HALO RECORD
Halo MCC Player Stats, Leaderboards, and Match History
Targeting · Standby
// QUICK ACQUIRE
Top Supporters
BackerTotalSince
Top Rated
#PlayerRating
Match Spotlight
Featured · Live Feed
Uploaded by Halo Record
HALO 3TEAM SLAYER BRBLACKOUT
×214
Kills
2.80
K / D
35
Medals
Top Fragger · BRbecued
8 Players
// 03 · Operations Manual
How Halo Record Works
Everything you see on a player profile, explained.
1
Data & Refresh
Live · Auto
15-minute cache for fast loads
Your service record, TrueSkill ratings, and match history are cached. Repeat visits within 15 minutes load instantly from cache.
Auto-refreshes after 15 minutes
When the cache expires, your next visit automatically pulls fresh data from the Halo API. No action needed.
Force refresh on demand
The floating button in the bottom-right corner of any player page forces an immediate refresh, bypassing the cache.
2
TrueSkill Ratings Breakdown
Hidden · Decoded
MCC uses Microsoft's TrueSkill rating system behind the scenes to evaluate every player — even in Social playlists. Your rating determines who you get matched against and how teams are balanced, with the system pairing players of similar skill and evening out both sides so every match is competitive.
What most players don't realize is that Social playlists carry hidden skill ratings too. Your Social rating shapes match quality just as much as Ranked — you just can't normally see it. Halo Record makes those hidden ratings visible so you can track your real skill across every playlist.
Ratings shift after every game. Beat higher-rated opponents and yours jumps; lose to lower-rated ones and it drops sharply. The system moves faster when it's uncertain about your skill (high sigma) and slower once it's confident. Each card below represents a playlist — here's what the numbers mean.
TrueSkill Ratings
Social 4v4
43
σ 909,456
â–² +8,365
Social BTB
38
σ 864,708
â–² +2,140
Social 2v2
35
σ 798,681
â–¼ -17,861
Social 1v1
31
σ 906,116
â–² +15,991
- Rating
- Conservative skill estimate. Calculated as μ minus 3× sigma.
- Mu
- Average estimated skill. Rises and falls with wins and losses.
- Sigma
- Confidence in the rating. Decreases as the system becomes more certain of your skill.
- Level
- In-game skill rank from 1 to 50, displayed in the card header.
- Delta
- Change since last data refresh, shown as a green or red badge.
- Games
- Total rated matches played in that playlist.
3
Companion App
Background · Auto-upload
The Halo API only returns your most recent ~100 matches. Older games disappear. The companion app solves this by capturing carnage reports directly from your PC.
A lightweight Windows app that watches your Halo MCC carnage report folder and auto-uploads match data to Halo Record after every game. It runs silently in the system tray.
1
Download and install the uploader
2
Sign in with your Xbox account
3
Generate an API key in Settings
4
The app auto-detects your watch folder
5
Play Halo — matches upload automatically
Download // Windows 10+ required
Example Carnage Report
#
Player
Score
K
D
A
K/D
Kill Breakdown
Weapon22
Grenade4
Melee2
Other0
Combat
Kill Streak12
Betrayals0
Suicides0
Time Played22:30
Medals22
Rivalries
Killed Most
BxSouljah
8×
Nemesis
WyvernSlayer
4×
Medals
×1
×2
×2
×8
×4
×6
×1
Kill Breakdown
Weapon15
Grenade2
Melee2
Other0
Combat
Kill Streak7
Betrayals1
Suicides0
Time Played22:30
Medals14
Rivalries
Killed Most
WyvernSlayer
6×
Nemesis
BxSouljah
5×
Medals
×1
×1
×2
×4
Kill Breakdown
Weapon20
Grenade3
Melee1
Other0
Combat
Kill Streak9
Betrayals0
Suicides1
Time Played22:30
Medals18
Rivalries
Killed Most
Colin Rages
7×
Nemesis
Tylenul
8×
Medals
×1
×2
×3
×5
×3
Kill Breakdown
Weapon11
Grenade2
Melee1
Other0
Combat
Kill Streak4
Betrayals0
Suicides2
Time Played22:30
Medals8
Rivalries
Killed Most
Colin Rages
4×
Nemesis
Tylenul
6×
Medals
×1
×2
×2
Frequently Asked Questions
TrueSkill is Microsoft's skill rating system used by Halo MCC to match players of similar ability. Each player has a
mu value (estimated skill) and a sigma value (uncertainty). Halo Record does not calculate TrueSkill itself — we read the official values directly from the Halo MCC API and display them alongside the derived rank the game shows you in-client.Install the Halo Record Uploader desktop app from the Download page, sign in with your Xbox Live account, and leave it running while you play. It reads carnage reports MCC writes to your PC and syncs them automatically. Recent matches also populate without the uploader, but only the uploader backfills your full history.
No. Halo Record is an independent community project with no affiliation, endorsement, or sponsorship from Microsoft Corporation, 343 Industries, Xbox Game Studios, or Bungie. All Halo and Xbox trademarks belong to their respective owners.
The unofficial Halo MCC API exposes only a short window of recent matches per player. If you have not played recently, or the API has not yet populated your latest games, matches may be missing. Running the desktop uploader while you play ensures every carnage report is captured as matches complete.
mu is your estimated skill. sigma is the system's uncertainty about that estimate — it starts high for new players and shrinks as you play more games. The displayed rating is a conservative estimate derived from both values, which is why two players with the same mu can show different ratings.Halo Record tracks stats across all Halo: The Master Chief Collection titles the MCC API exposes, including Halo: Combat Evolved Anniversary, Halo 2, Halo 2: Anniversary, Halo 3, Halo 3: ODST, Halo: Reach, and Halo 4. Playlist availability depends on what is live in MCC at any given time.
Leaderboards refresh throughout the day as new matches are captured from the API and uploader. TrueSkill-based playlist leaderboards update as ratings change; service record leaderboards update as new games are recorded. There is no fixed daily cutoff — rankings move in near real time.