---
title: "Flowie Exchange API"
description: "One REST API for compliant electronic invoicing across 47 countries and every major network — Peppol, France PA/PPF, Italy SDI, Saudi Fatoora, Israel ITA, India GST IRP, Malaysia MyInvois."
canonical: "https://docs.get-flowie.com/"
---

# Flowie Exchange API

One REST API for electronic invoicing across 47 countries and every major
network — Peppol, France PA/PPF, Italy SDI, Saudi Fatoora, Israel ITA, India
GST IRP, Malaysia MyInvois.

Send and receive invoices, credit notes, debit notes and purchase orders;
register a company on Peppol; check whether a recipient is reachable; track a
document through its business lifecycle; and report to national platforms —
through one contract instead of one integration per country.

## Start here

- [API reference](https://docs.get-flowie.com/reference/) — every endpoint, with examples
- [Send an invoice](https://docs.get-flowie.com/guides/send-invoice) — the shortest end-to-end path
- [Receive invoices](https://docs.get-flowie.com/guides/receive-invoices) — inbound and webhooks
- [Sandbox](https://docs.get-flowie.com/sandbox/) — a working key with no signup
- [Authentication for agents](https://docs.get-flowie.com/auth.md) — credentials, errors, revocation

## Machine-readable surfaces

| Surface | URL |
|---|---|
| OpenAPI 3.1 contract | <https://docs.get-flowie.com/openapi.json> |
| Page index for agents | <https://docs.get-flowie.com/llms.txt> |
| Full corpus, one file | <https://docs.get-flowie.com/llms-full.txt> |
| Markdown twin per page | <https://docs.get-flowie.com/llms/> |
| API catalog (RFC 9727) | <https://docs.get-flowie.com/.well-known/api-catalog> |
| Protected resource (RFC 9728) | <https://docs.get-flowie.com/.well-known/oauth-protected-resource> |
| Postman collection | <https://docs.get-flowie.com/postman_collection.json> |

## Authentication in one line

```http
Authorization: Bearer flw_test_…
```

Get a sandbox key with no signup and no human in the loop:

```http
POST https://back.flowie.ink/exchange/v1/sandbox/bootstrap
```

Full detail, including the OAuth 2.0 PKCE and handoff flows, is in
[auth.md](https://docs.get-flowie.com/auth.md).

## Base URLs

| Environment | Base URL |
|---|---|
| Sandbox | `https://back.flowie.ink/exchange` |
| Production | `https://back.p2p-flowie.com/exchange` |

Flowie is a French *Plateforme Agréée* (PA) — the registered status under the
2026 French e-invoicing reform. Country-by-country coverage is documented under
[/compliance/](https://docs.get-flowie.com/compliance/).