diff --git a/.claude/commands/ccguide/daily.md b/.claude/commands/ccguide/daily.md
new file mode 100644
index 0000000..1c40fc9
--- /dev/null
+++ b/.claude/commands/ccguide/daily.md
@@ -0,0 +1,44 @@
+---
+description: Daily update check — official Anthropic docs diff + guide/CC releases digest
+---
+
+Run this sequence in order. Present results as one consolidated report.
+
+## Step 1 — Refresh official docs
+
+Call `refresh_official_docs` MCP tool to fetch the latest Anthropic docs and update the current snapshot.
+
+If it fails (no baseline), tell the user to run /ccguide:init-docs once first, then stop.
+
+## Step 2 — Diff official docs
+
+Call `diff_official_docs` MCP tool to compare baseline vs refreshed current.
+
+## Step 3 — Guide + CC releases digest
+
+Call `get_digest` MCP tool with period: "day"
+
+---
+
+## Output format
+
+Present everything as a single daily briefing:
+
+```
+# Daily Claude Code Update — {today's date}
+
+## Official Anthropic Docs
+{diff results — added/removed/modified sections, or "No changes"}
+
+## Guide + CC CLI
+{digest results — guide CHANGELOG entries + CC releases from last 24h, or "No changes"}
+
+---
+Docs snapshot: {baseline date} → {current date}
+```
+
+Rules:
+- If no changes anywhere: say so clearly in one line, no padding
+- Reproduce ALL URLs verbatim (source URLs, GitHub links)
+- If official docs unchanged AND no guide/CC updates: "Nothing changed in the last 24h."
+- Keep it dense — this is a daily briefing, not a report
diff --git a/.claude/commands/ccguide/diff-docs.md b/.claude/commands/ccguide/diff-docs.md
new file mode 100644
index 0000000..e91a19a
--- /dev/null
+++ b/.claude/commands/ccguide/diff-docs.md
@@ -0,0 +1,17 @@
+---
+description: Compare official Anthropic docs baseline vs current snapshot (no network — instant)
+---
+
+Use the `diff_official_docs` MCP tool.
+
+No network call — reads local index files only (~50KB each). Instant.
+
+Present the results clearly:
+- Added sections (new pages in the official docs)
+- Removed sections
+- Modified sections with line delta and first changed line
+- Unchanged count
+
+If no baseline exists, tell the user to run /ccguide:init-docs first.
+If no current snapshot exists, tell the user to run /ccguide:refresh-docs first.
+If no changes, confirm everything is in sync and suggest running /ccguide:refresh-docs to update.
diff --git a/.claude/commands/ccguide/init-docs.md b/.claude/commands/ccguide/init-docs.md
new file mode 100644
index 0000000..2deeba4
--- /dev/null
+++ b/.claude/commands/ccguide/init-docs.md
@@ -0,0 +1,13 @@
+---
+description: Fetch official Anthropic Claude Code docs and store as local baseline snapshot
+---
+
+Use the `init_official_docs` MCP tool.
+
+This fetches ~1.2MB from Anthropic (takes ~5s) and stores 4 local cache files in ~/.cache/claude-code-guide/.
+Both the baseline and current snapshots are set to this version.
+
+After success, tell the user:
+- How many sections were found
+- The snapshot path
+- That they can now run /ccguide:diff-docs after /ccguide:refresh-docs to see what changed
diff --git a/.claude/commands/ccguide/refresh-docs.md b/.claude/commands/ccguide/refresh-docs.md
new file mode 100644
index 0000000..f6e0e42
--- /dev/null
+++ b/.claude/commands/ccguide/refresh-docs.md
@@ -0,0 +1,11 @@
+---
+description: Re-fetch official Anthropic Claude Code docs and update current snapshot (baseline unchanged)
+---
+
+Use the `refresh_official_docs` MCP tool.
+
+This fetches ~1.2MB from Anthropic (takes ~5s) and updates only the "current" snapshot.
+The baseline (set by init_official_docs) is never touched.
+
+After success, show the quick diff preview against the baseline that the tool returns.
+Remind the user to run /ccguide:diff-docs for the full detailed diff.
diff --git a/.claude/commands/ccguide/search-docs.md b/.claude/commands/ccguide/search-docs.md
new file mode 100644
index 0000000..93d9255
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+++ b/.claude/commands/ccguide/search-docs.md
@@ -0,0 +1,16 @@
+---
+description: Search official Anthropic Claude Code docs by keyword
+---
+
+Use the `search_official_docs` MCP tool with query: $ARGUMENTS
+
+If no query is given, ask the user what they want to search for.
+
+Default limit: 5 results.
+
+Present each result with:
+- Section title
+- Source URL (reproduce verbatim)
+- Excerpt showing the relevant content
+
+If no snapshot exists, tell the user to run /ccguide:init-docs first.
diff --git a/guide/ultimate-guide.md b/guide/ultimate-guide.md
index 6109e72..db0b6ad 100644
--- a/guide/ultimate-guide.md
+++ b/guide/ultimate-guide.md
@@ -11586,17 +11586,36 @@ Install the companion slash commands for one-keystroke access (stored in `~/.cla
 # Copy or symlink to ~/.claude/commands/ccguide/ to install globally
 ```
 
+**Guide commands:**
+
 | Command | Example | Description |
 |---------|---------|-------------|
 | `/ccguide:search` | `/ccguide:search hooks` | Search by keyword |
 | `/ccguide:cheatsheet` | `/ccguide:cheatsheet hooks` | Cheatsheet (full or section) |
-| `/ccguide:digest` | `/ccguide:digest week` | What changed this week |
+| `/ccguide:digest` | `/ccguide:digest week` | What changed this week (guide + CC releases) |
 | `/ccguide:example` | `/ccguide:example code-reviewer` | Fetch a template |
 | `/ccguide:examples` | `/ccguide:examples agents` | List templates by category |
 | `/ccguide:release` | `/ccguide:release 2.1.59` | Release details |
 | `/ccguide:changelog` | `/ccguide:changelog 10` | Recent guide CHANGELOG |
 | `/ccguide:topics` | `/ccguide:topics` | Browse all categories |
 
+**Official Anthropic docs tracker** (MCP v1.1.0+):
+
+| Command | Description |
+|---------|-------------|
+| `/ccguide:init-docs` | Fetch official docs + store as local baseline (run once) |
+| `/ccguide:refresh-docs` | Re-fetch latest docs, update current snapshot (baseline unchanged) |
+| `/ccguide:diff-docs` | Compare baseline vs current — added/removed/modified pages, 0 network |
+| `/ccguide:search-docs <query>` | Search official Anthropic docs from local cache |
+| `/ccguide:daily` | **Daily briefing**: refresh + diff official docs + guide/CC digest |
+
+Typical workflow:
+```bash
+/ccguide:init-docs          # once — stores baseline + current in ~/.cache/claude-code-guide/
+# days later...
+/ccguide:daily              # every day — refresh + diff + digest in one shot
+```
+
 #### Custom agent
 
 A `claude-code-guide` agent is included in `.claude/agents/claude-code-guide.md`. It uses Haiku (fast, cheap) and automatically searches the guide before answering any Claude Code question.