Faktoora e-Invoicing API

Name: Faktoora e-Invoicing API API
Brand: Faktoora e-Invoicing API
Availability: InStock

★ Only Publicly Available OpenAPI DocumentFinanceAccountingapiKey87 EndpointsREST

For Agents

Create EN16931-compliant electronic invoices, import and validate incoming invoices, manage customers and products, and subscribe to invoice status webhooks for European B2B and B2G e-invoicing.

Connect the Faktoora e-Invoicing API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Faktoora e-Invoicing API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.

Install Jentic One Beta (Self-Hosted)

Jentic One Host machine

# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh

Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register       # connects your agent to your Jentic One instance

Jentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.

Capabilities

What an agent can do with Faktoora e-Invoicing API API.

Issue an EN16931-compliant invoice in XRechnung or ZUGFeRD format

Import an incoming invoice file and run structural and tax validation

Track invoice status from issue through delivery, payment, and archive

Manage a customer master record with VAT IDs and country codes

GET STARTED

Start building with Faktoora e-Invoicing API API

Explore with Jentic

View OpenAPI Document

Jentic publishes the only available OpenAPI document for Faktoora e-Invoicing API, keeping it validated and agent-ready.

Jentic publishes the only available OpenAPI specification for Faktoora e-Invoicing API, keeping it validated and agent-ready. Faktoora is a European electronic invoicing platform that creates, validates, and exchanges invoices in compliance with the EN16931 standard, including XRechnung, ZUGFeRD, and Peppol formats required for B2G and B2B e-invoicing across the EU. The 87-endpoint API covers outgoing and incoming invoices, structured invoice import with validation, customer and product catalogues, product bundles, and webhooks for real-time invoice status events.

Use Cases

Patterns agents use Faktoora e-Invoicing API API for, with concrete tasks.

★ EU E-Invoicing Compliance

Issue and receive invoices in EN16931-compliant formats (XRechnung, ZUGFeRD) required for selling into German public sector and increasingly for B2B across the EU. Faktoora handles format generation, validation, and delivery so teams do not build XML schema validators in-house. Cuts compliance project time from weeks to days for businesses adapting to mandatory e-invoicing.

POST /invoices with buyer details, line items, and target format=XRechnung to generate a compliant invoice and capture the returned faktooraId

Invoice Capture and Validation

Automate accounts payable by importing supplier invoices via /import and pulling structured line items, taxes, and payment terms once validated. The validation endpoint flags structural and tax errors before the invoice ever reaches the ERP, reducing rejection cycles and manual data entry.

POST /import with the supplier invoice file, GET /import/{importId}/validation to confirm it passed, then GET /import/{importId}/content/lineitems for the structured data

Real-Time Invoice Status Sync

Drive an internal dashboard or finance Slack channel from invoice lifecycle events using Faktoora webhooks. Subscribe once, then receive structured events as invoices are issued, dispatched, paid, or archived. Eliminates polling /invoices/{faktooraId}/status and surfaces problems (rejected, overdue) without delay.

POST a webhook subscription for the invoice.status_changed event, then on receipt route 'rejected' status events to the finance Slack channel

AI Agent Invoicing via Jentic

An AI accounts agent can issue invoices on demand by calling Faktoora through Jentic. Given a customer record, line items, and target format, the agent runs POST /invoices and returns the faktooraId and status. Jentic isolates the X-API-KEY and exposes the 87 operations as discoverable tools.

Search Jentic for 'create an EN16931 invoice', load the POST /invoices schema, and execute with buyer, line items, and format to return the faktooraId

Key Endpoints

87 endpoints — jentic publishes the only available openapi specification for faktoora e-invoicing api, keeping it validated and agent-ready.

METHOD

PATH

DESCRIPTION

POST

/invoices

Create an outgoing EN16931-compliant invoice

GET

/invoices

List issued invoices with filters

GET

/invoices/{faktooraId}/status

Get current status of an invoice

POST

/import

Import an incoming invoice file for validation

GET

/import/{importId}/validation

Get validation result for an imported invoice

GET

/import/{importId}/content/lineitems

Retrieve structured line items from an imported invoice

GET

/import/{importId}/content/taxes

Retrieve tax breakdown from an imported invoice

POST

/invoices

Create an outgoing EN16931-compliant invoice

GET

/invoices

List issued invoices with filters

GET

/invoices/{faktooraId}/status

Get current status of an invoice

POST

/import

Import an incoming invoice file for validation

GET

/import/{importId}/validation

Get validation result for an imported invoice

Why though Jentic?

Three things that make agents converge on Jentic-routed access.

Credential isolation

The X-API-KEY header is stored encrypted in the Jentic vault (MAXsystem) and injected at call time. Production and demo keys can be kept separately so agents target the right environment without exposing secrets.

Intent-based discovery

Agents search by intent like 'create an EN16931 invoice' and Jentic returns the relevant Faktoora operation across the 87 endpoints, with input schemas ready to fill.

Time to first call

Direct Faktoora integration: 3-5 days to map endpoints, handle EN16931 format selection, and wire webhooks. Through Jentic: under 1 hour — search, load schema, execute.

Related APIs

Alternatives and complements available in the Jentic catalogue.

Complementary

FreeAgent

Accounting platform that can consume Faktoora-generated invoices for ledger and tax reporting

Use FreeAgent alongside Faktoora when you need full bookkeeping and tax filing on top of e-invoicing compliance.

Complementary

Xero Accounting

Accounting platform widely used in EU SMBs that pairs with Faktoora's compliant invoice generation

Use Xero alongside Faktoora when the customer keeps their books in Xero but needs EN16931-compliant outputs Xero alone does not produce.

Alternative

Sage

Accounting suite with built-in invoicing, broader in scope but less specialised in EN16931 compliance

Choose Sage when full ERP and accounting are required; choose Faktoora when the priority is EU e-invoicing compliance over general bookkeeping.

FAQs

Specific to using Faktoora e-Invoicing API API through Jentic.

Why is there no official OpenAPI spec for Faktoora e-Invoicing API?

Faktoora does not publish a public OpenAPI specification. Jentic generates and maintains this spec so that AI agents and developers can call Faktoora e-Invoicing API via structured tooling. It is validated against the live API and kept up to date. Get started at https://app.jentic.com/sign-up.

What authentication does the Faktoora e-Invoicing API use?

Faktoora uses an API key passed in the X-API-KEY request header. There is also a sandbox base URL (api.demo.faktoora.com) for testing. Through Jentic, both production and demo keys can be stored in the vault and selected per environment.

Which e-invoicing formats does this API generate?

Faktoora generates EN16931-compliant formats including XRechnung (the German B2G standard) and ZUGFeRD (hybrid PDF/A-3 with embedded XML). The format is selected on POST /invoices and is required for selling into German public sector and increasingly mandated for EU B2B.

Can I extract line items and tax data from a supplier PDF invoice?

Yes. POST /import accepts the supplier invoice file. After validation completes, GET /import/{importId}/content/lineitems returns structured line items and GET /import/{importId}/content/taxes returns the tax breakdown, both ready to push into an ERP.

How do I issue an invoice through Jentic?

Run pip install jentic, then search 'create an EN16931 invoice'. Jentic returns the POST /invoices operation with its schema. Execute with buyer details, line items, and format; Jentic handles the X-API-KEY header and returns the new faktooraId.

Does the API support webhooks for invoice events?

Yes. The /webhooks endpoints let you subscribe to invoice and import lifecycle events. This avoids polling /invoices/{faktooraId}/status and surfaces rejection, payment, and archive events as they happen.