Attestwire Invoices API

Validation, generation, evidence bundles and e-mail delivery. Metered.

Operations 5

POST /v1/validate Validate an invoice against EN 16931 business rules #
POST /v1/generate Generate compliant invoice XML #
POST /v1/bundle The invoice, its validation report and a signed manifest, as one ZIP #
POST /v1/send E-mail one validated invoice to one recipient #
POST /v1/parse Read an invoice document into the JSON model #

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/attestwire-com:attestwire-com-invoices-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

attestwire-com-invoices-api-openapi.yml Raw ↑
openapi: 3.2.0
info:
  title: Attestwire Invoices API
  version: 0.1.0
  summary: EN 16931 e-invoice validation and generation.
  description: 'Validate an invoice against EN 16931 and its national CIUS rules (XRechnung, Peppol BIS 3) and get back errors that teach the regulation: every failure carries the official rule id, the business term it constrains, what the rule requires, and how to fix it. Invoices go in and come out in both EN 16931 syntaxes, UBL 2.1 and UN/CEFACT CII; the profile chooses the syntax on generate, and on validate the document''s root element does. The `facturx-en16931` profile is checked against core EN 16931 only — there are no Factur-X-specific rules. PDF: Factur-X and ZUGFeRD files are CII XML inside a PDF/A-3 container. POST /v1/validate and POST /v1/parse open one sent as `application/pdf`, on every plan, and read the XML attached to it; /v1/validate also reports on the PDF. Of the PDF itself, the attachment (its name, /AFRelationship and MIME type) and the XMP metadata are checked, and each problem is an AW-PDF-* finding, none of them fatal; PDF/A conformance itself, and whether the page agrees with the XML, are not checked. The API builds one in exactly one case, profile `facturx-en16931`: a Factur-X / ZUGFeRD PDF (EN 16931 profile), a page drawn from the invoice, written as PDF/A-3B, with the CII embedded as `factur-x.xml` — watermarked as a preview on the free plan, and without the watermark on a paid plan. `POST /v1/generate?format=pdf` returns it, `POST /v1/bundle?format=pdf` puts it in an evidence bundle beside the XML and a signed validation report, and `POST /v1/send` with `"format": "pdf"` e-mails it. Every other invoice the API writes is XML. Sending: `POST /v1/send` e-mails one invoice to one address on request; the API does not operate Peppol or French-platform transmission.'
  contact:
    name: Attestwire
    url: https://attestwire.com
  license:
    name: Proprietary
servers:
- url: https://api.attestwire.com
  description: Production
security:
- bearerAuth: []
tags:


# --- truncated at 32 KB (252 KB total) ---
# Full source: https://artifacts.apis.io/attestwire-com/openapi/attestwire-com-invoices-api-openapi.yml