Configure
Env vars, custom domains, collaborators, source edits, and storage for one app.
All of this lives on the app detail page (/apps/<id>, tabs Overview / Deployments / Metrics / Events / Settings).
Environment variables
Settings → Environment. Variables reach the build, the release command, and the fleet environment. Reads are view-gated, writes admin-gated. Download mirrors the .dev.vars file local dev expects. Names starting with FLAG_ render as on/off toggles (1/0).
Reserved prefixes are dropped silently: PORT, HOST, AWS_*, S3_*, CELLD_*, RUNNER_*, NOITE_*, BETTER_AUTH_*, CADDY_*, LD_*, NODE_OPTIONS, BUN_* (except the cache var). Full detail: Environment variables.
Custom domains
Settings → Custom Domain. Adding a hostname reserves it; the edge picks it up on the next reconcile (seconds). Then point DNS at the server:
dig +short app.<domain>The certificate issues on the first visit (ask-gated on-demand TLS). Validation rules: lowercase DNS shape, ≥ 2 labels, no wildcard/IP/port/path. Platform hostnames are refused; a taken hostname returns 409. There is no DNS ownership check yet — first claimant wins.
Removing a hostname releases it.
Collaborators
Settings → Collaborators. Roles, weakest first:
| Role | Can |
|---|---|
view |
Read the app, logs, metrics, storage |
push |
Everything above, plus push code (create + fast-forward only) |
admin |
Everything above, plus settings, env vars, domains, any push, collaborator management |
Instance admins (the operator track) manage every app without a grant.
Source browser and web commits
The Code button opens /apps/<id>/source: files of the latest pushed commit, a parent diff view, and deep links via ?view= / ?file=. Editing files there stages a web commit — it pushes like a deploy and wakes a sleeping app.
Storage
The Overview tab lists the app’s storage resources; each row opens a detail browser. Kinds: D1 databases, Durable Objects, R2 buckets — as declared by the deployed Wrangler config (read first) or the pushed source. D1 tables page (?p=, ?s=); R2 keys browse by prefix.