Heimdall

[Mar '26] Ensure To Have >64GB Memory Available to Host Successfully

GPT-OSS 120B | Self-host GPT OSS 120B on Railway with a chat UI

Allows Ollama to listen on all interfaces

Comma-separated list of allowed origins for CORS. Needed if you’re connecting a web app (like OpenWebUI) from a different host/domain

Allows the web UI to connect from any origin.

Points OpenWebUI to the internal Ollama API endpoint for model access.

Secret key used by OpenWebUI to secure sessions and authentication.