powersync-ja · stevensJourney · Mar 3, 2026 · Feb 2, 2026 · Feb 3, 2026 · Feb 3, 2026
diff --git a/.github/workflows/onPushToMain.yml b/.github/workflows/onPushToMain.yml
@@ -1,5 +1,9 @@
 name: release on push to main
 
+env:
+  # Increase heap to keep Nitro/Vite SSR builds (editor) from OOMing while treeshaking.
+  NODE_OPTIONS: --max-old-space-size=4096
+
 on:
   push:
     branches: [main]

diff --git a/.github/workflows/onRelease.yml b/.github/workflows/onRelease.yml
@@ -1,5 +1,9 @@
 name: publish on release
 
+env:
+  # Increase heap to keep Nitro/Vite SSR builds (editor) from OOMing while treeshaking.
+  NODE_OPTIONS: --max-old-space-size=4096
+
 on:
   release:
     types: [released]

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -1,5 +1,9 @@
 name: tests
 
+env:
+  # Increase heap to keep Nitro/Vite SSR builds (editor) from OOMing while treeshaking.
+  NODE_OPTIONS: --max-old-space-size=4096
+
 on:
   push:
     branches-ignore: [main]
@@ -23,4 +27,5 @@ jobs:
       - name: Check formatting
         run: pnpm exec prettier --check .
       - run: pnpm run build
-      - run: pnpm run test
+      - name: Run tests
+        run: pnpm run test
diff --git a/.husky/pre-commit b/.husky/pre-commit
@@ -8,10 +8,7 @@ fi
 git diff --cached --name-only -z --diff-filter=ACMR \
 	| xargs -0 pnpm prettier --write --ignore-unknown
 
-if git diff --cached --name-only --diff-filter=ACMR -- '*.js' '*.cjs' '*.mjs' '*.ts' '*.tsx' | grep -q .; then
-	git diff --cached --name-only -z --diff-filter=ACMR -- '*.js' '*.cjs' '*.mjs' '*.ts' '*.tsx' \
-		| xargs -0 pnpm eslint --fix
-fi
+pnpm lint:fix
 
 git diff --cached --name-only -z --diff-filter=ACMR \
 	| xargs -0 git add --
diff --git a/.prettierignore b/.prettierignore
@@ -1,3 +1,6 @@
 pnpm-lock.yaml
 **/pnpm-lock.yaml
 **/*.json
+.output
+editor-dist
+routeTree.gen.ts
diff --git a/.vscode/settings.json b/.vscode/settings.json
@@ -0,0 +1,11 @@
+{
+  "files.watcherExclude": {
+    "**/routeTree.gen.ts": true
+  },
+  "search.exclude": {
+    "**/routeTree.gen.ts": true
+  },
+  "files.readonlyInclude": {
+    "**/routeTree.gen.ts": true
+  }
+}
diff --git a/README.md b/README.md
@@ -2,6 +2,8 @@
 
 Monorepo for the PowerSync CLI and related tooling. Built with [pnpm](https://pnpm.io) workspaces and [OCLIF](https://oclif.io).
 
+- Architecture, scripts, and troubleshooting tips live in [packages/editor/README.md](./packages/editor/README.md).
+
 ## Requirements
 
 - **Node**: LTS v24+ (see [.nvmrc](./.nvmrc); use `nvm use` to switch)
@@ -11,19 +13,23 @@ Monorepo for the PowerSync CLI and related tooling. Built with [pnpm](https://pn
 
 The workspace is split into the main CLI, shared **packages**, and optional **plugins**:
 
-| Package                                              | Path                 | Description                                                                        |
-| ---------------------------------------------------- | -------------------- | ---------------------------------------------------------------------------------- |
-| [**@powersync/cli**](./cli)                          | `cli/`               | Main CLI — manage instances, config, sync config, cloud and self-hosted            |
-| [**@powersync/cli-core**](./packages/cli-core)       | `packages/cli-core/` | Core types and base commands shared by the CLI and plugins                         |
-| [**@powersync/cli-schemas**](./packages/schemas)     | `packages/schemas/`  | Shared config schemas (cli.yaml, service.yaml, etc.)                               |
-| [**@powersync/cli-plugin-docker**](./plugins/docker) | `plugins/docker/`    | Docker plugin — self-hosted PowerSync with Compose (configure, reset, start, stop) |
+| Package                                                        | Path                   | Description                                                                                         |
+| -------------------------------------------------------------- | ---------------------- | --------------------------------------------------------------------------------------------------- |
+| [**@powersync/cli**](./cli)                                    | `cli/`                 | Main CLI — manage instances, config, sync config, cloud and self-hosted                             |
+| [**PowerSync CLI Config Studio**](./packages/editor)           | `packages/editor/`     | Monaco-based UI that edits `service.yaml`/`sync-config.yaml` and ships with the config-edit plugin  |
+| [**@powersync/cli-core**](./packages/cli-core)                 | `packages/cli-core/`   | Core types and base commands shared by the CLI and plugins                                          |
+| [**@powersync/cli-schemas**](./packages/schemas)               | `packages/schemas/`    | Shared config schemas (cli.yaml, service.yaml, etc.)                                                |
+| [**@powersync/cli-plugin-config-edit**](./plugins/config-edit) | `plugins/config-edit/` | CLI plugin that sets `POWERSYNC_PROJECT_CONTEXT` and serves the Config Studio with the Nitro server |
+| [**@powersync/cli-plugin-docker**](./plugins/docker)           | `plugins/docker/`      | Docker plugin — self-hosted PowerSync with Compose (configure, reset, start, stop)                  |
 
 ```
 ├── cli/                    # @powersync/cli — main CLI (commands, cloud/self-hosted, templates)
 ├── packages/
 │   ├── cli-core/           # @powersync/cli-core — base commands & YAML utils (used by CLI + plugins)
+│   ├── editor/             # CLI Config Studio — Monaco web app that edits service.yaml/sync-config.yaml
 │   └── schemas/            # @powersync/cli-schemas — config validation (LinkConfig, CLIConfig)
 ├── plugins/
+│   ├── config-edit/        # @powersync/cli-plugin-config-edit — serves the Config Studio preview
 │   └── docker/             # @powersync/cli-plugin-docker — docker configure, reset, start, stop
 ├── examples/               # Sample projects initialized with the CLI (see examples/README.md)
 │   ├── cloud/
@@ -33,17 +39,19 @@ The workspace is split into the main CLI, shared **packages**, and optional **pl
     └── usage-docker.md     # Docker plugin (configure, reset, start, stop, templates)
 ```
 
-- **cli** depends on **cli-core**, **cli-schemas**, and **@powersync/cli-plugin-docker**. It loads the docker plugin and re-exports base command types from cli-core.
-- **plugin-docker** (in **plugins/docker**) depends on **cli-core** and **cli-schemas**. No dependency on the CLI package.
+- **cli** depends on **cli-core**, **cli-schemas**, **@powersync/cli-plugin-config-edit**, and **@powersync/cli-plugin-docker**. It loads the bundled plugins and re-exports base command types from cli-core.
 - **cli-core** depends on **schemas**. It provides `SelfHostedInstanceCommand`, YAML helpers (`!env`), and shared types for plugins.
+- **packages/editor** builds the Config Studio assets consumed by the config-edit plugin and embeds schemas from `@powersync/cli-schemas`.
+- **@powersync/cli-plugin-config-edit** depends on **cli-core** and serves the built editor from `plugins/config-edit/editor-dist` using the Nitro server.
+- **@powersync/cli-plugin-docker** depends on **cli-core** and **cli-schemas**. No dependency on the CLI package.
 
 Workspace roots are listed in [pnpm-workspace.yaml](./pnpm-workspace.yaml): `cli`, `packages/*`, `plugins/*`.
 
 ## OCLIF plugins
 
-We rely on standard [OCLIF plugin loading](https://oclif.io/docs/plugins/) so plugins can register new commands or hook into command execution. The main CLI ships with a Docker plugin under [plugins/docker](./plugins/docker), and any other OCLIF-compatible plugin can be installed the same way.
+We rely on standard [OCLIF plugin loading](https://oclif.io/docs/plugins/) so plugins can register new commands or hook into command execution. The main CLI ships with Docker and Config Studio plugins under [plugins/docker](./plugins/docker) and [plugins/config-edit](./plugins/config-edit), and any other OCLIF-compatible plugin can be installed the same way.
 
-For PowerSync-specific plugins, the optional [@powersync/cli-core](./packages/cli-core) package exposes base command helpers and shared types. The Docker plugin consumes these helpers and adds Docker-focused commands as a reference implementation.
+For PowerSync-specific plugins, the optional [@powersync/cli-core](./packages/cli-core) package exposes base command helpers and shared types. The bundled plugins consume these helpers and serve as reference implementations.
 
 Users can manage their own installed plugins dynamically at runtime. Run `powersync plugins --help` for install, uninstall, and inspection options.
 
@@ -72,6 +80,21 @@ powersync docker start
 
 See [plugins/docker](./plugins/docker/README.md) and [docs/usage-docker.md](./docs/usage-docker.md) for details.
 
+### Configuration editor
+
+Open the Monaco-based Config Studio that edits `service.yaml`/`sync-config.yaml` directly inside your project:
+
+```bash
+pnpm build                                  # ensures packages/editor copies its dist to plugins/config-edit/editor-dist
+powersync edit config --directory ./powersync --port 3000
+```
+
+- The command above is provided by **@powersync/cli-plugin-config-edit** and automatically sets `POWERSYNC_PROJECT_CONTEXT` (based on the linked project) before serving the built editor through the Nitro server.
+- Features include YAML schema validation, Monaco-powered completions, unsaved-change tracking, reset/save controls, and an error panel for schema violations.
+- For local UI work (without running the CLI command) export `POWERSYNC_PROJECT_CONTEXT` JSON that points at your project (the CLI sets this for you) and start the dev server: `POWERSYNC_PROJECT_CONTEXT='{"linkedProject":{"projectDirectory":"/path/to/project","linked":{"type":"self-hosted"}}}' pnpm --filter editor dev`.
+- Prefer the default host (127.0.0.1); only pass `--host 0.0.0.0` when you explicitly intend to expose the editor on your network.
+- Architecture, scripts, and troubleshooting tips live in [packages/editor/README.md](./packages/editor/README.md).
+
 ## Examples
 
 The [**examples/**](./examples) folder contains basic projects initialized with the CLI. See [examples/README.md](./examples/README.md) for the full list and links to each example's README.

diff --git a/cli/README.md b/cli/README.md
@@ -264,6 +264,7 @@ See [docs/usage.md](../docs/usage.md) for full usage and resolution order (flags
 - [`powersync docker reset`](#powersync-docker-reset)
 - [`powersync docker start`](#powersync-docker-start)
 - [`powersync docker stop`](#powersync-docker-stop)
+- [`powersync edit config`](#powersync-edit-config)
 - [`powersync fetch config`](#powersync-fetch-config)
 - [`powersync fetch instances`](#powersync-fetch-instances)
 - [`powersync fetch status`](#powersync-fetch-status)
@@ -632,6 +633,46 @@ EXAMPLES
   $ powersync docker stop --project-name=powersync_myapp --remove
 ```
 
+## `powersync edit config`
+
+Open the PowerSync configuration editor (Nitro server).
+
+```
+USAGE
+  $ powersync edit config [--api-url <value> | --instance-id <value> | --org-id <value> | --project-id <value>]
+    [--directory <value>] [--host <value>] [--port <value>]
+
+FLAGS
+  --host=<value>  [default: 127.0.0.1] Host to bind the editor preview server. Pass 0.0.0.0 to expose on all interfaces.
+  --port=<value>  [default: 3000] Port for the editor preview server.
+
+SELF_HOSTED_PROJECT FLAGS
+  --api-url=<value>  [Self-hosted] PowerSync API URL. When set, context is treated as self-hosted (exclusive with
+                     --instance-id). Resolved: flag → cli.yaml → API_URL.
+
+PROJECT FLAGS
+  --directory=<value>  [default: powersync] Directory containing PowerSync config. Defaults to "powersync". This is
+                       required if multiple powersync config files are present in subdirectories of the current working
+                       directory.
+
+CLOUD_PROJECT FLAGS
+  --instance-id=<value>  [Cloud] PowerSync Cloud instance ID (BSON ObjectID). When set, context is treated as cloud
+                         (exclusive with --api-url). Resolved: flag → cli.yaml → INSTANCE_ID.
+  --org-id=<value>       [Cloud] Organization ID (optional). Defaults to the token’s single org when only one is
+                         available; pass explicitly if the token has multiple orgs. Resolved: flag → cli.yaml → ORG_ID.
+  --project-id=<value>   [Cloud] Project ID. Resolved: flag → cli.yaml → PROJECT_ID.
+
+DESCRIPTION
+  Open the PowerSync configuration editor (Nitro server).
+
+  Loads the linked project context and runs the editor Nitro server to edit config files.
+
+EXAMPLES
+  $ powersync edit config
+
+  $ powersync edit config --directory ./powersync
+```
+
 ## `powersync fetch config`
 
 [Cloud only] Print linked Cloud instance config (YAML or JSON).
@@ -748,13 +789,12 @@ Generate client schema file from instance schema and sync config.
 
 ```
 USAGE
-  $ powersync generate schema --output dart|dotNet|flutterFlow|js|jsLegacy|kotlin|swift|ts --output-path <value>
-    [--api-url <value> | --instance-id <value> | --org-id <value> | --project-id <value>] [--directory <value>]
+  $ powersync generate schema --output dart|dotNet|js|jsLegacy|kotlin|swift|ts --output-path <value> [--api-url
+    <value> | --instance-id <value> | --org-id <value> | --project-id <value>] [--directory <value>]
 
 FLAGS
-  --output=<option>      (required) [default: type] Output type: dart, dotNet, flutterFlow, js, jsLegacy, kotlin, swift,
-                         ts
-                         <options: dart|dotNet|flutterFlow|js|jsLegacy|kotlin|swift|ts>
+  --output=<option>      (required) [default: type] Output type: dart, dotNet, js, jsLegacy, kotlin, swift, ts
+                         <options: dart|dotNet|js|jsLegacy|kotlin|swift|ts>
   --output-path=<value>  (required) Path to output the schema file.
 
 SELF_HOSTED_PROJECT FLAGS

diff --git a/cli/eslint.config.mjs b/cli/eslint.config.mjs
@@ -0,0 +1,3 @@
+import rootConfig from '../eslint.config.mjs';
+
+export default [...rootConfig];
diff --git a/cli/package.json b/cli/package.json
@@ -15,14 +15,16 @@
     "@oclif/plugin-commands": "^4.1.40",
     "@oclif/plugin-help": "^6",
     "@oclif/plugin-plugins": "^5",
-    "@powersync-community/sync-config-rewriter": "^0.1.1",
+    "@powersync-community/sync-config-rewriter": "^0.1.2",
     "@powersync/cli-core": "workspace:*",
+    "@powersync/cli-plugin-config-edit": "workspace:*",
     "@powersync/cli-plugin-docker": "workspace:*",
     "@powersync/cli-schemas": "workspace:*",
-    "@powersync/management-client": "0.0.1",
-    "@powersync/management-types": "0.0.1",
-    "@powersync/service-sync-rules": "^0.30.0",
-    "@powersync/service-types": "0.0.0-dev-20260225093637",
+    "@powersync/management-client": "^0.0.4",
+    "@powersync/management-types": "^0.0.3",
+    "@powersync/service-sync-rules": "^0.32.0",
+    "@powersync/service-types": "^0.15.0",
+    "bson": "^7.2.0",
     "fastify": "^5.0.0",
     "jose": "^6.1.3",
     "lodash": "^4.17.23",
@@ -74,6 +76,7 @@
       "@oclif/plugin-help",
       "@oclif/plugin-plugins",
       "@powersync/cli-plugin-docker",
+      "@powersync/cli-plugin-config-edit",
       "@oclif/plugin-autocomplete",
       "@oclif/plugin-commands"
     ],
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,3 @@
		import rootConfig from '../eslint.config.mjs';

		export default [...rootConfig];