Configuration - Rebuno Docs

Everything Nu keeps is in ~/.nu, or in NU_HOME if you set it. The container sees it at /home/nu/.nu.

Path	Contents
`compose.yaml`, `.env`	The Compose deployment and its environment
`policy.yaml`	Your policy rules
`mcp.json`	MCP servers
`models.json`	Custom model providers, in Pi’s format
`settings.json`	Settings, including package settings
`packages.json`, `packages/`, `registry/`	Installed packages and their tools
`skills/`	Skills
`specialists/`	Specialists
`secrets/`	Secrets, model sign-ins (`auth.json`), and generated tokens
`workspace/`	Nu’s working files, shared with the sandbox
`nu.db`	Memory and schedules
`postgres/`	The kernel’s database

Settings

nu set timeZone America/New_York
nu set defaultThinkingLevel high
nu set heartbeat "0 */2 * * *"

Setting	Default
`timeZone`	The container’s time zone, usually UTC. Schedules use it
`defaultThinkingLevel`	`medium`. Also `off`, `minimal`, `low`, `high`, `xhigh`, or `max`
`heartbeat`	`/30 * * *`. Any cron expression, or `off`
`compactionModel`	Nu’s model. A `provider/model` for summarizing long conversations
`updateCheck`	`on`. Nu checks GitHub for a new release once a day. `off` stops it
`liveUrl`	`http://127.0.0.1:4122`. The address in browser handoff links

Packages have their own settings, set with nu config set <namespace> <key> <value>.

Models

nu login signs in to a provider, and /model in chat picks the model. Both save it as defaultProvider and defaultModel. Sign-ins are kept in ~/.nu/secrets/auth.json, in Pi’s format. An API key in ~/.nu/.env, such as ANTHROPIC_API_KEY, works without signing in.

Terminal client

The client connects to http://127.0.0.1:4122 with the token Nu generated in ~/.nu/secrets/terminal_token. nu connect points it at Nu on another machine and saves the address and token in ~/.nu/client.json. See Remote access. NU_GATEWAY_URL overrides the address.