# Emdash Cms

> AI coding agent skill for building with EmDash, the full-stack TypeScript CMS built on Astro and Cloudflare

- Skill: `aradotso-trending-skills/emdash-cms` (Agent Skill)
- Install (CLI): `npx skillmds@latest add aradotso-trending-skills/emdash-cms`
- Raw SKILL.md: https://api.skillmd.com/api/skills/aradotso-trending-skills/emdash-cms/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Web & Frontend
- Author: aradotso (https://skillmd.com/u/aradotso-trending-skills)
- Updated: 2026-09-10
- Page: https://skillmd.com/skills/aradotso-trending-skills/emdash-cms

---


# EmDash CMS

> Skill by [ara.so](https://ara.so) — Daily 2026 Skills collection.

EmDash is a full-stack TypeScript CMS built on Astro and Cloudflare. It is the spiritual successor to WordPress: extensible, developer-friendly, and powered by a plugin system that runs plugins in sandboxed Worker isolates rather than with full filesystem/database access. EmDash stores rich text as Portable Text (structured JSON) rather than HTML, supports passkey-first auth, and runs on Cloudflare (D1 + R2 + Workers) or any Node.js server with SQLite.

---

## Installation

### Scaffold a new project

```bash
npm create emdash@latest
```

Follow the prompts to choose a template (blog, marketing, portfolio, starter, blank) and a platform (Cloudflare or Node.js/SQLite).

### Deploy to Cloudflare directly

Use the one-click deploy button from the README, or:

```bash
npm create emdash@latest -- --template blog-cloudflare
cd my-site
npm run deploy
```

### Add EmDash to an existing Astro project

```bash
npm install emdash
```

```typescript
// astro.config.mjs
import { defineConfig } from "astro/config";
import emdash from "emdash/astro";
import { d1 } from "emdash/db";

export default defineConfig({
  integrations: [
    emdash({
      database: d1(), // Cloudflare D1
    }),
  ],
});
```

For Node.js + SQLite (no Cloudflare account needed):

```typescript
// astro.config.mjs
import { defineConfig } from "astro/config";
import emdash from "emdash/astro";
import { sqlite } from "emdash/db";

export default defineConfig({
  integrations: [
    emdash({
      database: sqlite({ path: "./content.db" }),
    }),
  ],
});
```

---

## Key CLI Commands

```bash
# Scaffold a new EmDash project
npm create emdash@latest

# Generate TypeScript types from your live schema
npx emdash types

# Seed the demo site with sample content
npx emdash seed

# Run database migrations
npx emdash migrate

# Start the dev server (standard Astro command)
npx astro dev

# Build for production
npx astro build

# Open admin panel (after dev server starts)
open http://localhost:4321/_emdash/admin
```

### Monorepo / contributor commands

```bash
pnpm install
pnpm build
pnpm test          # run all tests
pnpm typecheck     # TypeScript check
pnpm lint:quick    # fast lint (< 1s)
pnpm format        # format with oxfmt

# Run the demo (Node.js + SQLite, no Cloudflare needed)
pnpm --filter emdash-demo seed
pnpm --filter emdash-demo dev
```

---

## Configuration

### Cloudflare (D1 + R2 + KV + Worker Loaders)

```jsonc
// wrangler.jsonc
{
  "name": "my-emdash-site",
  "compatibility_date": "2025-01-01",
  "d1_databases": [
    {
      "binding": "DB",
      "database_name": "emdash-content",
      "database_id": "$DATABASE_ID"
    }
  ],
  "r2_buckets": [
    {
      "binding": "MEDIA",
      "bucket_name": "emdash-media"
    }
  ],
  "kv_namespaces": [
    {
      "binding": "SESSIONS",
      "id": "$KV_NAMESPACE_ID"
    }
  ],
  // Remove this block to disable sandboxed plugins (free accounts)
  "worker_loaders": [
    {
      "binding": "PLUGIN_LOADER"
    }
  ]
}
```

```typescript
// astro.config.mjs
import emdash from "emdash/astro";
import { d1 } from "emdash/db";
import { r2 } from "emdash/storage";
import { kv } from "emdash/sessions";

export default defineConfig({
  integrations: [
    emdash({
      database: d1({ binding: "DB" }),
      storage: r2({ binding: "MEDIA" }),
      sessions: kv({ binding: "SESSIONS" }),
    }),
  ],
});
```

### Node.js + SQLite

```typescript
// astro.config.mjs
import emdash from "emdash/astro";
import { sqlite } from "emdash/db";
import { localFiles } from "emdash/storage";

export default defineConfig({
  integrations: [
    emdash({
      database: sqlite({ path: "./content.db" }),
      storage: localFiles({ dir: "./public/uploads" }),
    }),
  ],
});
```

### PostgreSQL / Turso

```typescript
import { postgres } from "emdash/db";
import { turso } from "emdash/db";

// PostgreSQL
database: postgres({ url: process.env.DATABASE_URL })

// Turso/libSQL
database: turso({
  url: process.env.TURSO_DATABASE_URL,
  authToken: process.env.TURSO_AUTH_TOKEN,
})
```

---

## Querying Content

Content types are defined in the admin UI (no code required). After creating a collection, generate types:

```bash
npx emdash types
```

This writes type definitions to `src/emdash.d.ts`.

### Fetch a collection in an Astro page

```astro
---
// src/pages/blog/index.astro
import { getEmDashCollection } from "emdash";

const { entries: posts } = await getEmDashCollection("posts", {
  filter: { status: "published" },
  sort: { field: "publishedAt", direction: "desc" },
  limit: 10,
});
---

<ul>
  {posts.map((post) => (
    <li>
      <a href={`/blog/${post.data.slug}`}>{post.data.title}</a>
      <time datetime={post.data.publishedAt}>{post.data.publishedAt}</time>
    </li>
  ))}
</ul>
```

### Fetch a single entry

```astro
---
// src/pages/blog/[slug].astro
import { getEmDashEntry, renderPortableText } from "emdash";

const { slug } = Astro.params;
const post = await getEmDashEntry("posts", { slug });

if (!post) return Astro.redirect("/404");

const { Content } = await renderPortableText(post.data.body);
---

<article>
  <h1>{post.data.title}</h1>
  <Content />
</article>
```

### Pagination

```astro
---
import { getEmDashCollection } from "emdash";

const page = Number(Astro.params.page ?? 1);
const { entries: posts, total } = await getEmDashCollection("posts", {
  filter: { status: "published" },
  sort: { field: "publishedAt", direction: "desc" },
  limit: 10,
  offset: (page - 1) * 10,
});
---
```

### Filtering by taxonomy

```astro
---
import { getEmDashCollection } from "emdash";

const { entries: posts } = await getEmDashCollection("posts", {
  filter: {
    status: "published",
    tags: { contains: "typescript" },
  },
});
---
```

---

## Portable Text Rendering

EmDash stores rich text as [Portable Text](https://www.portabletext.org/) (structured JSON), not HTML.

```astro
---
import { renderPortableText } from "emdash";

const post = await getEmDashEntry("posts", { slug: Astro.params.slug });
const { Content } = await renderPortableText(post.data.body);
---

<Content />
```

### Custom block renderers

```typescript
// src/portable-text.ts
import { definePortableTextComponents } from "emdash/blocks";

export const components = definePortableTextComponents({
  types: {
    callout: ({ value }) => `
      <div class="callout callout--${value.type}">
        ${value.text}
      </div>
    `,
    image: ({ value }) => `
      <figure>
        <img src="${value.url}" alt="${value.alt ?? ""}" />
        ${value.caption ? `<figcaption>${value.caption}</figcaption>` : ""}
      </figure>
    `,
  },
  marks: {
    highlight: ({ children }) => `<mark>${children}</mark>`,
  },
});
```

```astro
---
import { renderPortableText } from "emdash";
import { components } from "../portable-text";

const { Content } = await renderPortableText(post.data.body, { components });
---
<Content />
```

---

## Plugin Development

Plugins are the primary extension mechanism. On Cloudflare, they run in sandboxed Worker isolates with a declared capability manifest. On Node.js, they run in-process (safe mode).

### Minimal plugin

```typescript
// plugins/my-plugin/index.ts
import { definePlugin } from "emdash/plugin";

export default () =>
  definePlugin({
    id: "my-plugin",
    name: "My Plugin",
    version: "1.0.0",
    capabilities: [],
    hooks: {},
  });
```

### Plugin with content hooks and email

```typescript
import { definePlugin } from "emdash/plugin";

export default () =>
  definePlugin({
    id: "notify-on-publish",
    name: "Notify on Publish",
    version: "1.0.0",
    capabilities: ["read:content", "email:send"],
    hooks: {
      "content:afterSave": async (event, ctx) => {
        if (event.content.status !== "published") return;

        await ctx.email.send({
          to: "editors@example.com",
          subject: `New post published: ${event.content.title}`,
          text: `"${event.content.title}" is now live.`,
        });
      },
    },
  });
```

### Plugin with KV storage and admin settings

```typescript
import { definePlugin } from "emdash/plugin";

export default () =>
  definePlugin({
    id: "view-counter",
    name: "View Counter",
    version: "1.0.0",
    capabilities: ["read:content", "kv:read", "kv:write"],

    settings: {
      schema: {
        resetDaily: { type: "boolean", default: false, label: "Reset counts daily" },
      },
    },

    hooks: {
      "content:beforeRender": async (event, ctx) => {
        const key = `views:${event.content.id}`;
        const current = Number(await ctx.kv.get(key) ?? 0);
        await ctx.kv.set(key, String(current + 1));
        event.content.meta.views = current + 1;
      },
    },

    adminPages: [
      {
        path: "/analytics",
        title: "View Analytics",
        component: "ViewAnalytics",
      },
    ],
  });
```

### Plugin with custom block type

```typescript
import { definePlugin } from "emdash/plugin";
import { defineBlock } from "emdash/blocks";

export default () =>
  definePlugin({
    id: "callout-block",
    name: "Callout Block",
    version: "1.0.0",
    capabilities: [],

    blocks: [
      defineBlock({
        name: "callout",
        title: "Callout",
        fields: [
          { name: "type", type: "select", options: ["info", "warning", "danger"], default: "info" },
          { name: "text", type: "text", label: "Message" },
        ],
      }),
    ],

    hooks: {},
  });
```

### Plugin with custom API route

```typescript
import { definePlugin } from "emdash/plugin";

export default () =>
  definePlugin({
    id: "newsletter",
    name: "Newsletter",
    version: "1.0.0",
    capabilities: ["kv:write"],

    apiRoutes: [
      {
        method: "POST",
        path: "/subscribe",
        handler: async (request, ctx) => {
          const { email } = await request.json();
          await ctx.kv.set(`subscriber:${email}`, "true");
          return new Response(JSON.stringify({ ok: true }), {
            headers: { "Content-Type": "application/json" },
          });
        },
      },
    ],

    hooks: {},
  });
```

### Available capabilities

| Capability | What it allows |
|---|---|
| `read:content` | Read published content |
| `write:content` | Create and update content |
| `read:users` | Read user profiles |
| `email:send` | Send email via configured provider |
| `kv:read` | Read from plugin's KV namespace |
| `kv:write` | Write to plugin's KV namespace |
| `http:fetch` | Make outbound HTTP requests |
| `storage:read` | Read from media storage |
| `storage:write` | Write to media storage |

### Available hooks

```typescript
// Content lifecycle
"content:beforeSave"
"content:afterSave"
"content:beforeDelete"
"content:afterDelete"
"content:beforeRender"

// Auth lifecycle
"auth:afterLogin"
"auth:afterLogout"
"auth:afterRegister"

// Media lifecycle
"media:beforeUpload"
"media:afterUpload"
"media:beforeDelete"

// Admin lifecycle
"admin:init"
```

---

## Authentication

EmDash uses passkey-first (WebAuthn) authentication with OAuth and magic link fallbacks.

### Configure OAuth providers

```typescript
// astro.config.mjs
import emdash from "emdash/astro";
import { github, google } from "emdash/auth";

export default defineConfig({
  integrations: [
    emdash({
      database: d1(),
      auth: {
        providers: [
          github({
            clientId: process.env.GITHUB_CLIENT_ID,
            clientSecret: process.env.GITHUB_CLIENT_SECRET,
          }),
          google({
            clientId: process.env.GOOGLE_CLIENT_ID,
            clientSecret: process.env.GOOGLE_CLIENT_SECRET,
          }),
        ],
      },
    }),
  ],
});
```

### Configure magic link email

```typescript
auth: {
  providers: [
    magicLink({
      from: "noreply@yourdomain.com",
      // uses the configured email adapter
    }),
  ],
}
```

### Protect a page

```astro
---
// src/pages/dashboard.astro
import { requireAuth } from "emdash/auth";

const user = await requireAuth(Astro);
// Redirects to /login if not authenticated
---

<p>Welcome, {user.name}!</p>
```

### Get the current user (optional)

```astro
---
import { getUser } from "emdash/auth";

const user = await getUser(Astro); // null if not logged in
---

{user ? <p>Hello {user.name}</p> : <a href="/login">Sign in</a>}
```

### Roles

```typescript
import { requireRole } from "emdash/auth";

// In an API route or page
const user = await requireRole(Astro, "editor");
// Roles: "administrator" | "editor" | "author" | "contributor"
```

---

## WordPress Migration

### Import from a WXR export file

```bash
npx emdash import:wordpress ./export.xml
```

### Import from the WordPress REST API

```bash
npx emdash import:wordpress --url https://yoursite.wordpress.com --api-key $WP_API_KEY
```

### Import from WordPress.com

```bash
npx emdash import:wordpress --wpcom --site yoursite.wordpress.com
```

The importer migrates posts, pages, media attachments, categories, tags, authors, and comments. Gutenberg blocks are converted to Portable Text via the `gutenberg-to-portable-text` package.

---

## Content Schema (Admin UI)

Content types are created in the admin panel at `/_emdash/admin` — not in code. After creating or modifying a collection, regenerate TypeScript types:

```bash
npx emdash types
# Writes to src/emdash.d.ts
```

### Field types available in the schema builder

- `text` — short string
- `richText` — Portable Text (TipTap editor)
- `number` — integer or float
- `boolean` — true/false toggle
- `date` / `datetime` — date pickers
- `select` — single-choice dropdown
- `multiSelect` — multi-choice
- `image` — media library picker
- `file` — file attachment
- `relation` — link to another collection entry
- `slug` — URL-safe string, auto-generated from a source field
- `json` — raw JSON

---

## MCP Server (AI Tool Integration)

EmDash includes a built-in MCP server so AI tools like Claude and ChatGPT can manage site content directly.

```typescript
// astro.config.mjs
import emdash from "emdash/astro";

export default defineConfig({
  integrations: [
    emdash({
      database: d1(),
      mcp: {
        enabled: true,
        // Restrict to specific roles
        allowedRoles: ["administrator", "editor"],
      },
    }),
  ],
});
```

The MCP server is available at `/_emdash/mcp`. Connect Claude Desktop by adding to `claude_desktop_config.json`:

```json
{
  "mcpServers": {
    "emdash": {
      "url": "https://yoursite.com/_emdash/mcp",
      "headers": {
        "Authorization": "Bearer $EMDASH_MCP_TOKEN"
      }
    }
  }
}
```

---

## Repository Structure

```
packages/
  core/           Astro integration, APIs, admin UI, CLI
  auth/           Authentication library
  blocks/         Portable Text block definitions
  cloudflare/     Cloudflare adapter (D1, R2, Worker Loader)
  plugins/        First-party plugins (forms, embeds, SEO, audit-log, etc.)
  create-emdash/  npm create emdash scaffolding
  gutenberg-to-portable-text/  WordPress block converter

templates/        blog, marketing, portfolio, starter, blank
demos/            Development example sites
docs/             Starlight documentation site
```

---

## First-Party Plugins

Install from the `emdash/plugins` package:

```typescript
import forms from "emdash/plugins/forms";
import seo from "emdash/plugins/seo";
import embeds from "emdash/plugins/embeds";
import auditLog from "emdash/plugins/audit-log";

export default defineConfig({
  integrations: [
    emdash({
      database: d1(),
      plugins: [forms(), seo(), embeds(), auditLog()],
    }),
  ],
});
```

---

## Troubleshooting

### "Dynamic Workers are not available on free accounts"

Sandboxed plugins require a paid Cloudflare account ($5/mo+). To disable sandboxed plugins and run them in-process instead, remove the `worker_loaders` block from `wrangler.jsonc`:

```jsonc
// wrangler.jsonc — remove this block on free accounts
// "worker_loaders": [{ "binding": "PLUGIN_LOADER" }]
```

### Admin panel returns 404

Ensure the Astro integration is registered in `astro.config.mjs` and the dev server has been restarted after installing EmDash.

### TypeScript errors after schema changes

Regenerate types after modifying collections in the admin UI:

```bash
npx emdash types
```

### D1 binding errors locally

Use `wrangler dev` instead of `astro dev` when developing with D1 bindings, or switch to SQLite for local development:

```typescript
database: process.env.CF_PAGES ? d1() : sqlite({ path: "./content.db" })
```

### Migrations not applied

```bash
npx emdash migrate
# For Cloudflare D1 remote:
npx wrangler d1 migrations apply emdash-content --remote
```

### Plugin hook not firing

Verify the plugin is listed in the `plugins` array in `astro.config.mjs` and that the capability required by the hook is declared in the plugin's `capabilities` array. Missing capabilities cause the sandbox to silently block the call.