",
      "args": [
        "contabridge-mcp"
      ],
      "env": {
        "KEYFLINT_LICENSE": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "contabridge": {
      "type": "http",
      "url": "https://mcp.keyflint.dev/contabridge/mcp"
    }
  }
}

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "contabridge": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "contabridge-mcp"
      ],
      "env": {
        "KEYFLINT_LICENSE": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://mcp.keyflint.dev/contabridge/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

KEYFLINT_LICENSE secret required env
Your KeyFlint license (LIC-...). Get one, free trial included, at https://mcp.keyflint.dev

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

The server asks you to sign in before it lists its tools.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account ArceeDev, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
✓ Pass
Endpoint responds
Responded in 84 ms (HTTP 401)
✓ Pass
Sign-in with OAuth
Declares OAuth sign-in, so your AI app can take you to log in
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Accounting, finance & taxi

More stars than 0% of the other 1732 servers in this category
Published to the registry more recently than 99% of the other 1732 servers in this category
Basic checks equal to or better than 100% of the other 1732 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is ContaBridge safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: KEYFLINT_LICENSE

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.2.0) reached the registry today.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Finance Toolkit, SolidInvoice, Korea Tax Calculator

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Finance Toolkit

by JerBouma

500+ transparent financial methods calculated from raw statements, not third-party endpoints.

Computer or cloud★ 5,496MITUpdated today

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SolidInvoice

by SolidInvoice

Create and send invoices and quotes, manage clients, and track payments in SolidInvoice.

Runs in the cloud★ 981MITUpdated 8 days ago

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Korea Tax Calculator

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Korean tax calculation and tax-audit judgment MCP: 96 tools with statutory citations.

Runs on your computer★ 97MITUpdated yesterday

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

contabridge-mcp

An MCP server that moves bookkeeping between Spanish accounting programs and QuickBooks / Xero, built for AI agents that work for gestorías and accounting firms with many clients. It does not store any data between calls, and every result is deterministic.

Tool	Credits	What it does
`convert_journal`	2	Converts a libro diario between a3ASESOR/a3ECO/a3CON (`SUENLACE.DAT`), Sage ContaPlus / Sage 50 (Diario CSV of 142 fields, or XDiario ASCII) spreadsheet CSV (Holded, Excel, any ERP), QuickBooks (Desktop IIF, Online journal CSV) and Xero (manual journal CSV). It resizes subaccounts (`4300001` → `43000001`, `430.1` → `43000001`), renames accounts and renumbers entries.
`bank_to_journal`	3	Turns a Norma 43 bank statement into journal entries against the 572 subaccount. Ordered rules map movements to counterpart accounts (by text, regex, AEB concept or direction), and movements that match no rule go to 555 and are listed.
`build_journal`	2	Writes entries the agent composed (invoices, payroll, accruals) in any of the formats.
`bank_statement_csv`	1	Turns a Norma 43 statement into a bank statement CSV for Xero (precoded template) or QuickBooks Online (3 columns).
`validate_journal`	1	Runs the checks A3 and ContaPlus run on import: balanced entries, debit or credit on each line (never both), PGC groups, fiscal year, mixed account lengths.
`resize_account`, `detect_format`, `pricing`, `credits_balance`	0	Free helpers.

Output files are returned as content and as content_base64. The base64 version is Windows-1252 with CRLF line endings (UTF-8 with BOM for CSV), which is what these programs import.

Charging works like this:

A file that would be rejected (unbalanced, unreadable, missing columns) is refused before any credits are charged.
A failure after charging is refunded.

Formats and sources

A3: "Enlace contable de entrada. Descripción de registros" (Wolters Kluwer). Record type 0, format 5 (512 bytes) and format 4 (256 bytes). When reading, invoice records (types 1, 2 and 9) are skipped and reported in a warning.
ContaPlus: "Protocolo de comunicación de programas de gestión con ContaPlus" (Sage, 2023). Writes Asien, Fecha, SubCta, Contra, Concepto, Documento, MonedaUso=2, EuroDebe and EuroHaber. The fixed-width ASCII variant (32 fields) uses the same layout as the open-source BulmaGés exporter.
QuickBooks Desktop IIF: GENERAL JOURNAL transactions (!TRNS/!SPL/!ENDTRNS, tab separated). Debits are positive and credits negative, so the TRNS amount is minus the sum of its SPL lines. Other IIF lists (accounts, customers) are skipped with a warning.
QuickBooks Online: "Import journal entries" CSV with Journal No., Journal Date, Account Name, Debits, Credits, Description, Name.
Xero: "Import a manual journal" template (*Narration, *Date, Description, *AccountCode, *TaxRate, *Amount, tracking). Lines with the same Narration and Date form one journal. xero_tax_rate sets the TaxRate as named in that organisation (UK No VAT, AU BAS Excluded, NZ No GST, US Tax Exempt).
QuickBooks and Xero dates follow date_style: mdy (default for QuickBooks), dmy (default for Xero) or iso. Amounts use a decimal point, and a comma is always read as a thousands separator. Their accounts are names or codes, so they are validated against their own chart, not the PGC. Use account_map to translate them when converting to or from A3/ContaPlus.
CSV: columns are detected in Spanish and English (fecha, cuenta, debe, haber, importe+d/h…), or set with column_map. A file without an entry number is grouped into entries by accumulating lines until they balance.

Install

All you need is your KeyFlint license (LIC-...). The gateway URL, its public key and the checkout link have defaults.

Claude Desktop, one click: download contabridge-mcp-X.Y.Z.mcpb from the latest release, double-click it and paste your license. No terminal, no JSON.

Claude Code:

claude mcp add contabridge -e KEYFLINT_LICENSE=LIC-... -- uvx contabridge-mcp

Cursor, Windsurf, Claude Desktop (JSON):

"mcpServers": { "contabridge": { "command": "uvx", "args": ["contabridge-mcp"], "env": { "KEYFLINT_LICENSE": "LIC-..." } } } }

Optional: KEYFLINT_URL, KEYFLINT_PUBLIC_KEYS (fetched from the gateway and cached in ~/.keyflint/keyring.json when unset), KEYFLINT_CHECKOUT_URL.

Hosted mode: CONTABRIDGE_TRANSPORT=http contabridge-mcp --http (license per request, Authorization: Bearer LIC-...).

Tuning: CONTABRIDGE_PRICES (convert_journal=3,bank_to_journal=5), CONTABRIDGE_MAX_BYTES.

Visual cards (MCP Apps)

In Claude, ChatGPT, VS Code and Goose every paid tool and credits_balance renders as an interactive card in the chat: credit balance with a refill bar and a buy button, or a result summary (key figures, issues, table preview and credits charged). It is the ui://contabridge/card.html resource, self-contained with no network access. Other clients keep getting the same JSON as before.

Claude skill

skills/contabridge/SKILL.md (zipped in distribution/contabridge-skill.zip) tells the agent which tool to use, which account length to ask for, and how to save the file.

Tests

pip install -e '.[test]' && pytest

The tests use a fake KeyFlint gateway and locally signed licenses, so they need no network. A3 and ContaPlus layouts are checked position by position against the official specifications.

License

Business Source License 1.1. Source available; production use needs a KeyFlint license (or must be non-commercial). Each version becomes Apache 2.0 four years after release. See LICENSE.

ContaBridge

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Or run it on your computer

Or run it on your computer

Or run it on your computer

Or run it on your computer

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Accounting, finance & taxi

Common questions

Alternatives

Finance Toolkit

SolidInvoice

Korea Tax Calculator

README from the maker

contabridge-mcp

Formats and sources

Install

Visual cards (MCP Apps)

Claude skill

Tests

License