Game Center with asc

Manage Game Center detail, achievements, and leaderboards through the App Store Connect API.

Authentication

asc auth login --key-id <id> --issuer-id <id> --private-key-path ~/.asc/AuthKey.p8

How to Navigate (CAEOAS Affordances)

Every JSON response contains an "affordances" field with ready-to-run commands — IDs already filled in. Start from the Game Center detail and navigate to achievements and leaderboards.

{
  "id": "gc-abc123",
  "appId": "6443417124",
  "isArcadeEnabled": false,
  "affordances": {
    "getDetail": "asc game-center detail get --app-id 6443417124",
    "listAchievements": "asc game-center achievements list --detail-id gc-abc123",
    "listLeaderboards": "asc game-center leaderboards list --detail-id gc-abc123"
  }
}

Typical Workflow

Set up Game Center for an app

# 1. Get the Game Center detail (find the detail ID)
asc game-center detail get --app-id 6443417124 --pretty

# 2. List existing achievements
asc game-center achievements list --detail-id gc-abc123 --pretty

# 3. Create a new achievement
asc game-center achievements create \
  --detail-id gc-abc123 \
  --reference-name "First Steps" \
  --vendor-identifier first_steps \
  --points 10 \
  --pretty

# 4. Create a leaderboard
asc game-center leaderboards create \
  --detail-id gc-abc123 \
  --reference-name "All Time High" \
  --vendor-identifier all_time_high \
  --score-sort-type DESC \
  --submission-type BEST_SCORE \
  --pretty

View all Game Center content at a glance

DETAIL_ID=$(asc game-center detail get --app-id APP_ID | jq -r '.data[0].id')
asc game-center achievements list --detail-id "$DETAIL_ID" --output table
asc game-center leaderboards list --detail-id "$DETAIL_ID" --output table

Clean up — delete an achievement

# Copy the delete affordance from the achievement and run it
asc game-center achievements delete --achievement-id ach-abc123

Commands

asc game-center detail get

Get Game Center configuration for an app.

Flag	Required	Description
--app-id	yes	App Store Connect app ID
--output table|json	no	Output format (default: json)
--pretty	no	Pretty-print JSON

asc game-center detail get --app-id 6443417124 --pretty
asc game-center detail get --app-id 6443417124 --output table

asc game-center achievements list

List all achievements for a Game Center detail.

Flag	Required	Description
--detail-id	yes	Game Center detail ID
--output table|json	no	Output format
--pretty	no	Pretty-print JSON

asc game-center achievements list --detail-id gc-abc123 --pretty
asc game-center achievements list --detail-id gc-abc123 --output table

asc game-center achievements create

Create a new achievement.

Flag	Required	Description
--detail-id	yes	Game Center detail ID
--reference-name	yes	Internal reference name
--vendor-identifier	yes	Unique identifier (e.g. first_steps)
--points	yes	Point value for the achievement
--show-before-earned	no	Show achievement before earned (flag)
--repeatable	no	Achievement can be earned multiple times (flag)
--pretty	no	Pretty-print JSON

asc game-center achievements create \
  --detail-id gc-abc123 \
  --reference-name "Speed Runner" \
  --vendor-identifier speed_runner \
  --points 50 \
  --repeatable

asc game-center achievements delete

Delete an achievement.

Flag	Required	Description
--achievement-id	yes	Achievement ID to delete

asc game-center achievements delete --achievement-id ach-abc123

asc game-center leaderboards list

List all leaderboards for a Game Center detail.

Flag	Required	Description
--detail-id	yes	Game Center detail ID
--output table|json	no	Output format
--pretty	no	Pretty-print JSON

asc game-center leaderboards list --detail-id gc-abc123 --output table

asc game-center leaderboards create

Create a new leaderboard.

Flag	Required	Description
--detail-id	yes	Game Center detail ID
--reference-name	yes	Internal reference name
--vendor-identifier	yes	Unique identifier (e.g. all_time_high)
--score-sort-type	yes	ASC or DESC
--submission-type	yes	BEST_SCORE or MOST_RECENT_SCORE
--pretty	no	Pretty-print JSON

asc game-center leaderboards create \
  --detail-id gc-abc123 \
  --reference-name "Speed Run" \
  --vendor-identifier speed_run \
  --score-sort-type ASC \
  --submission-type MOST_RECENT_SCORE

asc game-center leaderboards delete

Delete a leaderboard.

Flag	Required	Description
--leaderboard-id	yes	Leaderboard ID to delete

asc game-center leaderboards delete --leaderboard-id lb-abc123

Domain Models

GameCenterDetail — Game Center configuration for an app

• id — Game Center detail ID
• appId — parent App ID (injected from request, not returned by API)
• isArcadeEnabled — whether Apple Arcade is enabled
• Affordances: getDetail, listAchievements, listLeaderboards

GameCenterAchievement — A single Game Center achievement

• id — achievement ID
• gameCenterDetailId — parent detail ID (injected)
• referenceName — internal name
• vendorIdentifier — unique bundle-style identifier
• points — point value
• isShowBeforeEarned — visible before earned
• isRepeatable — can be earned multiple times
• isArchived — whether archived
• Affordances: listAchievements, delete

GameCenterLeaderboard — A single Game Center leaderboard

• id — leaderboard ID
• gameCenterDetailId — parent detail ID (injected)
• referenceName — internal name
• vendorIdentifier — unique identifier
• scoreSortType — ASC or DESC
• submissionType — BEST_SCORE or MOST_RECENT_SCORE
• isArchived — whether archived
• Affordances: listLeaderboards, delete

Full Command Reference

See commands.md for all flags and examples.