Bootstrap, configure, extend, and operate ObjectStack runtimes. Covers project setup (`defineStack`, drivers, adapters, scaffolding), plugin and service development (PluginContext, DI, kernel hooks like `kernel:ready`), and operations (CLI commands, migrations, deployment, test harnesses via LiteKernel). Use when the user is writing `objectstack.config.ts`, building a plugin or driver, wiring a framework adapter, running `os` CLI commands, or planning deployment. Do not use for data schema design (see objectstack-data) or query patterns (see objectstack-query); data lifecycle hooks (beforeInsert / afterUpdate) belong in objectstack-data — only kernel / service-level events live here.
Design the server-side API surface that an ObjectStack runtime exposes — REST/GraphQL endpoints, auth providers, realtime channels, error envelopes, batch/versioning contracts. Use when the user is adding `*.endpoint.ts`, configuring auth providers, defining custom routes, or extending the REST/GraphQL generator. Do not use for: consuming an ObjectStack API from a client (that is just standard HTTP — no skill needed); the auto-generated CRUD endpoints (those follow from objectstack-data); request-side query syntax (see objectstack-query). CEL expressions in route guards or auth predicates: load objectstack-formula alongside.
Design ObjectStack automation — Flows (visual logic), Triggers, Approvals, state machines, scheduled jobs, and webhooks. Use when the user is adding `*.flow.ts`, wiring an event-driven rule, or modelling an approval chain. Do not use for data lifecycle hooks at the object layer (see objectstack-data) or for kernel / plugin events (see objectstack-platform). CEL expressions in flow conditions / edge guards: load objectstack-formula alongside.
Design ObjectStack data schemas — objects, fields, field conditional rules, relationships, validations, indexes, lifecycle hooks, permissions, row-level security — and the seeds (`defineSeed()`) that load fixtures and reference data alongside them. Use when the user is creating or modifying `*.object.ts` / `*.seed.ts` files, picking field types, modelling relationships, writing `beforeInsert`/`afterUpdate` hooks, configuring per-object access control, or authoring bootstrap / demo data. Use for `visibleWhen` / `readonlyWhen` / `requiredWhen` rules that belong on fields. Do not use for querying data (see objectstack-query) or for plugin / kernel hooks (see objectstack-platform). CEL expressions in formulas / validations / sharing rules / dynamic seed values: load objectstack-formula alongside.
Internal process for dogfooding the ObjectStack platform — booting a real example app (showcase / CRM) and driving it in a browser as a real user or admin to find runtime bugs that static checks and unit tests miss, then fixing and shipping cleanly. Use whenever the task is "verify in the browser", "act as a real admin/user", "dogfood the Setup/Studio app", or browser-verify a change in the running app. NOT a customer-published skill — this is internal agent tooling (lives in .claude/, never in the published `skills/` dir).
Author ObjectStack UI metadata — Views (list/form/kanban/calendar/gantt), Apps (navigation), Pages (structured plus the HTML and React source-authoring tiers, ADR-0080/0081), Dashboards, Reports, Charts, Actions, and package Docs (`src/docs/*.md`). Use when the user is adding `*.view.ts` / `*.app.ts` / `*.dashboard.ts` / `*.action.ts` / `src/docs/*.md` files or designing a Studio-rendered UI surface, including dataset-bound dashboard/report widgets. Do not use for: data schema (see objectstack-data), interactive screen flows / wizards (those are `*.flow.ts` with `type: 'screen'` — see objectstack-automation), the React renderer implementation (lives in `packages/client-react`, not metadata), or Studio's own admin UI (that ships with the platform). CEL expressions in visibility/conditional rules: load objectstack-formula alongside.
Construct ObjectQL queries — filters, sorting, pagination, aggregation, relation expansion, and full-text search. Use when the user is writing a query DSL expression, picking pagination strategy, or designing a list view's filter spec. Do not use for defining objects / fields / relationships (see objectstack-data) or for designing the API endpoint that exposes a query (see objectstack-api).
Author ObjectStack translation bundles — object/field labels, view text, app navigation strings, automation messages — and configure locale fallback, coverage reporting, and the per-locale source layout. Use when the user is adding `*.translation.ts` files, wiring a new locale, or resolving missing-translation warnings. Do not use for general i18n library questions unrelated to ObjectStack bundles.