---
title: "Canonical VNB lookup with consolidated code aliases"
method: POST
path: "/api/grid-operations/vnb-lookup-codes"
tags: ["Grid Operations"]
---

# Canonical VNB lookup with consolidated code aliases

`POST /api/grid-operations/vnb-lookup-codes`

## Request

- Base URL: `https://api.cernion.de`
- URL: `https://api.cernion.de/api/grid-operations/vnb-lookup-codes`
- Auth: none declared

Resolve one VNB identity from BDEW/BNR/name/MaStR and return canonical mapping + alias codes from MCP tool vnb_lookup_codes.

## Query parameters

- `token` string

## Request body

- object
  - `bdewCode` string
  - `bnr` string
  - `vnbName` string
  - `mastrId` string
  - `includeAliases` boolean
  - `includeTrace` boolean
  - `limitCandidates` integer
  - `token` string: Optional Cernion MCP token for this request. Overrides CERNION_TOKEN when provided.

## Response `200`

Successful response

- object

---

[API](https://skmtc.dev/cernion/apis/cernion-energy-tools-api.md) · [All operations](https://skmtc.dev/cernion/apis/cernion-energy-tools-api/llms.txt) · [OpenAPI document](https://skmtc.dev/cernion/apis/cernion-energy-tools-api/revisions/cdb94473b538?raw)