Ocp local testing

OCP Local Environment

ocp-local-env is a local dev server for testing an OCP app before deploying it. It builds and runs the app, watches for changes, and provides a browser UI to exercise every component.

Run

From the app root (the folder containing app.yml):

ocp dev

This auto-installs and updates the dev server, then launches it. It builds the app, opens http://localhost:3000, and rebuilds automatically as you edit the app's files.

Flag	Description
--port <n>	Run on a different port (default 3000)
--no-open	Don't automatically open the browser
--path <dir>	Use an app root other than the current folder
--config <file>	Path to a JSON config file that overrides defaults (see below)

Configuration

The --config file is a JSON file that overrides the dev server's defaults — include only the fields you want to change. The most useful:

• app.buildCommand — the build command (defaults to yarn build; set this if your app builds with npm, pnpm, or bun)
• app.watchPaths / app.ignorePaths — which files to watch for rebuilds, and which to exclude
• server.port — the port the server runs on

{
  "server": { "port": 4000 },
  "app": {
    "buildCommand": "npm run build",
    "watchPaths": ["src/**/*"],
    "ignorePaths": ["**/*.test.ts", "node_modules/**"]
  }
}

What you can test

The browser UI has a tab per component:

• App Settings — install the app, fill in and save its settings form, and uninstall. (This is the default tab, an embedded OCP directory UI.)
• Functions — send a test payload to a webhook/HTTP function and see the response and logs.
• Jobs — start a job (optionally with parameters) and watch its execution states and logs.
• Destinations — run a destination's readiness check, generate a sample batch, and deliver it to a data sync destination.
• Sources — view a source's schema; records the source emits appear in the Emitted Source Data tab below.
• Opal Tools — invoke an Opal tool, generate mock parameters, and check tool readiness.
• ODP Schema — view the custom ODP schema your app defines.
• Tool Settings — set an ODP API key so the app's ODP calls (customers, events, objects, GraphQL, lists) run against a real account.

A panel along the bottom has its own tabs:

• Console — streaming logs, filterable by origin (your app vs. the dev-server engine), level (pick debug, info, warn, or error to show that level and above), and category (function, lifecycle, jobs, notifications, destination, build, settings, secrets, etc.), with a clear button.
• Notifications — notifications the app raises (notifications.info/success/warn/error).
• Settings — inspect and edit the installation's settings store.
• Secrets — view, add, edit, and delete entries in the installation's secrets store.
• KV Store — view, add, edit, and delete entries in the per-installation key-value store.
• Shared KV — view, add, edit, and delete entries in the app-wide store shared across installations.
• Emitted Source Data — records emitted by data sync sources, with a running count.
• Environment — shows each APP_ENV_* variable the app declares: its value, which file it was loaded from (.env or .env.local in the app root), and whether it is still missing. Values can be toggled hidden/visible.