Cargo CDK — declarative workspace-as-code
Use this skill to define a Cargo workspace in TypeScript (define* builders from @cargo-ai/cdk) and reconcile it to live infrastructure with cargo-ai cdk deploy. It is the declarative counterpart to the imperative capability skills: instead of running one CLI command per resource, you write the whole graph once and deploy it repeatably, with a committed cargo.state.json linking your code to what Cargo created.
1) What this skill governs
- Authoring every Cargo resource with a
define*builder that returns a
handle; wiring resources by passing handles to each other (the dependency graph is your variable graph).
- Deploying the graph:
plan(offline diff) →deploy(create/update, write
state) → destroy (tear down). Plus drift (refresh), adoption (import), and recovery (rollback).
- Typing the config against your workspace's real integration schemas
(cargo-ai cdk types).
The CDK spans every resource kind — so it overlaps every imperative capability skill (cargo-connection, cargo-storage, cargo-ai, cargo-orchestration, cargo-content, cargo-hosting, …). Which to reach for is the first decision:
2) CDK or the CLI? — the routing decision
Declarative (this skill) vs imperative (a capability skill).
Use the CDK when the user is managing resources as an artifact:
- "Set up / stand up / bootstrap a whole workspace (as code / from a template)."
- "Make this reproducible / version-controlled / in git / repeatable across
environments (dev → prod)."
- "Deploy these connectors + models + agents together" (a multi-resource graph
wired by dependency).
- Anything that should be re-runnable and diffable, where losing the definition
would be a problem.
Use the matching capability skill (imperative cargo-ai <domain>) when the user is doing a one-off operation or exploring:
- "Create one connector", "add a column to this model", "list connectors",
"run this workflow", "query storage", "read this agent's memory."
- Any read, ad-hoc query, or single mutation that doesn't need to live in code.
When unsure, ask whether the result should be committed and re-deployable. If yes → CDK. If it's a quick action or a read → the capability skill (see the cargo router to pick the right domain).
3) The lifecycle
cargo-ai cdk init <dir> scaffold a project from a template (blank | full)
│
cargo-ai cdk types generate per-workspace types for typed config (optional)
│
(author define* files) importing a .ts file IS registration — no manifest
│
cargo-ai cdk plan offline: compile the graph, diff against cargo.state.json
│
cargo-ai cdk deploy create/update resources in dependency order, write state
│
cargo-ai cdk destroy tear down resources recorded in state
Side branches: cargo-ai cdk refresh (read-only drift report) · deploy --refresh (re-apply code over out-of-band edits) · deploy --prune (delete resources removed from code) · cargo-ai cdk import <id> <uuid> (bind an existing live resource into state) · cargo-ai cdk rollback (restore the pre-deploy state snapshot).
4) Documentation hierarchy
- Level 1 —
SKILL.md(this file): the decision model, lifecycle, critical
rules, and routing.
- Level 2 — Guides:
guides/authoring-resources.md, guides/deploy-and-state.md, guides/typed-config.md.
- Level 2.5 — Recipes:
recipes/*.md— step-by-step playbooks to
follow as your execution plan.
- References —
references/resources.md(the full
builder catalog), references/commands.md (every cargo-ai cdk subcommand + flags), references/troubleshooting.md, and references/examples/full-workspace.md.
5) Read behavior — match the task to a doc and READ IT
| When the task involves… | Read this first | What it gives you |
|---|---|---|
Writing define* files, wiring resources, secret()/env(), defineWorkflow bodies (tool/play logic) | guides/authoring-resources.md | The builder catalog, the handle/ref model, secrets, and how workflow bodies compile. |
plan / deploy / destroy, the state file, drift, adopting existing resources, CI | guides/deploy-and-state.md | The deploy lifecycle, cargo.state.json semantics, drift/import/rollback, async builds. |
Typed config, cargo-ai cdk types, tsconfig wiring, integrations.* in workflow bodies | guides/typed-config.md | What cdk types generates and how to wire it into your project. |
| A field/spec/output for a specific builder | references/resources.md | Every builder → spec fields → which ref each takes → outputs. |
| Exact command flags | references/commands.md | Every cargo-ai cdk subcommand and its flags. |
| A deploy error / footgun | references/troubleshooting.md | The known failure modes and fixes. |
Recipes — follow step-by-step when one matches
| Recipe | Use when… |
|---|---|
recipes/scaffold-a-workspace.md | Standing up a new workspace from scratch (init --template full → types → plan → deploy). |
recipes/add-connector-and-model.md | Adding a data source + a model sourced from it, wired by handle. |
recipes/build-an-agent.md | Composing a model + tool + agent (with uses / models / tools) and deploying. |
recipes/migrate-existing-workspace.md | Bringing an already-live workspace under CDK management via cdk import. |
recipes/deploy-from-ci.md | Deploying non-interactively from CI (token auth + committed state). |
6) Critical rules
- Commit
cargo.state.json. It is the link from your code to the resources
Cargo created — and the only handle on a deployed play or agent (they have no slug). Lose it and those resources orphan; recover a link with cargo-ai cdk import. It records only {hash, uuid, outputs} — never secret values. Git-ignore the working files (cdk init scaffolds this):
.cargo-ai/
cargo.state.lock
cargo.state.bak.json
cargo.state.audit.jsonl
- Secrets: wire credentials with
secret("ENV_VAR")(often
secret("HUBSPOT_API_KEY")). The value is read from the environment at deploy time, kept out of the content hash and out of state, so rotating a token doesn't read as drift. Export the env var before deploying — a missing one fails the deploy with an unresolved ${ENV_VAR} placeholder.
- Wire by handle, never by
.uuid. Pass adefine*handle directly
(dataset: hubspot, tools: [enrich]), or xxRef("uuid") for a resource you didn't define in code (connectorRef, modelRef, folderRef, toolRef, agentRef, …). Where a reference needs per-call options, wrap it as { ref, …options } (e.g. models: [{ ref: contacts, readOnly: true }]).
- Run
cargo-ai cdk typesafter workspace integrations change — it
regenerates .cargo-ai/ so defineConnector/defineModel config (and integrations.* in workflow bodies) type-check against the real schemas. Typing is a bonus, never a gate: deploy works without it.
- Run
cdkcommands from the project root.npx/cargo-airesolve from the
nearest package.json; run elsewhere and .cargo-ai/ and cargo.state.json land in the wrong directory. Use --dir <path> to be explicit.
--yesin CI.deployanddestroyprompt for confirmation; non-interactive
runs must pass --yes.
Prerequisites
Standard Cargo CLI setup (install, login, output conventions) is shared across all skills — see ../cargo/references/prerequisites.md.
Two CDK-specific extras:
- The project needs
@cargo-ai/cdkas a dependency (for thedefine*
builders you import). cargo-ai cdk init scaffolds a package.json with it — then run npm install.
- The
cargo-ai cdkdomain ships with the CLI. Confirm with
cargo-ai cdk --help; an unknown command means the CLI is too old — npm install -g @cargo-ai/cli@latest.
Help
cargo-ai cdk --helpandcargo-ai cdk <subcommand> --helpfor the live flag
surface.
- When a documented command/flag/response doesn't match what you observe, file a
report: cargo-ai workspaceManagement report create (see ../cargo-workspace-management/SKILL.md).






