Category · Finance

Invoicing integrations

72 open-source MCP connectors for invoicing. Each connector exposes the underlying service to your AI agent through a clean tool interface.

Invoicing is where revenue gets recognised, yet the process is full of manual steps: creating invoices, sending them, tracking which are paid, chasing the overdue ones and reconciling payments back against what was issued. Cash flow suffers when follow-up slips. The invoicing integrations here connect your billing systems to WorkAist through MCP, so AI agents run the cycle. An agent can generate an invoice from a completed order or project, send it to the customer, track its status, and send a polite reminder when it passes due. It can match an incoming payment to the right invoice and flag a discrepancy. Connecting invoicing integrations to AI agents means money owed gets billed and chased consistently, with agents handling issuance, reminders and reconciliation so finance isn't manually tracking a spreadsheet of who has paid and who needs another nudge before the period closes.

All connectors

Xero UK🔥

SMB accounting (global, primary UK)

GB
ANAF (e-Factura, SAF-T)

tax authority + e-invoice

RO
bexio

#1 SMB accounting (Swisscom-owned)

CH
e-conomic (Visma)

SMB accounting standard

DK
SDI Agenzia delle Entrate

mandatory e-invoicing gateway

IT
Fatture in Cloud

#1 SMB invoicing + e-invoicing

IT
Fortnox

SMB accounting standard

SE
FreeAgent

SMB accounting

GB
Holded

SMB ERP

ES
lexoffice

SMB accounting by Lexware/Haufe

DE
KSeF (Krajowy System e-Faktur)

national e-invoice system

PL
Moneybird

SMB accounting

NL
myDATA (AADE)

mandatory e-books/e-invoicing

GR
NAV API (online számla)

mandatory e-invoicing reporting

HU
sevDesk

SMB online accounting + invoicing, RESTful API

DE
Smart Bill

SMB invoicing/accounting

RO
Számlázz.hu

#1 invoicing

HU
Tripletex

SMB accounting standard

NO
Anfix

SMB accounting

ES
Aruba Fatturazione Elettronica

e-invoicing via SDI

IT
Billin

SMB invoicing

ES
Billingo

invoicing

HU
Billit

invoicing + Peppol

BE
Billomat

SMB invoicing

DE
Billy

SMB accounting

DK
BoondManager

ESN/consulting PSA

FR
Bullet HQ

freelance accounting

IE
Chorus Pro

public-sector e-invoicing

FR
Conta

SMB

NO
ContaSimple

freelancer accounting

ES
Cuéntica

SMB online accounting

ES
Danea Easyfatt

SMB invoicing

IT
Dinero

SMB accounting

DK
easybill

invoicing + e-invoicing (XRechnung, ZUGFeRD)

DE
EasyFirma

SMB invoicing

AT
Envoice (e-Krediidiinfo)

expense capture

EE
Factur-X

FR/DE hybrid PDF e-invoice

FR
Facturis

invoicing

RO
FactuSOL (Sage)

SMB invoicing

ES
Fakturoid

invoicing

CZ
Fakturownia

invoicing

PL
FastBill

invoicing + DATEV export

DE
FGO (FacturaGO)

invoicing

RO
Heeros

invoicing/accounting

FI
iDoklad (Solitea)

SMB invoicing

CZ
iDoklad SK

invoicing

SK
iFirma

SMB accounting

PL
iKros

cloud accounting

SK
inFakt

freelance accounting

PL
InvoiceXpress

invoicing

PT
KashFlow (IRIS)

SMB accounting

GB
KeyInvoice

invoicing

PT
Merit Aktiva

SMB accounting

EE
MOCO

agency time-tracking + invoicing

DE
Моё дело

SMB accounting

RU
Moloni

SMB invoicing

PT
Oblio

invoicing/accounting

RO
Octobat

invoicing for SaaS

BE
Papierkram

freelancer accounting (EÜR + UStVA)

DE
Procountor

SMB accounting

FI

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AI agents using Invoicing tools

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