diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
new file mode 100644
index 0000000..da95507
--- /dev/null
+++ b/.github/workflows/deploy.yml
@@ -0,0 +1,37 @@
+name: Test, build, deploy 
+
+on:
+  push:
+    branches:
+      - main  # Set a branch to deploy
+  pull_request:
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v3
+        with:
+           fetch-depth: 0
+
+      - uses: denoland/setup-deno@v1
+        with:
+          deno-version: v1.x
+
+      - uses: szenius/set-timezone@v1.0
+        with:
+          timezoneLinux: "Europe/Prague"
+
+      - name: Build sources
+        run: make
+
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        if: ${{ github.ref == 'refs/heads/main' }}
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./dist
\ No newline at end of file
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..ad539a0
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,14 @@
+.PHONY: all
+
+all: test build
+
+test:
+	deno test --allow-read utils/test.js 
+
+build:
+	deno run --allow-read --allow-write utils/build.js
+
+format:
+	deno fmt
+
+fmt: format
\ No newline at end of file
diff --git a/data/clients/bluesky/index.yaml b/data/clients/bluesky/index.yaml
index b48a9e9..f67b0d5 100644
--- a/data/clients/bluesky/index.yaml
+++ b/data/clients/bluesky/index.yaml
@@ -1 +1,3 @@
-name: Bluesky
\ No newline at end of file
+name: Bluesky
+links:
+  web: https://blueskyweb.xyz/
\ No newline at end of file
diff --git a/data/federations/bluesky-sandbox/index.yaml b/data/federations/bluesky-sandbox/index.yaml
new file mode 100644
index 0000000..c3dd1bc
--- /dev/null
+++ b/data/federations/bluesky-sandbox/index.yaml
@@ -0,0 +1 @@
+name: Bluesky Sandbox
\ No newline at end of file
diff --git a/data/federations/bluesky/index.yaml b/data/federations/bluesky/index.yaml
new file mode 100644
index 0000000..b48a9e9
--- /dev/null
+++ b/data/federations/bluesky/index.yaml
@@ -0,0 +1 @@
+name: Bluesky
\ No newline at end of file
diff --git a/dist/index.json b/dist/index.json
new file mode 100644
index 0000000..bbe3e39
--- /dev/null
+++ b/dist/index.json
@@ -0,0 +1,31 @@
+{
+  "data": {
+    "bots": [],
+    "bridges": [],
+    "clients": [
+      {
+        "id": "klearsky",
+        "name": "Klearsky"
+      },
+      {
+        "id": "bluesky",
+        "name": "Bluesky",
+        "links": {
+          "web": "https://blueskyweb.xyz/"
+        }
+      }
+    ],
+    "federations": [
+      {
+        "id": "bluesky-sandbox",
+        "name": "Bluesky Sandbox"
+      },
+      {
+        "id": "bluesky",
+        "name": "Bluesky"
+      }
+    ],
+    "plc-directories": []
+  },
+  "time": "2023-06-28T06:08:14.709Z"
+}
\ No newline at end of file
diff --git a/schema/client.yaml b/schema/client.yaml
new file mode 100644
index 0000000..a34dc81
--- /dev/null
+++ b/schema/client.yaml
@@ -0,0 +1,10 @@
+type: object
+additionalProperties: false
+properties:
+  id:
+    type: string
+    pattern: '^[a-z0-9-]+$'
+  name:
+    type: string
+  links:
+    type: object
diff --git a/utils/build.js b/utils/build.js
new file mode 100644
index 0000000..05e5b76
--- /dev/null
+++ b/utils/build.js
@@ -0,0 +1,6 @@
+import { Engine } from "./engine.js";
+
+const engine = new Engine();
+await engine.load();
+
+await engine.build();
diff --git a/utils/engine.js b/utils/engine.js
new file mode 100644
index 0000000..b093e29
--- /dev/null
+++ b/utils/engine.js
@@ -0,0 +1,60 @@
+import { parse } from "https://deno.land/std@0.192.0/yaml/mod.ts";
+import { join } from "https://deno.land/std@0.192.0/path/mod.ts";
+import { ensureDir } from "https://deno.land/std@0.192.0/fs/ensure_dir.ts";
+
+const DATA_PATH = "./data";
+const SCHEMA_PATH = "./schema";
+const SCHEMA_MAP = {
+  clients: "client",
+};
+
+async function loadYAML(fn) {
+  return parse(await Deno.readTextFile(fn));
+}
+async function saveJSON(fn, data) {
+  return Deno.writeTextFile(fn, JSON.stringify(data, null, 2));
+}
+
+export class Engine {
+  constructor() {
+    this.data = {};
+    this.schemasData = {};
+    this.schemaMap = SCHEMA_MAP;
+  }
+
+  async load() {
+    for await (const cat of Deno.readDir(DATA_PATH)) {
+      this.data[cat.name] = [];
+      for await (const pkg of Deno.readDir(join(DATA_PATH, cat.name))) {
+        const base = await loadYAML(
+          join(DATA_PATH, cat.name, pkg.name, "index.yaml"),
+        );
+        this.data[cat.name].push(Object.assign({ id: pkg.name }, base));
+      }
+    }
+    console.log("Engine loaded");
+  }
+
+  async build(path = "./dist") {
+    await ensureDir(path);
+
+    // write index
+    const fn = join(path, "index.json");
+    await saveJSON(fn, {
+      data: this.data,
+      time: new Date(),
+    });
+    console.log(`Build done: ${fn}`);
+  }
+
+  async schemas() {
+    if (Object.keys(this.schemasData).length === 0) {
+      for await (const sf of Deno.readDir(SCHEMA_PATH)) {
+        const name = sf.name.match(/^(\w+)\./)[1];
+        const schema = await loadYAML(join(SCHEMA_PATH, sf.name));
+        this.schemasData[name] = schema;
+      }
+    }
+    return this.schemasData;
+  }
+}
diff --git a/utils/test.js b/utils/test.js
new file mode 100644
index 0000000..2b152d6
--- /dev/null
+++ b/utils/test.js
@@ -0,0 +1,24 @@
+import Ajv from "npm:ajv@8.8.2";
+import addFormats from "npm:ajv-formats@2.1.1";
+import { Engine } from "./engine.js";
+
+const ajv = new Ajv({ strict: false });
+addFormats(ajv);
+
+const engine = new Engine();
+await engine.load();
+
+const schemas = await engine.schemas();
+
+for (const col of Object.keys(engine.schemaMap)) {
+  const schemaName = engine.schemaMap[col];
+  for (const item of engine.data[col]) {
+    const validator = ajv.compile(schemas[schemaName]);
+
+    Deno.test(`${schemaName} (schema): ${item.id}`, () => {
+      if (!validator(item)) {
+        throw validator.errors;
+      }
+    });
+  }
+}