diff --git a/.github/brand/social.png b/.github/brand/social.png
new file mode 100644
index 0000000..57ad2ff
Binary files /dev/null and b/.github/brand/social.png differ
diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index c22aec0..62f6618 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -21,6 +21,7 @@ jobs:
           python-version: '3.13'
       - name: Validate exporter and declaration package
         run: |
+          python3 Scripts/check-brand.py
           /usr/bin/swift --version
           /usr/bin/swift package resolve
           git diff --exit-code -- Package.resolved
diff --git a/AGENTS.md b/AGENTS.md
index c1256b1..2a8ef2e 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -147,3 +147,11 @@ source of truth instead of a literal value.
 ## Repository Guardrails
 
 Read Package.swift and computer-mcp-plugin.toml before editing. Keep the exporter separate from the vendor formatter. Generate cli-tree.json from verified native input; preserve upstream notices and never hand-edit generated output. Run swift build, swift test and swift-format lint before handoff. Do not install vendor binaries or change global PATH.
+
+## Brand delivery
+
+The main Computer MCP repository owns ProductIdentity and BRAND. Imported
+`Documentation/Brand/header.svg` travels with the packaged manual;
+`.github/brand/social.png` supplies the repository preview. `brand.lock.json`
+binds both to canonical exports. Run `python3 Scripts/check-brand.py` locally
+and in CI. Update imports with the main repository's `Scripts/brand.py sync`.
diff --git a/Documentation/Brand/header.svg b/Documentation/Brand/header.svg
new file mode 100644
index 0000000..bd12f8d
--- /dev/null
+++ b/Documentation/Brand/header.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="1280" height="640" viewBox="0 0 1280 640">
+  <title>Computer MCP — Swift Format</title>
+  <rect width="1280" height="640" fill="#171819"/>
+  <g transform="translate(68 51) scale(.38)"><rect x="51" y="53" width="154" height="114" rx="20" fill="none" stroke="#f5f5f7" stroke-width="14"/>
+  <circle cx="128" cy="197" r="9" fill="#f5f5f7"/></g>
+  <g font-family="Helvetica Neue, Helvetica, Arial, sans-serif" fill="#f5f5f7">
+    <text x="184" y="119" font-size="26" fill="#acafb5">First-party plugin</text>
+    <text x="80" y="315" font-size="80" font-weight="600" letter-spacing="-1.5">Computer MCP</text>
+    <text x="80" y="402" font-size="48" font-weight="500">Swift Format</text>
+    <path d="M80 490H1200" stroke="#3b3d41"/>
+    <text x="80" y="554" font-size="22" fill="#acafb5">Verified Swift formatting and linting</text>
+  </g>
+</svg>
diff --git a/README.md b/README.md
index 26a8493..429e89b 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,9 @@
-# Swift Format Plugin
+![Computer MCP — Swift Format](Documentation/Brand/header.svg)
+
+# Computer MCP — Swift Format
+
+Part of the [Computer MCP](https://computer-mcp.github.io/) family.
+**Let ChatGPT use your local tools.**
 
 A Computer MCP plugin for the Swift Format supplied with Swift 6.3.1. It exposes
 formatting, linting, configuration output, and help through the Gateway's typed
diff --git a/Scripts/check-brand.py b/Scripts/check-brand.py
new file mode 100644
index 0000000..1cb6c74
--- /dev/null
+++ b/Scripts/check-brand.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+"""Verify a repository's locked Computer MCP brand delivery without a source checkout."""
+
+import hashlib
+import json
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+LOCK = ROOT / "brand.lock.json"
+if not LOCK.exists():
+    LOCK = ROOT / "public/brand/brand.lock.json"
+record = json.loads(LOCK.read_text())
+assert record["schema_version"] == 1, "Unsupported brand lock"
+assert record["source"] == "https://github.com/computer-mcp/computer-mcp", "Unexpected brand authority"
+for name, expected in record["files"].items():
+    path = ROOT / name
+    assert path.resolve().is_relative_to(ROOT), f"Invalid delivery path: {name}"
+    assert hashlib.sha256(path.read_bytes()).hexdigest() == expected, f"Brand delivery drift: {name}"
+if record["consumer"] == "computer-mcp.github.io":
+    text = (ROOT / "index.html").read_text()
+    for promise in record["promise"].values():
+        assert promise in text, "Website promise differs from the imported brand"
+    assert 'brand/social-en.png' in text, "Website sharing artwork differs"
+else:
+    manual = ROOT / ("profile/README.md" if record["consumer"] == ".github" else "README.md")
+    text = manual.read_text()
+    assert record["name"] in text, "Master name missing from public entry point"
+    assert record["promise"]["en"] in text, "Master promise missing from public entry point"
+    header = "brand/header.svg" if record["consumer"] == ".github" else "Documentation/Brand/header.svg"
+    assert header in text, "Family header missing from public entry point"
+print(f"Locked Computer MCP brand verified for {record['consumer']}")
diff --git a/brand.lock.json b/brand.lock.json
new file mode 100644
index 0000000..3ad9639
--- /dev/null
+++ b/brand.lock.json
@@ -0,0 +1,16 @@
+{
+  "schema_version": 1,
+  "source": "https://github.com/computer-mcp/computer-mcp",
+  "revision": "3c498108b1b847ae126fd2593cd0d3ddb4d0d9858d0dae214b1439ff69226e50",
+  "consumer": "plugin-swift-format",
+  "name": "Computer MCP",
+  "promise": {
+    "en": "Let ChatGPT use your local tools.",
+    "zh-CN": "\u8ba9 ChatGPT\uff0c\u7528\u4e0a\u4f60\u7684\u672c\u673a\u5de5\u5177\u3002"
+  },
+  "files": {
+    "Documentation/Brand/header.svg": "f9685cf010a4d26c959e03dc0d13782700eaf0930bc8967ba3df8e4866c57ca0",
+    ".github/brand/social.png": "218af71a6d56373f7bfe84ec0c401f9f0914a510bd23241643879be55c088dc9",
+    "Scripts/check-brand.py": "2ec3c64469774b48fbfa6fbfa7f6a35c6a172fe4de347beb1881766632fbfdde"
+  }
+}