Encounters API (Retail — Patch 12.0.0)

Comprehensive reference for encounter journal, mythic+, instances, scenarios, raid locks, and seasons.

Source: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API Current as of: Patch 12.0.0 (Build 65655) — January 28, 2026 Scope: Retail only.

Scope

Encounter Journal — Boss database, loot tables, abilities
C_ChallengeMode — M+ keystones, affixes, timers
C_MythicPlus — Weekly M+ runs, rating, seasonal
ScenarioInfo — Scenarios, delves, stages
InstanceLeaverInfo — Deserter/leaver info
Raid Locks — Saved instance lockouts
C_SeasonInfo — Seasonal content

Encounter Journal

Instance Navigation

Function	Returns	Description
`EJ_GetNumTiers()`	`numTiers`	Number of expansion tiers
`EJ_GetTierInfo(tierIndex)`	`name, link`	Tier name and link
`EJ_SelectTier(tierIndex)`	—	Select expansion tier
`EJ_GetCurrentTier()`	`tierIndex`	Current selected tier
`EJ_GetInstanceByIndex(index, isRaid)`	`instanceID, name, description, bgImage, buttonImage1, loreImage, buttonImage2, dungeonAreaMapID, link, shouldDisplayDifficulty`	Instance at index
`EJ_GetNumInstances()`	—	Not a function; iterate `EJ_GetInstanceByIndex` until nil
`EJ_SelectInstance(instanceID)`	—	Select instance
`EJ_GetInstanceInfo(instanceID)`	`name, description, bgImage, ...`	Instance info
`EJ_InstanceIsRaid()`	`isRaid`	Selected is raid?

Encounter (Boss) Data

Function	Returns	Description
`EJ_GetEncounterInfoByIndex(index)`	`name, description, journalEncounterID, rootSectionID, link, journalInstanceID, dungeonEncounterID, instanceID`	Boss at index
`EJ_GetEncounterInfo(encounterID)`	`name, description, journalEncounterID, rootSectionID, link, journalInstanceID, dungeonEncounterID, instanceID`	Boss info
`EJ_SelectEncounter(encounterID)`	—	Select encounter
`EJ_GetNumEncountersForLootByIndex(index)`	`numEncounters`	Bosses with loot
`EJ_GetCreatureInfo(index, encounterID)`	`id, name, description, displayInfo, iconImage, ...`	Creature info

Section (Ability) Data

Function	Returns	Description
`EJ_GetSectionInfo(sectionID)`	`info`	Section/ability info
`EJ_GetNumSectionsForEncounter(encounterID)`	`numSections`	Number of sections

Section Info Fields

title — Section title
description — Section text
headerType — Header type enum
abilityIcon — Icon texture
creatureDisplayID — Display ID
siblingSectionID — Next sibling
firstChildSectionID — First child
filteredByDifficulty — Hidden by difficulty filter?
link — Journal link
startsOpen — Default expanded?

Loot

Function	Returns	Description
`EJ_GetLootInfoByIndex(index)`	`name, icon, slotFilter, armorType, itemID, link, encounterID`	Loot at index
`EJ_GetNumLoot()`	`numLoot`	Number of loot items
`EJ_SetLootFilter(classID, specID)`	—	Filter by class/spec
`EJ_GetLootFilter()`	`classID, specID`	Current filter
`EJ_SetSlotFilter(slotFilter)`	—	Filter by slot
`EJ_GetSlotFilter()`	`slotFilter`	Current slot filter
`EJ_ResetLootFilter()`	—	Clear all filters
`EJ_IsLootListOutOfDate()`	`isOutOfDate`	Needs refresh?

Difficulty

Function	Returns	Description
`EJ_SetDifficulty(difficultyID)`	—	Set EJ difficulty
`EJ_GetDifficulty()`	`difficultyID`	Current EJ difficulty
`EJ_GetNumEncountersByDifficulty(difficultyID)`	`numEncounters`	Bosses at difficulty

Search

Function	Returns	Description
`EJ_SetSearch(text)`	—	Set search text
`EJ_GetSearchResult(index)`	`resultInfo`	Search result
`EJ_GetNumSearchResults()`	`numResults`	Num results
`EJ_IsSearchFinished()`	`isFinished`	Search done?
`EJ_ClearSearch()`	—	Clear search

C_ChallengeMode — Mythic+ Keystones

Keystone Info

Function	Returns	Description
`C_ChallengeMode.GetActiveKeystoneInfo()`	`activeKeystoneLevel, activeAffixIDs, wasActiveKeystoneCharged`	Active keystone
`C_ChallengeMode.GetActiveChallengeMapID()`	`mapID`	Active M+ map
`C_ChallengeMode.GetActiveKeystoneLink()`	`link`	Keystone hyperlink
`C_ChallengeMode.GetSlottedKeystoneInfo()`	`mapID, affixIDs, keystoneLevel`	Slotted keystone
`C_ChallengeMode.HasSlottedKeystone()`	`hasKeystone`	Keystone slotted?
`C_ChallengeMode.SlotKeystone()`	`slotted`	Slot keystone
`C_ChallengeMode.RemoveKeystone()`	`removed`	Remove keystone

Map & Affix Data

Function	Returns	Description
`C_ChallengeMode.GetMapTable()`	`mapIDs`	All M+ maps
`C_ChallengeMode.GetMapUIInfo(mapID)`	`name, id, timeLimit, texture, backgroundTexture`	Map info
`C_ChallengeMode.GetAffixInfo(affixID)`	`name, description, filedataid`	Affix info
`C_ChallengeMode.GetCurrentAffixes()`	`affixes`	This week's affixes

Completion & Records

Function	Returns	Description
`C_ChallengeMode.GetMapPlayerStats(mapID)`	`durationSec, ...`	Personal best
`C_ChallengeMode.GetGuildLeaders()`	`guildLeaders`	Guild best runs
`C_ChallengeMode.GetCompletionInfo()`	`mapID, level, time, onTime, keystoneUpgradeLevels, practiceRun, oldOverallDungeonScore, newOverallDungeonScore, IsMapRecord, IsAffixRecord, PrimaryAffix, isEligibleForScore, members`	Run completion data
`C_ChallengeMode.IsChallengeModeActive()`	`isActive`	In active M+?
`C_ChallengeMode.GetDeathCount()`	`numDeaths, timeLost`	Deaths and penalty
`C_ChallengeMode.GetActiveChallengeModeLevel()`	`level`	Current key level

Rewards

Function	Returns	Description
`C_ChallengeMode.GetChallengeMapInfo(mapID, keystoneLevel)`	`rewardInfo`	Rewards for key level

C_MythicPlus — Seasonal M+ Data

Function	Returns	Description
`C_MythicPlus.GetCurrentSeason()`	`seasonID`	Current season
`C_MythicPlus.GetRunHistory(includePreviousWeeks, includeIncompleteRuns)`	`runs`	Run history
`C_MythicPlus.GetRewardLevelFromKeystoneLevel(keystoneLevel)`	`rewardLevel`	Reward item level
`C_MythicPlus.GetOwnedKeystoneLevel()`	`level`	Owned key level
`C_MythicPlus.GetOwnedKeystoneChallengeMapID()`	`mapID`	Owned key dungeon
`C_MythicPlus.GetOwnedKeystoneMapID()`	`mapID`	Owned key map
`C_MythicPlus.GetCurrentAffixes()`	`affixIDs`	Current affixes
`C_MythicPlus.GetWeeklyChestRewardLevel()`	`rewardLevel`	Vault reward level
`C_MythicPlus.GetSeasonBestAffixScoreInfoForMap(mapID)`	`bestScoreInfo`	Best scores by affix
`C_MythicPlus.GetSeasonBestForMap(mapID)`	`intimeInfo, overtimeInfo`	Season best runs
`C_MythicPlus.GetOverallDungeonScore()`	`score`	Overall M+ rating
`C_MythicPlus.RequestCurrentAffixes()`	—	Request affix data
`C_MythicPlus.RequestMapInfo()`	—	Request map data
`C_MythicPlus.RequestRewards()`	—	Request reward data
`C_MythicPlus.IsDungeonScorable(mapID)`	`isScorable`	Awards score?

ScenarioInfo — Scenarios & Delves

Function	Returns	Description
`C_ScenarioInfo.GetScenarioInfo()`	`scenarioInfo`	Current scenario
`C_ScenarioInfo.GetScenarioStepInfo()`	`stepInfo`	Current step
`C_ScenarioInfo.GetCriteriaInfo(criteriaIndex)`	`criteriaInfo`	Criteria at index
`C_ScenarioInfo.GetCriteriaInfoByStep(stepIndex, criteriaIndex)`	`criteriaInfo`	Step criteria
`C_ScenarioInfo.GetScenarioStepByIndex(index)`	`stepInfo`	Step at index

Scenario Info Fields

name — Scenario name
currentStage — Current stage
numStages — Total stages
flags — Scenario flags
isComplete — Completed?
xp — XP reward
money — Gold reward
type — Scenario type
area — Area name
uiTextureKit — UI texture kit

Step Info Fields

title — Step title
description — Step description
numCriteria — Criteria count
isComplete — Step complete?
isBonusObjective — Bonus objective?
isFinal — Final step?
weightedProgress — Progress percentage

Raid Locks (Saved Instances)

Function	Returns	Description
`GetNumSavedInstances()`	`numInstances`	Saved instance count
`GetSavedInstanceInfo(index)`	`name, id, reset, difficulty, locked, extended, instanceIDMostSig, isRaid, maxPlayers, difficultyName, numEncounters, encounterProgress, extendDisabled`	Saved instance info
`GetSavedInstanceEncounterInfo(index, encounterIndex)`	`bossName, fileDataID, isKilled, isIneligible`	Boss kill status
`SetSavedInstanceExtend(index, extend)`	—	Extend lockout
`GetNumSavedWorldBosses()`	`count`	World boss locks
`GetSavedWorldBossInfo(index)`	`name, id, reset`	World boss info
`RequestRaidInfo()`	—	Request lock data

InstanceLeaverInfo — Deserter

Function	Returns	Description
`C_InstanceLeaverInfo.GetLeaverInfo()`	`leaverInfo`	Leaver/deserter info
`C_InstanceLeaverInfo.HasLeaverPenalty()`	`hasPenalty`	Has deserter?
`C_InstanceLeaverInfo.GetLeaverPenaltyTimeRemaining()`	`seconds`	Time remaining

C_SeasonInfo — Seasonal Content

Function	Returns	Description
`C_SeasonInfo.GetCurrentDisplaySeasonID()`	`seasonID`	Current display season
`C_SeasonInfo.GetCurrentSeason()`	`seasonID`	Current season
`C_SeasonInfo.GetSeasonInfo(seasonID)`	`seasonInfo`	Season data

Common Patterns

List Encounter Journal Bosses

-- Select an instance and list its bosses
EJ_SelectTier(EJ_GetCurrentTier())
EJ_SelectInstance(instanceID)

local index = 1
while true do
    local name, description, encounterID, rootSectionID = EJ_GetEncounterInfoByIndex(index)
    if not name then break end
    print(index, name, "- EncounterID:", encounterID)
    index = index + 1
end

Show M+ Keystone Info

local function ShowKeystoneInfo()
    local level = C_MythicPlus.GetOwnedKeystoneLevel()
    local mapID = C_MythicPlus.GetOwnedKeystoneChallengeMapID()
    if level and mapID then
        local name = C_ChallengeMode.GetMapUIInfo(mapID)
        print("Keystone:", name, "+", level)
    else
        print("No keystone")
    end
    
    local score = C_MythicPlus.GetOverallDungeonScore()
    print("M+ Rating:", score or 0)
end

Check Active M+ Progress

local function ShowMythicPlusProgress()
    if not C_ChallengeMode.IsChallengeModeActive() then
        print("Not in an active M+")
        return
    end
    
    local level = C_ChallengeMode.GetActiveChallengeModeLevel()
    local mapID = C_ChallengeMode.GetActiveChallengeMapID()
    local name = C_ChallengeMode.GetMapUIInfo(mapID)
    local deaths, timeLost = C_ChallengeMode.GetDeathCount()
    
    print(name, "+", level)
    print("Deaths:", deaths, "Time lost:", timeLost, "sec")
end

List Saved Instances

RequestRaidInfo()
-- Wait for UPDATE_INSTANCE_INFO event, then:
local numSaved = GetNumSavedInstances()
for i = 1, numSaved do
    local name, id, reset, difficulty, locked, extended, 
          _, isRaid, maxPlayers, diffName, numEncounters, progress = 
          GetSavedInstanceInfo(i)
    if locked then
        print(name, diffName, progress .. "/" .. numEncounters, 
              "Reset:", SecondsToTime(reset))
    end
end

Key Events

Event	Payload	Description
`EJ_LOOT_DATA_RECIEVED`	itemID	Loot data loaded
`EJ_DIFFICULTY_UPDATE`	difficultyID	EJ difficulty changed
`CHALLENGE_MODE_START`	mapID	M+ started
`CHALLENGE_MODE_COMPLETED`	mapID	M+ completed
`CHALLENGE_MODE_RESET`	mapID	M+ reset
`CHALLENGE_MODE_DEATH_COUNT_UPDATED`	—	Death count changed
`CHALLENGE_MODE_KEYSTONE_RECEPTABLE_OPEN`	—	Font of Power opened
`CHALLENGE_MODE_KEYSTONE_SLOTTED`	—	Keystone slotted
`MYTHIC_PLUS_CURRENT_AFFIX_UPDATE`	—	Affixes updated
`MYTHIC_PLUS_NEW_WEEKLY_RECORD`	mapID	New weekly best
`MYTHIC_PLUS_NEW_SEASON_RECORD`	mapID	New season best
`SCENARIO_UPDATE`	—	Scenario state changed
`SCENARIO_CRITERIA_UPDATE`	—	Criteria updated
`SCENARIO_COMPLETED`	—	Scenario completed
`UPDATE_INSTANCE_INFO`	—	Saved instance data
`INSTANCE_LOCK_START`	—	Lockout acquired
`INSTANCE_LOCK_STOP`	—	Lockout released
`INSTANCE_LOCK_WARNING`	—	Lockout warning

Gotchas & Restrictions

EJ data is async — Loot data loads asynchronously. Wait for EJ_LOOT_DATA_RECIEVED before reading loot.
Tier selection matters — EJ functions operate on the currently selected tier. Always set tier first.
M+ completion data is temporary — GetCompletionInfo() only returns data immediately after a run.
Keystone slotting requires hardware event — Players must manually interact with the Font of Power.
Raid lock extensions — SetSavedInstanceExtend() must be called during the lock's active period.
Scenario types vary — Delves, island expeditions, and scenarios all use ScenarioInfo with different type flags.
M+ rating is per-season — GetOverallDungeonScore() resets each season.
RequestRaidInfo() is async — Wait for UPDATE_INSTANCE_INFO before reading saved instances.

wow-api-encounters

Encounters API (Retail — Patch 12.0.0)

Scope

Encounter Journal

Instance Navigation

Encounter (Boss) Data

Section (Ability) Data

Section Info Fields

Loot

Difficulty

Search

C_ChallengeMode — Mythic+ Keystones

Keystone Info

Map & Affix Data

Completion & Records

Rewards

C_MythicPlus — Seasonal M+ Data

ScenarioInfo — Scenarios & Delves

Scenario Info Fields

Step Info Fields

Raid Locks (Saved Instances)

InstanceLeaverInfo — Deserter

C_SeasonInfo — Seasonal Content

Common Patterns

List Encounter Journal Bosses

Show M+ Keystone Info

Check Active M+ Progress

List Saved Instances

Key Events

Gotchas & Restrictions