diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb296bd..56388e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,17 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 
+## [3.34.3] - 2026-03-11
+
+### Added
+
+- **MCP Server v1.1.0**: 4 new tools for tracking official Anthropic Claude Code docs
+  - `init_official_docs()` — fetch and store a local baseline snapshot (runs once)
+  - `refresh_official_docs()` — update the "current" snapshot without touching the baseline
+  - `diff_official_docs()` — compare baseline vs current at section level, zero network calls
+  - `search_official_docs(query)` — search official docs, loads only matching sections
+- **Local cache architecture**: 4 files in `~/.cache/claude-code-guide/` (index + content, baseline + current). Diff reads only lightweight index files (~50KB), never the full 1.2MB doc. Atomic writes via `.tmp` + rename to prevent corruption.
+
 ## [3.34.2] - 2026-03-11
 
 ### Documentation
diff --git a/README.md b/README.md
index cc5c966..7390ac5 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 <p align="center">
   <a href="https://github.com/FlorianBruniaux/claude-code-ultimate-guide/stargazers"><img src="https://img.shields.io/github/stars/FlorianBruniaux/claude-code-ultimate-guide?style=for-the-badge" alt="Stars"/></a>
-  <a href="./CHANGELOG.md"><img src="https://img.shields.io/badge/Updated-Mar_11,_2026_·_v3.34.2-brightgreen?style=for-the-badge" alt="Last Update"/></a>
+  <a href="./CHANGELOG.md"><img src="https://img.shields.io/badge/Updated-Mar_11,_2026_·_v3.34.3-brightgreen?style=for-the-badge" alt="Last Update"/></a>
   <a href="./quiz/"><img src="https://img.shields.io/badge/Quiz-271_questions-orange?style=for-the-badge" alt="Quiz"/></a>
   <a href="./examples/"><img src="https://img.shields.io/badge/Templates-204-green?style=for-the-badge" alt="Templates"/></a>
   <a href="./guide/security/security-hardening.md"><img src="https://img.shields.io/badge/🛡️_Threat_DB-15_vulnerabilities_·_655_malicious_skills-red?style=for-the-badge" alt="Threat Database"/></a>
@@ -872,7 +872,7 @@ See [CONTRIBUTING.md](./CONTRIBUTING.md) for guidelines.
 
 ---
 
-*Version 3.34.2 | Updated daily · Mar 11, 2026 | Crafted with Claude*
+*Version 3.34.3 | Updated daily · Mar 11, 2026 | Crafted with Claude*
 
 <!-- SEO Keywords -->
 <!-- claude code, claude code tutorial, anthropic cli, ai coding assistant, claude code mcp,
diff --git a/VERSION b/VERSION
index 91ad1c7..a440e8e 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.34.2
+3.34.3
diff --git a/guide/cheatsheet.md b/guide/cheatsheet.md
index 100ad7b..42fc6c3 100644
--- a/guide/cheatsheet.md
+++ b/guide/cheatsheet.md
@@ -12,7 +12,7 @@ tags: [cheatsheet, reference]
 
 **Written with**: Claude (Anthropic)
 
-**Version**: 3.34.2 | **Last Updated**: February 2026
+**Version**: 3.34.3 | **Last Updated**: February 2026
 
 ---
 
@@ -639,4 +639,4 @@ Speed: `rg` (~20ms) → Serena (~100ms) → ast-grep (~200ms) → grepai (~500ms
 
 **Author**: Florian BRUNIAUX | [@Méthode Aristote](https://methode-aristote.fr) | Written with Claude
 
-*Last updated: February 2026 | Version 3.34.2*
+*Last updated: February 2026 | Version 3.34.3*
diff --git a/guide/ultimate-guide.md b/guide/ultimate-guide.md
index a6774d8..6109e72 100644
--- a/guide/ultimate-guide.md
+++ b/guide/ultimate-guide.md
@@ -16,7 +16,7 @@ tags: [guide, reference, workflows, agents, hooks, mcp, security]
 
 **Last updated**: January 2026
 
-**Version**: 3.34.2
+**Version**: 3.34.3
 
 ---
 
@@ -5034,7 +5034,7 @@ The `.claude/` folder is your project's Claude Code directory for memory, settin
 | Personal preferences | `CLAUDE.md` | ❌ Gitignore |
 | Personal permissions | `settings.local.json` | ❌ Gitignore |
 
-### 3.34.2 Version Control & Backup
+### 3.34.3 Version Control & Backup
 
 **Problem**: Without version control, losing your Claude Code configuration means hours of manual reconfiguration across agents, skills, hooks, and MCP servers.
 
@@ -22888,4 +22888,4 @@ We'll evaluate and add it to this section if it meets quality criteria.
 
 **Contributions**: Issues and PRs welcome.
 
-**Last updated**: January 2026 | **Version**: 3.34.2
+**Last updated**: January 2026 | **Version**: 3.34.3
diff --git a/machine-readable/reference.yaml b/machine-readable/reference.yaml
index 5e409c6..50c27eb 100644
--- a/machine-readable/reference.yaml
+++ b/machine-readable/reference.yaml
@@ -3,7 +3,7 @@
 # Source: guide/ultimate-guide.md
 # Purpose: Condensed index for LLMs to quickly answer user questions about Claude Code
 
-version: "3.34.2"
+version: "3.34.3"
 updated: "2026-03-03"
 
 # ════════════════════════════════════════════════════════════════
@@ -1534,7 +1534,7 @@ ecosystem:
       - "Cross-links modified → Update all 4 repos"
     history:
       - date: "2026-01-20"
-        event: "Code Landing sync v3.34.2, 66 templates, cross-links"
+        event: "Code Landing sync v3.34.3, 66 templates, cross-links"
         commit: "5b5ce62"
       - date: "2026-01-20"
         event: "Cowork Landing fix (paths, README, UI badges)"
@@ -1546,7 +1546,7 @@ ecosystem:
 onboarding_matrix_meta:
   version: "2.1.0"
   last_updated: "2026-03-09"
-  aligned_with_guide: "3.34.2"
+  aligned_with_guide: "3.34.3"
   changelog:
     - version: "2.1.0"
       date: "2026-03-09"
@@ -1577,7 +1577,7 @@ onboarding_matrix:
       core: [rules, sandbox_native_guide, commands]
       time_budget: "5 min"
       topics_max: 3
-      note: "SECURITY FIRST - sandbox before commands (v3.34.2 critical fix)"
+      note: "SECURITY FIRST - sandbox before commands (v3.34.3 critical fix)"
 
     beginner_15min:
       core: [rules, sandbox_native_guide, workflow, essential_commands]
@@ -1666,7 +1666,7 @@ onboarding_matrix:
         - default: agent_validation_checklist
       time_budget: "60 min"
       topics_max: 6
-      note: "Dual-instance pattern for quality workflows (v3.34.2)"
+      note: "Dual-instance pattern for quality workflows (v3.34.3)"
 
   learn_security:
     intermediate_30min:
@@ -1677,7 +1677,7 @@ onboarding_matrix:
         - default: permission_modes
       time_budget: "30 min"
       topics_max: 4
-      note: "NEW goal (v3.34.2) - Security-focused learning path"
+      note: "NEW goal (v3.34.3) - Security-focused learning path"
 
     power_60min:
       core: [sandbox_native_guide, mcp_secrets_management, security_hardening]
@@ -1702,7 +1702,7 @@ onboarding_matrix:
       core: [rules, sandbox_native_guide, workflow, essential_commands, context_management, plan_mode]
       time_budget: "60 min"
       topics_max: 6
-      note: "Security foundation + core workflow (v3.34.2 sandbox added)"
+      note: "Security foundation + core workflow (v3.34.3 sandbox added)"
 
     intermediate_120min:
       core: [plan_mode, agents, skills, config_hierarchy, git_mcp_guide, hooks, mcp_servers]