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wsystem-dev

wsystem-dev E Invoice API

EU e-invoice validation (EN 16931, XRechnung; UBL, CII, ZUGFeRD/Factur-X PDF) and creation (JSON -> UBL)

Documentation Provider Profile APIs.io OpenAPI GitHub

wsystem-dev E Invoice API is one of 8 APIs that wsystem-dev publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 6 JSON Schema definitions.

Tagged areas include E-invoice. The published artifact set on APIs.io includes an OpenAPI specification and 6 JSON Schemas.

This API exposes 13 operations across 13 paths, and defines 3 schemas. It is described by OpenAPI 3.2.0, at version 0.3.61.

Requests are made against a single base URL, https://api.wsystem.dev.

13 operations 13 paths 3 schemas 7 GET6 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
0.3.61
Base URL
https://api.wsystem.dev
Authentication
API Key
Contact
W System
License
Proprietary API; MCP server code MIT
Resource Areas
1

Authentication & Security 1

wsystem-dev E Invoice API declares 1 security scheme for authenticating requests. An API key is passed in the header as X-API-Key (ApiKeyAuth).

  • ApiKeyAuth — Optional monthly-plan key. Without it: free tier, then x402 pay-per-call.

Paths & Operations 13

Across 13 paths, the API surfaces 13 operations — 7 GET, 6 POST. Each is listed below with its method, path, parameters, and response codes.

E-invoice 13

EU e-invoice validation (EN 16931, XRechnung; UBL, CII, ZUGFeRD/Factur-X PDF) and creation (JSON - UBL)

GET
/einvoice/mandate-terms
Get the Peppol mandate terms to show the signer
einvoiceMandateTerms 1 param → 200422
POST
/einvoice/mandates
Record a company's Peppol mandate (click-through acceptance)
createPeppolMandate 1 param body → 201422
GET
/einvoice/mandates/{mid}
Get one of your Peppol mandate records
getPeppolMandate 2 params → 200422
POST
/einvoice/mandates/{mid}/revoke
Revoke a Peppol mandate
revokePeppolMandate 2 params → 200422
POST
/einvoice/validate
Validate an EU e-invoice (EN 16931, XRechnung; UBL, CII, ZUGFeRD/Factur-X PDF)
validateEinvoice 1 param body → 200422402429
POST
/einvoice/parse
Read an incoming EU e-invoice (UBL, CII, ZUGFeRD/Factur-X PDF) into JSON
parseEinvoice body → 200402429
POST
/einvoice/create
Create a valid EU e-invoice (UBL 2.1) from simple JSON
createEinvoice body → 200422402429
GET
/einvoice/route
"Can I e-invoice this company?" VAT + Peppol + country mandate lookup
einvoiceRoute 2 params → 200422402429
GET
/fr/pa-registry
Is this platform on France's official list of Plateformes Agréées (PA)? (free)
frPaRegistry 3 params → 200422
GET
/einvoice/sample
Example JSON body for POST /einvoice/create (free)
einvoiceSample → 200
POST
/einvoice/send
SANDBOX: verify buyer - create - validate - route - transmit (mock or…
sendEinvoice body → 200422402429
GET
/einvoice/evidence-key
Public key (JWK) for verifying /einvoice/send evidence receipts (free)
einvoiceEvidenceKey → 200
GET
/einvoice/usage
Aggregate e-invoice usage counts for the current UTC month (free; no PII)
einvoiceUsage 1 param → 200422

Schemas 3

The contract defines 3 schemas that model the data the API accepts and returns. The most detailed are MandateIn (12 properties), ValidationError (5 properties), HTTPValidationError (1 property). Each schema is shown below with its type and property counts.

ValidationError
object
5 properties 3 required
MandateIn
object
12 properties 10 required
HTTPValidationError
object
1 property

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

wsystem-dev-e-invoice-api-openapi.yml Raw ↑

Other APIs wsystem-dev publishes across the network.

wsystem-dev Billing API
AE Profile APIs.io
wsystem-dev Company API
AE Profile APIs.io
wsystem-dev EORI API
AE Profile APIs.io
wsystem-dev Health API
AE Profile APIs.io
wsystem-dev KYB API
AE Profile APIs.io
wsystem-dev Sanctions API
AE Profile APIs.io
wsystem-dev VAT API
AE Profile APIs.io
#E-invoice
← Back to W APIs
API Details
ID
wsystem-dev:wsystem-dev-e-invoice-api
Base URL
https://api.wsystem.dev
Docs
https://api.wsystem.dev/docs
Provider
wsystem-dev
APIs.io →  GitHub →
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