LibreChat setup
Add Asterionyx to LibreChat as a custom OpenAI-compatible endpoint in librechat.yaml.
This page describes how to point LibreChat at Asterionyx’s Chat Completions endpoint. It is a setup guide, not a partnership or endorsement.
https://api.a.eus/v1librechat.yaml excerpt
Last verified against LibreChat custom endpoint documentation on 2026-08-27. Restart after changing the file. A clean LibreChat install was not run in this environment.
endpoints:
custom:
- name: "Asterionyx"
apiKey: "${ASTERIONYX_API_KEY}"
baseURL: "https://api.a.eus/v1"
models:
default: ["<MODEL_ID_FROM_CATALOG>"]
fetch: true
titleConvo: true
titleModel: "<MODEL_ID_FROM_CATALOG>"
modelDisplayLabel: "Asterionyx"Open librechat.yaml
In your LibreChat deployment, add a custom endpoint entry under endpoints.custom.
Set baseURL
Set baseURL to the Asterionyx Base URL shown below.
Store the API key safely
Put your Asterionyx key in an environment variable and reference it from librechat.yaml instead of writing the key directly into the file.
List the Model IDs
Add the published Asterionyx model IDs you want to expose.
Restart LibreChat
Restart the LibreChat server or container, then choose Asterionyx from the endpoint selector.
Troubleshooting
401 / unauthorized
Recopy the API key from the portal. Do not use a placeholder or a key from another account.
402 / insufficient Credits
Create a recharge in the portal. The same API key and Base URL continue to work after Credits are added.
Unknown model
Copy a published public model ID from the live Model Catalog instead of typing a remembered name.