diff --git a/.github/README.md b/.github/README.md
index 1a7b2c1..f750ae6 100644
--- a/.github/README.md
+++ b/.github/README.md
@@ -22,6 +22,7 @@
 - **Per-player cooldown system** — macro-free, scoreboard-based
 - **Run at fixed world coordinates** — execute commands from any integer coordinate
 - **Announce system** — title, subtitle, and actionbar in a single call
+- **Structured log system** — write/show/clear with severity levels
 - **Version query API** — check MCE version from storage at runtime
 - **LanternLoad integrated** — other packs can depend on MCE with guaranteed load order
 - Versioned API (`load.status` score for dependency checks)
@@ -37,7 +38,7 @@
 1. Download the latest release zip.
 2. Place the `marker-command-engine` folder into your world's `datapacks/` folder.
 3. Run `/reload`.
-4. You should see `[MCE] Marker Command Engine v2.0.0 loaded!` in chat.
+4. You should see `[MCE] Marker Command Engine v2.2.0 loaded!` in chat.
 
 ---
 
@@ -57,7 +58,7 @@ function mce:api/run/cmd
 tag @a[name=Steve,limit=1] add mce.executor
 
 # Set the command and call
-data modify storage mce:cmd Command set value "say I am Steve!"
+data modify storage mce:cmd Command set value "execute as @a[tag=mce.executor] run say I am Steve!"
 function mce:api/run/as
 # mce.executor tag is removed automatically
 ```
@@ -141,13 +142,41 @@ data modify storage mce:announce Title set value "Go!"
 function mce:api/util/announce
 ```
 
+### Log
+
+```mcfunction
+# Write an entry using level shorthands (recommended)
+data modify storage mce:log_write msg set value "Player joined the arena."
+function mce:api/log/info   # severity 0 — white
+
+data modify storage mce:log_write msg set value "Cooldown nearly expired."
+function mce:api/log/warn   # severity 1 — yellow
+
+data modify storage mce:log_write msg set value "Command failed."
+function mce:api/log/error  # severity 2 — red
+
+# Or set lvl manually and call write
+data modify storage mce:log_write msg set value "Custom entry."
+data modify storage mce:log_write lvl set value 1
+function mce:api/log/write
+
+# Show all entries to @s (colored by level)
+function mce:api/log/show
+
+# Clear all entries
+function mce:api/log/clear
+```
+
+The log holds the last **64 entries**. Older entries are dropped automatically.
+Each entry is stored as `{n: <int>, lvl: <0|1|2>, msg: "<string>"}`.
+
 ### Version
 
 ```mcfunction
 # Prints version to chat and writes to storage.
 function mce:api/util/version
-# mce:output Version.string -> "2.0.0"
-# mce:output Version.numeric -> 2000000
+# mce:output Version.string  -> "2.2.0"
+# mce:output Version.numeric -> 2002000
 ```
 
 ### Help
@@ -201,6 +230,17 @@ Only `mce:api/*` functions are part of the public API. All `mce:core/*` function
 | `mce:api/cooldown/clear` | 1.19.3+ | Clear cooldown for `@s` immediately |
 | `mce:api/cooldown/get` | 1.19.3+ | Write remaining ticks to `mce:output Cooldown.remaining` |
 
+### `mce:api/log/`
+
+| Function | Description |
+|---|---|
+| `mce:api/log/write` | Append entry from `mce:log_write {msg, lvl}` |
+| `mce:api/log/info` | Shorthand: write with `lvl=0` (INFO) |
+| `mce:api/log/warn` | Shorthand: write with `lvl=1` (WARN) |
+| `mce:api/log/error` | Shorthand: write with `lvl=2` (ERROR) |
+| `mce:api/log/show` | Print all entries to `@s` (colored by level) |
+| `mce:api/log/clear` | Clear all entries and reset counter |
+
 ### `mce:api/util/`
 
 | Function | Description |
@@ -211,6 +251,10 @@ Only `mce:api/*` functions are part of the public API. All `mce:core/*` function
 | `mce:api/util/cancel` | Abort active command execution (does not affect queue) |
 | `mce:api/util/debug_toggle` | Toggle debug output on/off |
 | `mce:api/util/help` | Print usage in chat |
+| `mce:api/util/broadcast` | Send message to all players from `mce:broadcast {Msg, Prefix}` |
+| `mce:api/util/error_clear` | Reset `mce:error` state and counter |
+
+> `mce:api/util/log` and `mce:api/util/log_clear` are deprecated — use `mce:api/log/*` instead.
 
 ---
 
@@ -227,9 +271,9 @@ To make your pack load after MCE, add your load function to `#load:post_load` an
 
 ```mcfunction
 # yourpack:load
-# Require MCE v2.0.0+ (score format: major*1000000 + minor*1000 + patch)
-execute unless score mce load.status matches 2000000.. run tellraw @a {"text":"[YourPack] ERROR: MCE v2.0.0+ required!","color":"red"}
-execute unless score mce load.status matches 2000000.. run return 0
+# Require MCE v2.2.0+ (score format: major*1000000 + minor*1000 + patch)
+execute unless score mce load.status matches 2002000.. run tellraw @a {"text":"[YourPack] ERROR: MCE v2.2.0+ required!","color":"red"}
+execute unless score mce load.status matches 2002000.. run return 0
 
 # Your init here...
 ```
@@ -242,7 +286,7 @@ execute unless score mce load.status matches 2000000.. run return 0
 - **Command block position**: `0 -64 0`
 - **Reset delay**: 3 ticks after execution
 - **Queue interval**: 3 ticks between commands
-- **Version score**: `mce load.status` = `2000000` (v2.0.0)
+- **Version score**: `mce load.status` = `2002000` (v2.2.0)
 
 ## Storage Reference
 
@@ -257,24 +301,34 @@ execute unless score mce load.status matches 2000000.. run return 0
 | `mce:queue` | `commands` | List | Pending queue commands |
 | `mce:batch` | `commands` | List | Batch staging area |
 | `mce:schedule` | `jobs` | List | Scheduled job list |
-| `mce:config` | `debug` | Byte | Debug mode flag (`1b` = on) |
+| `mce:config` | `mce.debug` | Byte | Debug mode flag (`1b` = on) |
+| `mce:config` | `mce.version` | String | MCE version string |
 | `mce:announce` | `Title` | String | Title text for `util/announce` |
 | `mce:announce` | `Subtitle` | String | Subtitle text for `util/announce` |
 | `mce:announce` | `Actionbar` | String | Actionbar text for `util/announce` |
 | `mce:announce_times` | `Preset` | String | Timing preset: `fast` `normal` `slow` `instant` |
+| `mce:log_write` | `msg` | String | Message to write (input for `log/write`) |
+| `mce:log_write` | `lvl` | Int | Severity level: `0`=INFO `1`=WARN `2`=ERROR |
+| `mce:log` | `entries` | List | Log entries: `{n, lvl, msg}` (max 64) |
+| `mce:broadcast` | `Msg` | String | Message text for `util/broadcast` |
+| `mce:broadcast` | `Prefix` | String | Optional prefix for `util/broadcast` |
 | `mce:output` | `Cooldown.ready` | Byte | `1b` if `@s` is ready, `0b` if on cooldown |
 | `mce:output` | `Cooldown.remaining` | Int | Remaining cooldown ticks |
-| `mce:output` | `Version.string` | String | MCE version string (e.g. `"2.0.0"`) |
-| `mce:output` | `Version.numeric` | Int | MCE version as int (e.g. `2000000`) |
+| `mce:output` | `Version.string` | String | MCE version string (e.g. `"2.2.0"`) |
+| `mce:output` | `Version.numeric` | Int | MCE version as int (e.g. `2002000`) |
+| `mce:error` | `Last` | String | Last error message |
+| `mce:error` | `Code` | String | Last error code (e.g. `ERR_NO_CMD`) |
+| `mce:error` | `Count` | Int | Total error count since load |
 
 ## Scoreboard Reference
 
 | Objective | Description |
 |---|---|
-| `mce.queue` | Queue state |
+| `mce.queue` | Queue state and error counter |
 | `mce.tick` | Internal tick counters |
 | `mce.compat` | Compat system flags |
 | `mce.cd` | Per-player cooldown (remaining ticks, 0 = ready) |
+| `mce.log` | Log entry counter and size tracking |
 
 > **Note:** `mce:cmd Executor` is no longer used. Tag your target entity with `mce.executor` before calling `mce:api/run/as`.
 
@@ -282,6 +336,21 @@ execute unless score mce load.status matches 2000000.. run return 0
 
 ## Changelog
 
+### v2.2.0
+- Added `mce:api/log/write` — structured log entries `{n, lvl, msg}`, 64-entry cap
+- Added `mce:api/log/info` / `log/warn` / `log/error` — level shorthands
+- Added `mce:api/log/show` — level-colored tellraw output, macro-free
+- Added `mce:api/log/clear` — clears entries and resets counter
+- Added `mce:api/util/error_clear` — resets error state and counter
+- Added missing function tags for `api/run/at`, `api/util/announce`, `announce_times`, `version`, `api/multi/run`
+- Deprecated `mce:api/util/log` and `util/log_clear` (compat wrappers kept)
+- Added `mce.log` scoreboard objective
+
+### v2.1.0
+- Added `mce:api/multi/run` — execute title, subtitle, actionbar, message, and commands in a single call
+- Added `mce:api/util/broadcast` — send a message to all players from storage
+- Added `mce:api/util/log` — append command string to in-memory audit log
+
 ### v2.0.0
 - Added `mce:api/run/at` — execute commands from fixed world coordinates
 - Added `mce:api/util/announce` — send title, subtitle, actionbar in one call