A free account is all it takes: sign in with your e-mail, switch to Sandbox, and create a test API key. The sandbox is free, reads your own documents, and delivers webhooks, so the whole integration can be built and rehearsed before anything real is filed. Paste the key into Authorize below and send any request. A live key is refused from a browser on purpose: real keys belong on a server.
Works with any agent and any editor. The prompt points it at llms.txt, the skill and the OpenAPI document, tells it to build on the sandbox first, and to ask you for a key rather than invent one.
Register PV, storage, heat pumps, wallboxes and air conditioning with the responsible German grid operator, through one API. Base URL https://netz-api.wisnots.com, the key in Authorization: Bearer, JSON in and out; files as multipart/form-data on the /upload routes. A wnz_test_ key is the sandbox and a wnz_live_ key is live: same host, same calls.
POST /v1/anmeldungen/{typ} with the installation data, or POST /v1/anmeldungen/{typ}/upload with files, intent: "draft" and an Idempotency-Key.case.extraction_completed on a webhook, or poll GET /v1/anmeldungen/{id} until status leaves extracting.PATCH /v1/anmeldungen/{id} with declared values for the blocking entries of open[].POST /v1/anmeldungen/{id}/file with an Idempotency-Key files the registration.The same as text: llms.txt, llms-full.txt and the OpenAPI document.