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Integration

E-Invoice Checker

Validate, parse and render EU e-invoices. Your client pastes their E-Invoice Checker key once, and your agent or your code works with their access.

Developer tools

About E-Invoice Checker

Through Operate As, your agent, n8n workflow or code works in E-Invoice Checker with your client's own access. Your client pastes their API key from E-Invoice Checker once. We store it encrypted, so it never sits in an email or a shared doc. Your agent reaches any endpoint of E-Invoice Checker's API through the request tool, with the client's access attached.

Common uses in Developer tools

  • Check status and alert the team when something breaks
  • Create and update resources from a workflow
  • Report on usage and costs

E-Invoice Checker

E-Invoice Checker · Developer tools

API key

Validate, parse and render EU e-invoices

The client pastes their API key from E-Invoice Checker's settings. We store it encrypted.

Tested against E-Invoice Checker's live API.

Building with E-Invoice Checker? The docs have setup steps and code for every tool.

Open the E-Invoice Checker docs

Tools

Your agent calls any endpoint of E-Invoice Checker's API with the request tool, with the client's access attached.

Base URL for request

https://einvoicechecker.com

  • request

    HTTPS ANY /v1/clients/{clientId}/e-invoice-checker/{path}

    Any endpoint of E-Invoice Checker's own API, with the client's access attached.

    servicestringrequired
    This service: e-invoice-checker
    methodstringrequired
    GET, POST, PUT, PATCH or DELETE
    pathstringrequired
    The path under https://einvoicechecker.com
    queryobjectoptional
    Query parameters
    bodyobjectoptional
    A JSON body

Over MCP every tool also takes client_id, from list_clients. Over HTTPS send it as clientId to https://api.operate.as/v1.

What the client approves

  • Use the E-Invoice Checker key you paste, with only the access you gave that key

Get started

Send your next client one link

Add a client, select the services, copy the link. You'll get an email the moment their access is ready. Start free, no card required. Paid plans are one flat monthly price, and a busy month never takes your agents offline.