cast/README.md
claude-hdb d9525ec1cf feat: assert the token's team before touching Coolify (fail-closed)
Coolify API tokens are team-scoped, and a wrong-team token does not error:
the API resolves what it cannot see to `null` (getResourceByUuid walks
resource → environment → project → team_id and returns null on a mismatch).
To cast, `null` is indistinguishable from "this resource does not exist
yet" — an invitation to create it. So an apply with a token minted under the
wrong team would not fail loudly; it would provision a duplicate set of
resources into the wrong team, against whatever server that team owns.
Silent, mutating, discovered late. That makes this a correctness bug, not
hardening.

- environments.yaml carries a required `team:` per environment (id, name, or
  both). Required is the point: an environment with no declared team is one
  cast cannot verify it is pointed at.
- Every command that reaches a live Coolify (apply, diff, server add, smoke)
  resolves GET /teams/current — the only endpoint that answers "what team
  does this token act as?" — and aborts on mismatch before its first READ,
  not merely its first write: a wrong-team diff reports "everything is
  absent", which is the very lie an apply would then act on.
- server add and smoke take --env for this reason. A server belongs to
  exactly one team forever (no pivot, no is_system_wide escape hatch), and
  smoke writes env vars onto a live app.
- New read-only `cast team` prints the token's team, so the binding can be
  filled in without a chicken-and-egg. With --env it also checks the
  binding: the dry run for "would apply refuse?".

Team id 0 is a first-class value, not a falsy absent — it is the Root Team
that a single-admin instance keeps everything in (app/Models/User.php).

Also records the #4 investigation in docs/semantics.md: GithubApp
`is_system_wide` IS the supported way to serve every team — list_github_apps
scopes to `team_id = token's team OR is_system_wide`, and POST /github-apps
accepts the flag — so per-team App duplication is unnecessary. Corollary:
resolving a GitHub App by name is NOT a proxy for being in the right team,
which is the second reason the assert has to be explicit.

Closes #9

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-12 20:55:04 +00:00

184 lines
8 KiB
Markdown

# cast
Point it at a repo and a state directory; it makes a **Coolify** instance match
what the repo declares. One-way, idempotent, never deletes.
Philosophy (shared with [rig](https://github.com/heavy-duty/rig) and
[claudebox](https://github.com/heavy-duty/claudebox)): **public tool, private
state.** cast holds no hostnames, no bindings, no secrets, nothing about *your*
infrastructure. It reads what you point it at and stores nothing, ever.
`rig` builds the boxes. `cast` fills them.
## Install
```sh
curl -fsSL https://raw.githubusercontent.com/heavy-duty/cast/main/install.sh | bash
```
Needs `node` >= 22.12 and [`age`](https://github.com/FiloSottile/age) (secrets
are decrypted by shelling out to it). Re-run any time to upgrade. Unlike rig —
which is pure bash so it can run on a bare box — cast runs on **your** machine:
it is an API client, and a server should never install it.
The installer symlinks `cast` into `~/.local/bin` (or `/usr/local/bin` as root)
and, if that directory is not already on your `PATH`, appends it to your shell
profile — `.zshrc`, `.bashrc`/`.bash_profile`, or `config.fish`, whichever your
`$SHELL` reads — marked `# added by cast-install` and written only once. The
shell you ran the installer from does not inherit it (a `curl | bash` pipeline
is a subshell), so open a new shell or `source` the profile it names. Set
`CAST_NO_MODIFY_PATH=1` to be left alone and wire `PATH` yourself.
## The two inputs
cast joins a **manifest** (what to deploy) with **state** (where, and with what
values). Neither knows about the other, which is the whole point: a manifest can
live in a product repo without leaking your infrastructure, and your
infrastructure can be re-pointed at a new Coolify without touching a product.
**1. The product repo's `.infra/`** — committed, instance-blind:
```
.infra/
manifest.yaml # applications, databases, services, per environment
env/<app>.<env>.env.template # var NAMES + non-secret values; ${SECRET} placeholders
```
**2. A state directory** — private, yours:
```
environments.yaml # bindings: the team each env's token must belong to,
# which server it deploys onto, the S3 destination,
# GitHub App name, smoke target, guards
secrets/<repo>.<env>.env.age # age-encrypted values for the ${…} placeholders
.coolify.env # COOLIFY_BASE_URL + COOLIFY_ACCESS_TOKEN (never commit)
```
Pass it with `--state <dir>`, or set `CAST_STATE`. Defaults to the cwd.
## Commands
```sh
cast apply <org>/<repo> --env <env> [--path <dir>] [--hostname-overlay <file>]
cast diff <org>/<repo> --env <env> [--full]
cast server add <name> --ip <ip> --key <file> --env <env> [--user root] [--port 22]
cast smoke --env <env>
cast team [--env <env>]
```
- **`apply`** — idempotent create-or-update of every manifest resource, then
redeploy what changed. One-way: it never deletes a resource that Coolify has
and the manifest doesn't. Clones the repo's default branch unless `--path`
points at a local checkout (refused with `--env prod` — prod always reads the
default branch).
- **`diff`** — reports drift, manifest → Coolify. Structural by default; `--full`
also compares env vars. Exits non-zero when dirty, so CI can gate on it.
- **`server add`** — uploads a server's private key and registers it with Coolify.
- **`smoke`** — contract test against `smoke_target`: proves Coolify's bulk env
endpoint still *upserts* rather than replacing. Run it after every Coolify
upgrade — `apply`'s never-delete guarantee rests on that behavior, and the
published OpenAPI does not describe it accurately.
- **`team`** — prints the team the configured token acts as. With `--env`, also
checks it against that environment's `team:` binding and exits non-zero on a
mismatch — the dry run for "would `apply` refuse?", answered without touching
anything.
Every command that reaches a live Coolify takes an `--env`, because every one of
them first asserts the token's team (below).
`--hostname-overlay` swaps domains for a pre-flight run against temporary
hostnames; re-applying **without** it is the cutover.
**[docs/semantics.md](docs/semantics.md)** is the contract behind those
commands: what `apply` guarantees (never deletes, never recreates a database,
fails loudly rather than recreating on un-updatable drift), the `dockercompose`
build pack, the hostname-overlay shapes, and the places Coolify 4.1.2 does not
cooperate — each citation verified against `coollabsio/coolify` v4.1.2 and the
vendored OpenAPI in `reference/`. Read it before changing `apply`.
## Secrets, and attended applies
An environment's age identity is resolved in exactly two ways:
1. `$CAST_AGE_KEY_FILE_<ENV>` — injected for this invocation
2. `~/.config/cast/age-<env>.key` — a standing key on this machine
That is the whole mechanism behind attended vs unattended applies: **an
environment whose key you never leave on disk can only be applied by someone who
injects it.** Keep a standing key for staging if you like; keep prod's in a
password manager and pass it per apply.
The state directory holds ciphertext. It must never hold the identity that opens
it.
## Teams: the one assert cast makes before it touches anything
Coolify API tokens are **team-scoped**, and a token pointed at another team's
resources **does not error**. The API resolves what the token cannot see to
`null` — and to a tool like cast, `null` is indistinguishable from *"this
resource does not exist yet"*, which is an invitation to create it. An `apply`
run with a wrong-team token would not fail; it would silently provision a
**duplicate set of resources into the wrong team**, on whatever server that team
owns. Silent, mutating, discovered late.
So every environment declares the team its token must belong to, and cast
refuses to do anything at all until it has checked:
```yaml
environments:
prod:
server: prod-box
team: { id: 1, name: heavy-duty }
```
Give `id`, `name`, or both — both are compared when both are given. `id` is the
true identity (names can be renamed); `name` is what makes the file readable.
Run `cast team` to print the values for the token you currently have configured.
The check is **fail-closed**: an environment with no `team:` is one whose token
cannot be verified, so it is a schema error, not a warning. It runs before the
first *read*, not merely before the first write — an unasserted `diff` against
the wrong team would report "everything is absent", which is precisely the lie
that an `apply` would then act on.
Nothing below the team scopes a token. A Coolify environment has no team of its
own (it hangs off a project) and no API path scopes by one: **Coolify
environments are an organizational construct, not an auth boundary.** The team
is the only boundary there is, so it is the one cast asserts.
## Guarding an environment
An environment may refuse variables by name pattern:
```yaml
environments:
prod:
server: prod-box
team: { id: 1, name: heavy-duty }
forbidden_var_patterns: ["^ALLOW_"]
```
`apply` then refuses if any such var is **present** on any resource, regardless
of value. `ALLOW_SEED=false` still fails: a var that exists can be flipped on
later in the Coolify UI without touching a manifest, so "off" has to mean absent.
This guard lives in your private state deliberately — not in the product's
manifest. A product-side change must not be able to lower its own guard.
## Scripts
Operational helpers, all argument-driven (`scripts/`): register a GitHub App with
Coolify, restore a database backup into a target container.
**They run where cast runs — off the box.** They drive the Coolify API, or reach a
box over SSH; none of them expects to be executing *on* a server. Anything that
belongs on a box, as root, under a scheduler is [rig](https://github.com/heavy-duty/rig)'s
job, not cast's — including the nightly age-encrypted dump of the control-plane
database, which is now `rig coolify backup install`.
## Development
```sh
npm ci && npm run build && npm test
npm run check # biome
```