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wow-api-spells-abilities

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Mis à jour12 février 2026 à 21:50

Complete reference for WoW Retail Spell, SpellBook, ActionBar, Cooldown, Totem, and Shapeshifting APIs. Covers C_Spell info/cooldown/usability/range, C_SpellBook navigation/slot queries, C_ActionBar slot management/state/overrides, C_SpellActivationOverlay procs, C_SpellDiminish DR tracking, C_CooldownViewer, C_AssistedCombat rotation helpers, totem queries, shapeshift forms, casting/channeling functions, flyouts, spell confirmation, and global spell category functions. Use when working with spells, abilities, action bars, cooldowns, casting, totems, shapeshift forms, spell procs, or diminishing returns.

Installation

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Source

JBurlison

JBurlison/WoWAddonAPIAgents

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Métiers associésSOC

Basé sur la classification professionnelle SOC

Développeurs de logicielsProfessions informatiques et mathématiques·SOC 15-1252

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name

wow-api-spells-abilities

description

Spell & Ability API (Retail — Patch 12.0.0)

Comprehensive reference for all Spell, SpellBook, ActionBar, Cooldown, Totem, Shapeshifting, and related APIs. Covers spell information, cooldowns, usability, range checking, spellbook navigation, action bar slot management, spell procs, diminishing returns, assisted combat, and global spell functions.

Source of truth: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API#Spell SpellBook: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API#SpellBook ActionBar: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API#ActionBar Current as of: Patch 12.0.0 (Build 65655) — January 28, 2026 Scope: Retail only. No deprecated or removed functions.

Scope

This skill covers these API systems:

C_Spell — Core spell information, cooldowns, charges, usability, range, type checks
C_SpellBook — Spellbook navigation, skill lines, slot queries, spell lookup
C_ActionBar — Action bar slot management, state queries, bar pages, overrides
C_SpellActivationOverlay — Spell proc/activation glow detection
C_SpellDiminish — Diminishing returns tracking for crowd control
C_CooldownViewer — Cooldown viewer categories and layout
C_AssistedCombat — Assisted combat (rotation helper) integration
Totem — Totem query functions (GetTotemInfo, DestroyTotem)
Shapeshifting — Form/stance functions (GetShapeshiftForm, GetShapeshiftFormInfo)
Global Spell Functions — CastSpellByName, CastSpellByID, SpellIsTargeting, etc.

When to Use This Skill

Use this skill when you need to:

Query spell info: name, description, icon, subtext, link, power cost
Check spell cooldowns, charges, or GCD state
Determine if a spell is usable, in range, or on cooldown
Navigate the spellbook: enumerate skill lines, find spell slots, check known spells
Manage action bars: query action type, usability, cooldown, texture for a slot
Detect action bar pages, bonus bars, override bars, vehicle bars
Check for spell procs / activation overlays (glowing buttons)
Track diminishing returns on crowd control effects
Query totem state, duration, or destroy totems
Check or cast shapeshift forms and stances
Cast spells programmatically (protected functions)
Handle spell targeting (SpellIsTargeting, SpellTargetUnit, SpellStopCasting)
Use the assisted combat (rotation helper) system
Work with flyout menus and multi-cast totem spells

Reference Files

Reference	Contents
SPELLS-CORE.md	C_Spell — spell info, cooldowns, charges, usability, range, type checks
SPELLBOOK.md	C_SpellBook — spellbook navigation, skill lines, slot queries
ACTIONBAR.md	C_ActionBar — action bar slots, state, pages, overrides, pet/vehicle bars
COOLDOWNS-CASTING.md	Cooldowns, casting functions, spell targeting, procs, DR, assisted combat
TOTEM-SHAPESHIFT.md	Totem functions, shapeshifting/stances, global spell casting functions

C_Spell — Core Spell API (Quick Reference)

The C_Spell namespace provides direct access to spell data by spellIdentifier — which can be a spellID (number) or spellName (string).

Wiki: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API#Spell

Key Functions

Function	Returns	Description
`C_Spell.GetSpellInfo(spellIdentifier)`	`spellInfo` table	Primary spell data (name, icon, castTime, etc.)
`C_Spell.GetSpellName(spellIdentifier)`	`name`	Localized spell name
`C_Spell.GetSpellDescription(spellIdentifier)`	`description`	Tooltip description text
`C_Spell.GetSpellTexture(spellIdentifier)`	`iconID, originalIconID`	Spell icon texture
`C_Spell.GetSpellSubtext(spellIdentifier)`	`subtext`	Rank or specialization label
`C_Spell.GetSpellLink(spellIdentifier [, glyphID])`	`spellLink`	Clickable hyperlink
`C_Spell.DoesSpellExist(spellIdentifier)`	`spellExists`	Validates a spell ID/name
`C_Spell.GetSpellIDForSpellIdentifier(spellIdentifier)`	`spellID`	Resolves spell name → ID
`C_Spell.GetBaseSpell(spellIdentifier [, spec])`	`baseSpellID`	Unwraps overrides to base spell
`C_Spell.GetOverrideSpell(spellIdentifier [, spec [, onlyKnown [, ignoreOverrideID]]])`	`overrideSpellID`	Gets current override for a spell

Cooldowns & Charges

Function	Returns	Description
`C_Spell.GetSpellCooldown(spellIdentifier)`	`spellCooldownInfo`	Start time, duration, enabled, modRate
`C_Spell.GetSpellCooldownDuration(spellIdentifier)`	`duration`	Remaining cooldown in seconds
`C_Spell.GetSpellCharges(spellIdentifier)`	`chargeInfo`	Charges, maxCharges, start, duration
`C_Spell.GetSpellChargeDuration(spellIdentifier)`	`duration`	Charge recharge duration
`C_Spell.GetSpellLossOfControlCooldown(spellIdentifier)`	`startTime, duration`	LoC lockout timing
`C_Spell.GetSpellLossOfControlCooldownDuration(spellIdentifier)`	`duration`	Remaining LoC duration

Usability & Range

Function	Returns	Description
`C_Spell.IsSpellUsable(spellIdentifier)`	`isUsable, insufficientPower`	Can be cast now?
`C_Spell.IsSpellInRange(spellIdentifier [, targetUnit])`	`inRange`	Target in range?
`C_Spell.SpellHasRange(spellIdentifier)`	`hasRange`	Does the spell have range?
`C_Spell.IsSpellDisabled(spellIdentifier)`	`disabled`	Is spell disabled?
`C_Spell.GetSpellCastCount(spellIdentifier)`	`castCount`	Number of available casts

Type Checks

Function	Returns	Description
`C_Spell.IsSpellPassive(spellIdentifier)`	`isPassive`	Passive ability?
`C_Spell.IsSpellHarmful(spellIdentifier)`	`isHarmful`	Offensive spell?
`C_Spell.IsSpellHelpful(spellIdentifier)`	`isHelpful`	Beneficial spell?
`C_Spell.IsAutoAttackSpell(spellIdentifier)`	`isAutoAttack`	Auto-attack?
`C_Spell.IsAutoRepeatSpell(spellIdentifier)`	`isAutoRepeat`	Auto-repeat (e.g., Auto Shot)?
`C_Spell.IsRangedAutoAttackSpell(spellIdentifier)`	`isRangedAutoAttack`	Ranged auto-attack?
`C_Spell.IsCurrentSpell(spellIdentifier)`	`isCurrentSpell`	Currently being cast?
`C_Spell.IsConsumableSpell(spellIdentifier)`	`consumable`	Consumes a resource on use?
`C_Spell.IsPressHoldReleaseSpell(spellIdentifier)`	`isPressHoldRelease`	Empowered spell?
`C_Spell.IsClassTalentSpell(spellIdentifier)`	`isClassTalent`	From the talent tree?
`C_Spell.IsPvPTalentSpell(spellIdentifier)`	`isPvPTalent`	PvP talent?
`C_Spell.IsSpellCrowdControl(spellIdentifier)`	`isCrowdControl`	CC effect?
`C_Spell.IsSpellImportant(spellIdentifier)`	`isImportant`	Marked as important?
`C_Spell.IsPriorityAura(spellID)`	`isHighPriority`	High-priority display aura?
`C_Spell.IsSelfBuff(spellID)`	`hasSelfEffectsOnly`	Only affects self?
`C_Spell.IsExternalDefensive(spellID)`	`isExternalDefensive`	External defensive?

Power Cost & Data

Function	Returns	Description
`C_Spell.GetSpellPowerCost(spellIdentifier)`	`powerCosts` table	Resources required to cast
`C_Spell.GetSpellLevelLearned(spellIdentifier)`	`levelLearned`	Level at which spell is learned
`C_Spell.GetSpellSkillLineAbilityRank(spellIdentifier)`	`rank`	Rank for profession recipes
`C_Spell.GetSpellMaxCumulativeAuraApplications(spellID)`	`cumulativeAura`	Max stacks
`C_Spell.GetAuraStatChanges(spellID)`	`healthChange, powerTypeChanges`	Stat effects of an aura
`C_Spell.GetDeadlyDebuffInfo(spellIdentifier)`	`deadlyDebuffInfo`	Deadly debuff display data
`C_Spell.GetSpellQueueWindow()`	`result`	Spell queue window (ms)

Spell Manipulation

Function	Returns	Description
`C_Spell.CancelSpellByID(spellID)`	—	Cancel a channeled/cast spell
`C_Spell.PickupSpell(spellIdentifier)`	—	Attach spell to cursor
`C_Spell.RequestLoadSpellData(spellIdentifier)`	—	Request async spell data load
`C_Spell.IsSpellDataCached(spellIdentifier)`	`isCached`	Is data ready for query?
`C_Spell.EnableSpellRangeCheck(spellIdentifier, enable)`	—	Enable/disable range checking
`C_Spell.SetSpellAutoCastEnabled(spellIdentifier, enabled)`	—	Toggle pet spell autocast
`C_Spell.ToggleSpellAutoCast(spellIdentifier)`	—	Toggle pet spell autocast
`C_Spell.GetSpellAutoCast(spellIdentifier)`	`autoCastAllowed, autoCastEnabled`	Autocast state

Visibility & Display

Function	Returns	Description
`C_Spell.GetVisibilityInfo(spellID, visibilityType)`	`hasCustom, alwaysShowMine, showForMySpec`	Aura display visibility rules
`C_Spell.GetSpellDisplayCount(spellIdentifier [, maxDisplayCount [, replacementString]])`	`displayCount`	Display count for stacking

Targeting & Trade

Function	Returns	Description
`C_Spell.TargetSpellIsEnchanting()`	`isEnchanting`	Current targeting spell is enchant?
`C_Spell.TargetSpellJumpsUpgradeTrack()`	`jumpsUpgradeTrack`	Upgrade track jump?
`C_Spell.TargetSpellReplacesBonusTree()`	`result`	Replaces bonus loot tree?
`C_Spell.GetSpellTradeSkillLink(spellIdentifier)`	`spellLink`	Trade skill recipe link

C_SpellBook — Spellbook Navigation (Quick Reference)

The C_SpellBook namespace manages the spellbook UI, skill lines, and per-slot queries. Functions take (spellBookItemSlotIndex, spellBookItemSpellBank) where spellBank is Enum.SpellBookSpellBank.Player or Enum.SpellBookSpellBank.Pet.

Wiki: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API#SpellBook

Key Functions

Function	Returns	Description
`C_SpellBook.GetNumSpellBookSkillLines()`	`numSkillLines`	Number of spellbook tabs
`C_SpellBook.GetSpellBookSkillLineInfo(skillLineIndex)`	`skillLineInfo`	Tab name, icon, offset, count
`C_SpellBook.GetSpellBookItemInfo(slot, bank)`	`spellBookItemInfo`	Detailed spell/flyout info for a slot
`C_SpellBook.GetSpellBookItemType(slot, bank)`	`itemType, actionID, spellID`	Type: SPELL, FLYOUT, FUTURESPELL, PETACTION
`C_SpellBook.GetSpellBookItemName(slot, bank)`	`name, subName`	Localized name of slot
`C_SpellBook.GetSpellBookItemTexture(slot, bank)`	`iconID`	Icon for slot
`C_SpellBook.GetSpellBookItemDescription(slot, bank)`	`description`	Tooltip text
`C_SpellBook.GetSpellBookItemLink(slot, bank [, glyphID])`	`spellLink`	Hyperlink
`C_SpellBook.GetSpellBookItemLevelLearned(slot, bank)`	`levelLearned`	Level learned
`C_SpellBook.FindSpellBookSlotForSpell(spellIdentifier [, includeHidden [, includeFlyouts [, includeFutureSpells [, includeOffSpec]]]])`	`slotIndex, bank`	Find slot for a spell
`C_SpellBook.IsSpellKnown(spellID [, spellBank])`	`isKnown`	Does the player know the spell?
`C_SpellBook.IsSpellInSpellBook(spellID [, spellBank [, includeOverrides]])`	`isInSpellBook`	Is it in the spellbook?
`C_SpellBook.IsSpellKnownOrInSpellBook(spellID [, spellBank [, includeOverrides]])`	`isKnownOrInSpellBook`	Known OR in spellbook?

Slot Usability & State

Function	Returns	Description
`C_SpellBook.IsSpellBookItemUsable(slot, bank)`	`isUsable, insufficientPower`	Can cast from this slot?
`C_SpellBook.IsSpellBookItemPassive(slot, bank)`	`isPassive`	Passive ability?
`C_SpellBook.IsSpellBookItemOffSpec(slot, bank)`	`isOffSpec`	Belongs to inactive spec?
`C_SpellBook.IsSpellBookItemHarmful(slot, bank)`	`isHarmful`	Harmful to targets?
`C_SpellBook.IsSpellBookItemHelpful(slot, bank)`	`isHelpful`	Helpful to targets?
`C_SpellBook.IsSpellBookItemInRange(slot, bank [, targetUnit])`	`inRange`	In range of target?
`C_SpellBook.SpellBookItemHasRange(slot, bank)`	`hasRange`	Has range requirement?
`C_SpellBook.IsAutoAttackSpellBookItem(slot, bank)`	`isAutoAttack`	Auto-attack entry?
`C_SpellBook.IsRangedAutoAttackSpellBookItem(slot, bank)`	`isRangedAutoAttack`	Ranged auto-attack?
`C_SpellBook.IsClassTalentSpellBookItem(slot, bank)`	`isClassTalent`	Class talent?
`C_SpellBook.IsPvPTalentSpellBookItem(slot, bank)`	`isPvPTalent`	PvP talent?

Slot Cooldowns & Charges

Function	Returns	Description
`C_SpellBook.GetSpellBookItemCooldown(slot, bank)`	`spellCooldownInfo`	Cooldown for slot
`C_SpellBook.GetSpellBookItemCooldownDuration(slot, bank)`	`duration`	Remaining cooldown
`C_SpellBook.GetSpellBookItemCharges(slot, bank)`	`chargeInfo`	Charge info
`C_SpellBook.GetSpellBookItemChargeDuration(slot, bank)`	`duration`	Charge recharge time
`C_SpellBook.GetSpellBookItemCastCount(slot, bank)`	`castCount`	Available casts
`C_SpellBook.GetSpellBookItemLossOfControlCooldown(slot, bank)`	`startTime, duration`	LoC lockout
`C_SpellBook.GetSpellBookItemLossOfControlCooldownDuration(slot, bank)`	`duration`	Remaining LoC

Spell Lookup

Function	Returns	Description
`C_SpellBook.FindBaseSpellByID(spellID)`	`baseSpellID`	Resolve to base spell
`C_SpellBook.FindSpellOverrideByID(spellID)`	`overrideSpellID`	Get current override
`C_SpellBook.GetCurrentLevelSpells(level)`	`spellIDs`	Spells learned at a level
`C_SpellBook.GetSkillLineIndexByID(skillLineID)`	`skillIndex`	Skill line index by ID
`C_SpellBook.HasPetSpells()`	`numPetSpells, petNameToken`	Does the pet have spells?
`C_SpellBook.ContainsAnyDisenchantSpell()`	`contains`	Has disenchant?
`C_SpellBook.FindFlyoutSlotBySpellID(spellID)`	`flyoutSlot`	Find flyout containing spell

Other Slot Operations

Function	Returns	Description
`C_SpellBook.CastSpellBookItem(slot, bank [, targetSelf])`	—	Cast from spellbook slot
`C_SpellBook.PickupSpellBookItem(slot, bank)`	—	Pick up spell to cursor
`C_SpellBook.GetSpellBookItemAutoCast(slot, bank)`	`autoCastAllowed, autoCastEnabled`	Autocast state
`C_SpellBook.SetSpellBookItemAutoCastEnabled(slot, bank, enabled)`	—	Set autocast
`C_SpellBook.ToggleSpellBookItemAutoCast(slot, bank)`	—	Toggle autocast
`C_SpellBook.GetSpellBookItemPowerCost(slot, bank)`	`powerCosts`	Resource cost
`C_SpellBook.GetSpellBookItemTradeSkillLink(slot, bank)`	`spellLink`	Trade skill link
`C_SpellBook.GetSpellBookItemSkillLineIndex(slot, bank)`	`skillLineIndex`	Which skill line tab

C_ActionBar — Action Bar Slot Management (Quick Reference)

The C_ActionBar namespace manages the 120+ action bar slots. Actions are referenced by actionID (1–180) or slotID.

Wiki: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API#ActionBar

Action Slot Layout

Bar	Slots	Notes
Main bar	1–12	Always visible
Bar 2 (Bottom Left)	13–24	Toggled via settings
Bar 3 (Bottom Right)	25–36	Toggled via settings
Bar 4 (Right)	37–48	Toggled via settings
Bar 5 (Right 2)	49–60	Toggled via settings
Bars 6–10	61–120	Additional bars
StanceBar pages	121–180	Stance-specific bars

Core Queries

Function	Returns	Description
`C_ActionBar.HasAction(actionID)`	`hasAction`	Is something in this slot?
`C_ActionBar.GetSpell(actionID)`	`spellID`	Spell in slot (nil if not a spell)
`C_ActionBar.GetActionTexture(actionID)`	`textureFileID`	Icon for the action
`C_ActionBar.GetActionText(actionID)`	`text`	Display text (macros)
`C_ActionBar.GetActionCooldown(actionID)`	`cooldownInfo`	Cooldown data
`C_ActionBar.GetActionCooldownDuration(actionID)`	`duration`	Remaining cooldown
`C_ActionBar.GetActionChargeDuration(actionID)`	`duration`	Charge recharge time
`C_ActionBar.GetActionCharges(actionID)`	`chargeInfo`	Charge state
`C_ActionBar.IsUsableAction(actionID)`	`isUsable, isLackingResources`	Can use?
`C_ActionBar.IsActionInRange(actionID [, target])`	`isInRange`	Target in range?

Action State Checks

Function	Returns	Description
`C_ActionBar.IsCurrentAction(actionID)`	`isCurrentAction`	Being cast now?
`C_ActionBar.IsAttackAction(actionID)`	`isAttackAction`	Auto-attack?
`C_ActionBar.IsAutoRepeatAction(actionID)`	`isAutoRepeatAction`	Auto-repeat?
`C_ActionBar.IsConsumableAction(actionID)`	`isConsumableAction`	Consumable?
`C_ActionBar.IsEquippedAction(actionID)`	`isEquippedAction`	Equipped item?
`C_ActionBar.IsStackableAction(actionID)`	`isStackableAction`	Stackable item?
`C_ActionBar.IsItemAction(actionID)`	`isItemAction`	Item action?
`C_ActionBar.IsHarmfulAction(actionID, useNeutral)`	`isHarmful`	Harmful?
`C_ActionBar.IsHelpfulAction(actionID, useNeutral)`	`isHelpful`	Helpful?
`C_ActionBar.IsInterruptAction(slotID)`	`isInterruptAction`	Interrupt?
`C_ActionBar.IsAssistedCombatAction(slotID)`	`isAssistedCombat`	Assisted combat action?
`C_ActionBar.HasRangeRequirements(actionID)`	`hasRangeRequirements`	Has range?

Bar Pages & Overrides

Function	Returns	Description
`C_ActionBar.GetActionBarPage()`	`currentPage`	Current page (1–6)
`C_ActionBar.SetActionBarPage(pageIndex)`	—	Switch page
`C_ActionBar.GetBonusBarIndex()`	`bonusBarIndex`	Class-specific bonus bar
`C_ActionBar.GetBonusBarOffset()`	`bonusBarOffset`	Offset for bonus bar
`C_ActionBar.HasBonusActionBar()`	`hasBonusActionBar`	Has bonus bar?
`C_ActionBar.GetOverrideBarIndex()`	`overrideBarIndex`	Override bar index
`C_ActionBar.GetOverrideBarSkin()`	`textureFileID`	Override bar texture
`C_ActionBar.HasOverrideActionBar()`	`hasOverrideActionBar`	Override active?
`C_ActionBar.GetExtraBarIndex()`	`extraBarIndex`	Extra action button bar
`C_ActionBar.HasExtraActionBar()`	`hasExtraActionBar`	Extra bar active?
`C_ActionBar.GetVehicleBarIndex()`	`vehicleBarIndex`	Vehicle bar index
`C_ActionBar.HasVehicleActionBar()`	`hasVehicleActionBar`	In vehicle?
`C_ActionBar.GetTempShapeshiftBarIndex()`	`tempShapeshiftBarIndex`	Temp shapeshift bar
`C_ActionBar.HasTempShapeshiftActionBar()`	`hasTempShapeshiftActionBar`	Has temp form bar?
`C_ActionBar.GetMultiCastBarIndex()`	`multiCastBarIndex`	Multi-cast bar (totem)
`C_ActionBar.ShouldOverrideBarShowHealthBar()`	`showHealthBar`	Show health bar?
`C_ActionBar.ShouldOverrideBarShowManaBar()`	`showManaBar`	Show mana bar?
`C_ActionBar.IsPossessBarVisible()`	`isPossessBarVisible`	Possess bar visible?

Display & Count

Function	Returns	Description
`C_ActionBar.GetActionDisplayCount(actionID [, maxDisplayCount [, replacementString]])`	`displayCount`	Display count for stacking
`C_ActionBar.GetActionUseCount(actionID)`	`count`	Remaining uses
`C_ActionBar.GetActionAutocast(actionID)`	`autoCastAllowed, autoCastEnabled`	Autocast state
`C_ActionBar.GetActionLossOfControlCooldown(actionID)`	`startTime, duration`	LoC cooldown
`C_ActionBar.GetActionLossOfControlCooldownDuration(actionID)`	`duration`	Remaining LoC

Spell ↔ Action Lookups

Function	Returns	Description
`C_ActionBar.FindSpellActionButtons(spellID)`	`slots`	Find all slots containing a spell
`C_ActionBar.HasSpellActionButtons(spellID)`	`hasButtons`	Is spell on any bar?
`C_ActionBar.IsOnBarOrSpecialBar(spellID)`	`isOnBar`	On any bar or special bar?
`C_ActionBar.FindFlyoutActionButtons(flyoutID)`	`slots`	Find flyout button slots
`C_ActionBar.HasFlyoutActionButtons(flyoutID)`	`hasFlyoutButtons`	Flyout on bar?
`C_ActionBar.FindPetActionButtons(petActionID)`	`slots`	Pet action on bar?
`C_ActionBar.HasPetActionButtons(petActionID)`	`hasPetButtons`	Pet action exists?
`C_ActionBar.FindAssistedCombatActionButtons()`	`slots`	Assisted combat slots
`C_ActionBar.HasAssistedCombatActionButtons()`	`hasButtons`	Has assisted combat?
`C_ActionBar.GetPetActionPetBarIndices(petActionID)`	`slots`	Pet bar indices
`C_ActionBar.HasPetActionPetBarIndices(petActionID)`	`hasIndices`	Has pet bar indices?

Profession & Gear

Function	Returns	Description
`C_ActionBar.GetProfessionQuality(actionID)`	`quality`	Crafting result quality
`C_ActionBar.GetProfessionQualityInfo(actionID)`	`info`	Quality info table
`C_ActionBar.GetItemActionOnEquipSpellID(actionID)`	`onEquipSpellID`	On-equip spell ID
`C_ActionBar.IsEquippedGearOutfitAction(slotID)`	`isEquipped`	Gear outfit equipped?
`C_ActionBar.GetBonusBarIndexForSlot(slotID)`	`bonusBarIndex`	Bonus bar for slot

Slot Management

Function	Returns	Description
`C_ActionBar.PutActionInSlot(slotID)`	—	Place cursor action into slot
`C_ActionBar.RegisterActionUIButton(checkboxFrame, actionID, cooldownFrame)`	—	Register frame for updates
`C_ActionBar.UnregisterActionUIButton(checkboxFrame)`	—	Unregister frame
`C_ActionBar.ForceUpdateAction(slotID)`	—	Force action update
`C_ActionBar.EnableActionRangeCheck(actionID, enable)`	—	Enable/disable range check
`C_ActionBar.ToggleAutoCastPetAction(slotID)`	—	Toggle pet autocast
`C_ActionBar.IsAutoCastPetAction(slotID)`	`isAutoCastPetAction`	Pet autocast?
`C_ActionBar.IsEnabledAutoCastPetAction(slotID)`	`isEnabled`	Pet autocast enabled?

Auxiliary Namespaces (Quick Reference)

C_SpellActivationOverlay — Spell Procs

Detects when a spell has a visual activation overlay (glowing border / proc alert).

Function	Returns	Description
`C_SpellActivationOverlay.IsSpellOverlayed(spellID)`	`isOverlayed`	Spell has active proc glow?

Wiki: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API#SpellActivationOverlay

C_SpellDiminish — Diminishing Returns

Tracks diminishing returns (DR) categories for crowd control and interrupt tracking.

Function	Returns	Description
`C_SpellDiminish.GetAllSpellDiminishCategories([ruleset])`	`categories`	All DR categories
`C_SpellDiminish.GetSpellDiminishCategoryInfo(category)`	`categoryInfo`	Info for a DR category
`C_SpellDiminish.IsSystemSupported()`	`isSupported`	Is DR tracking available?
`C_SpellDiminish.ShouldTrackSpellDiminishCategory(category, ruleset)`	`isTracked`	Should this category be tracked?

Wiki: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API#SpellDiminishUI

C_CooldownViewer — Cooldown Display

Provides categorized cooldown data for the cooldown viewer UI.

Function	Returns	Description
`C_CooldownViewer.GetCooldownViewerCategorySet(category [, allowUnlearned])`	`cooldownIDs`	Cooldowns in a category
`C_CooldownViewer.GetCooldownViewerCooldownInfo(cooldownID)`	`cooldownInfo`	Cooldown details
`C_CooldownViewer.GetLayoutData()`	`data`	Viewer layout state
`C_CooldownViewer.GetValidAlertTypes(cooldownID)`	`validAlertTypes`	Valid alert types for cooldown
`C_CooldownViewer.IsCooldownViewerAvailable()`	`isAvailable, failureReason`	Is viewer available?
`C_CooldownViewer.SetLayoutData(data)`	—	Save layout state

Wiki: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API#CooldownViewer

C_AssistedCombat — Rotation Helper

The Assisted Combat system (new in 12.0) provides suggested spell rotations.

Function	Returns	Description
`C_AssistedCombat.GetActionSpell()`	`spellID`	Current action spell suggestion
`C_AssistedCombat.GetNextCastSpell([checkForVisibleButton])`	`spellID`	Next suggested cast
`C_AssistedCombat.GetRotationSpells()`	`spellIDs`	All rotation spells
`C_AssistedCombat.IsAvailable()`	`isAvailable, failureReason`	Is system available?

Wiki: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API#AssistedCombat

C_LevelLink — Spell Level Lock

Checks if spells or actions are level-locked for scaling content.

Function	Returns	Description
`C_LevelLink.IsActionLocked(actionID)`	`isLocked`	Action locked by level?
`C_LevelLink.IsSpellLocked(spellID)`	`isLocked`	Spell locked by level?

Totem Functions

Totem functions query and manage totem/minion slots. Shamans have 4 totem slots; other classes may have totem-style minions (e.g., Death Knight ghouls, mushrooms).

Wiki: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API#Totem

Function	Returns	Description
`GetTotemInfo(slot)`	`haveTotem, totemName, startTime, duration, icon, modRate, spellID`	Complete totem info
`GetTotemTimeLeft(slot)`	`timeLeft`	Remaining duration (seconds)
`GetTotemCannotDismiss(slot)`	`cannotDismiss`	Can this totem be dismissed?
`DestroyTotem(slot)`	—	Destroy totem/minion `#protected`
`TargetTotem(slot)`	—	Target the totem

totem Slot Constants

EARTH_TOTEM_SLOT  = 2
FIRE_TOTEM_SLOT   = 1
WATER_TOTEM_SLOT  = 3
AIR_TOTEM_SLOT    = 4

Shapeshifting / Stances

Manages shapeshift forms (Druid forms, Warrior stances, Rogue stealth, Paladin auras, etc.).

Wiki: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API#Shapeshifting
Category: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API (Shapeshifting section)

Function	Returns	Description
`GetNumShapeshiftForms()`	`numForms`	Number of available forms
`GetShapeshiftForm([flag])`	`index`	Current form (0 = none)
`GetShapeshiftFormID()`	`index`	Form ID of current form
`GetShapeshiftFormInfo(index)`	`icon, active, castable, spellID`	Info for a form
`GetShapeshiftFormCooldown(index)`	`startTime, duration, isActive`	Cooldown for a form
`CancelShapeshiftForm()`	—	Leave current form `#protected`
`CastShapeshiftForm(index)`	—	Enter a form `#protected`

Global Spell Casting Functions

These are category-level functions (not namespaced) for casting, targeting, and confirming spells.

Wiki: https://warcraft.wiki.gg/wiki/World_of_Warcraft_API (Spells category)

Casting (Protected)

Function	Description
`CastSpell(spellIndex, spellbookType)`	Cast from spellbook by index `#protected`
`CastSpellByID(spellID [, target])`	Cast by spell ID `#protected`
`CastSpellByName(name [, target])`	Cast by name `#protected`
`UseAction(slot [, checkCursor [, onSelf]])`	Use action bar slot `#protected`
`SpellStopCasting()`	Stop current cast `#protected`

Targeting (Protected)

Function	Description
`SpellIsTargeting()`	Is a spell waiting for target selection?
`SpellCanTargetUnit(unit)`	Can the pending spell target this unit?
`SpellTargetUnit(unit)`	Cast pending spell on unit `#protected`
`SpellStopTargeting()`	Cancel pending spell targeting `#protected`
`SpellTargetItem(item)`	Cast pending spell on item `#protected`
`SpellCanTargetItem()`	Can pending spell target an item?
`SpellCanTargetItemID()`	Can pending spell target an item ID?
`SpellCanTargetQuest()`	Can pending spell target a quest?
`SpellCancelQueuedSpell()`	Cancel queued spell
`CancelSpellByName(name)`	Cancel channeling by name `#nocombat`

Spell Confirmation

Function	Description
`AcceptSpellConfirmationPrompt(spellID)`	Accept a spell confirmation dialog
`DeclineSpellConfirmationPrompt(spellID)`	Decline a spell confirmation dialog
`GetSpellConfirmationPromptsInfo()`	Get pending confirmations

Action Button Helpers

Function	Returns	Description
`GetActionInfo(slot)`	`actionType, id, subType`	What's in this action slot?
`GetActionBarToggles()`	`bar1..bar7`	Which extra bars are visible
`SetActionBarToggles(bar1..bar7, alwaysShow)`	—	Set visibility of extra bars
`PetHasActionBar()`	`hasActionBar`	Does pet have an action bar?
`GetPossessInfo(index)`	`texture, spellID, enabled`	Possession bar info

Flyouts

Function	Returns	Description
`GetFlyoutInfo(flyoutID)`	`name, description, numSlots, isKnown`	Flyout menu info
`GetFlyoutSlotInfo(flyoutID, slot)`	`flyoutSpellID, overrideSpellID, isKnown, spellName, slotSpecID`	Individual flyout slot
`FlyoutHasSpell(flyoutID, spellID)`	`hasSpell`	Does flyout contain spell?
`GetNumFlyouts()`	count	Total flyout count
`FindSpellBookSlotBySpellID(spellID [, isPet])`	slot	Legacy slot lookup

Combat Pet Actions

Function	Returns	Description
`CastPetAction(index [, target])`	—	Cast pet action `#protected`
`GetPetActionCooldown(index)`	`startTime, duration, enable`	Pet action cooldown
`GetPetActionInfo(index)`	`name, texture, isToken, isActive, autoCastAllowed, autoCastEnabled, spellID, checksRange, inRange`	Full pet action info
`GetPetActionSlotUsable(index)`	`isUsable`	Can use this pet action?

Multi-Cast / Totem Bar

Function	Returns	Description
`GetMultiCastTotemSpells(slot)`	`totem1..totem7`	Valid spells for a totem slot
`SetMultiCastSpell(actionID, spellID)`	—	Set totem bar spell `#protected`

Misc Spell Helpers

Function	Returns	Description
`GetSpellBaseCooldown(spellID)`	`cooldownMS, gcdMS`	Base cooldown in milliseconds
`IsSelectedSpellBookItem(spellSlot)`	bool	Is this slot selected?
`CancelUnitBuff(unit, buffIndex [, filter])`	—	Remove a buff `#nocombat`
`QueryCastSequence(sequence)`	index, item, spell	Preview next step in /castsequence

Patch 12.0.0 — Secret Values Impact

Spell-related APIs are significantly affected by Secret Values in Patch 12.0.0:

C_Secrets Predicates for Spells

Function	Returns	Description
`C_Secrets.GetSpellCastSecrecy(spellIdentifier)`	`secrecy`	Cast info secret level
`C_Secrets.GetSpellCooldownSecrecy(spellIdentifier)`	`secrecy`	Cooldown data secret level
`C_Secrets.GetSpellAuraSecrecy(spellIdentifier)`	`secrecy`	Aura data secret level
`C_Secrets.ShouldCooldownsBeSecret()`	`hasSecretCooldowns`	Any cooldowns secret?
`C_Secrets.ShouldSpellCooldownBeSecret(spellIdentifier)`	`isCooldownSecret`	This spell's CD secret?
`C_Secrets.ShouldSpellAuraBeSecret(spellIdentifier)`	`isAuraSecret`	This spell's aura secret?
`C_Secrets.ShouldSpellBookItemCooldownBeSecret(slot, bank)`	`isCooldownSecret`	Spellbook slot CD secret?
`C_Secrets.ShouldActionCooldownBeSecret(actionID)`	`isCooldownSecret`	Action slot CD secret?
`C_Secrets.ShouldTotemSlotBeSecret(slot)`	`isTotemSecret`	Totem info secret?
`C_Secrets.ShouldTotemSpellBeSecret(spellID)`	`isTotemSecret`	Specific totem spell secret?
`C_Secrets.ShouldUnitSpellCastBeSecret(unit, spellIdentifier)`	`isSpellCastSecret`	Cast info secret?
`C_Secrets.ShouldUnitSpellCastingBeSecret(unit)`	`isSpellCastingSecret`	All cast info for unit secret?

What Returns Secrets

Cooldown times — C_Spell.GetSpellCooldown() may return secret start/duration when C_Secrets.ShouldSpellCooldownBeSecret() is true
Spell cast info — UnitCastingInfo() / UnitChannelInfo() return secret fields when unit identity is restricted
Totem info — GetTotemInfo() may return secret startTime/duration when the totem spell is secret

Safe Patterns

-- Safe: Pass cooldown secrets directly to Cooldown widget
local cdInfo = C_Spell.GetSpellCooldown(spellID)
myCooldownFrame:SetCooldown(cdInfo.startTime, cdInfo.duration)

-- Safe: Display spell name (concatenation works with secrets)
local name = C_Spell.GetSpellName(spellID)
myFontString:SetText(name)

-- UNSAFE: Cannot branch on cooldown values
local cdInfo = C_Spell.GetSpellCooldown(spellID)
if cdInfo.duration > 0 then end  -- ERROR if duration is secret

Common Patterns

Iterate All Spellbook Entries

local numLines = C_SpellBook.GetNumSpellBookSkillLines()
for skillIndex = 1, numLines do
    local info = C_SpellBook.GetSpellBookSkillLineInfo(skillIndex)
    for slotIndex = info.itemIndexOffset + 1, info.itemIndexOffset + info.numSpellBookItems do
        local itemInfo = C_SpellBook.GetSpellBookItemInfo(slotIndex, Enum.SpellBookSpellBank.Player)
        if itemInfo and itemInfo.itemType == Enum.SpellBookItemType.Spell then
            print(itemInfo.name, itemInfo.spellID)
        end
    end
end

Check If Spell Is Usable and in Range

local function CanCastOnTarget(spellID, unit)
    local isUsable, insufficientPower = C_Spell.IsSpellUsable(spellID)
    if not isUsable then return false, insufficientPower end

    if C_Spell.SpellHasRange(spellID) then
        local inRange = C_Spell.IsSpellInRange(spellID, unit)
        if inRange == false then return false end
    end

    local cdInfo = C_Spell.GetSpellCooldown(spellID)
    -- Note: cdInfo.duration may be a secret value in 12.0
    -- Cannot branch on it — pass to Cooldown widget instead
    return true
end

Display Action Button State

local function UpdateActionButton(button, actionID)
    if not C_ActionBar.HasAction(actionID) then
        button:Hide()
        return
    end

    button.icon:SetTexture(C_ActionBar.GetActionTexture(actionID))

    local isUsable, noMana = C_ActionBar.IsUsableAction(actionID)
    if isUsable then
        button.icon:SetVertexColor(1, 1, 1)
    elseif noMana then
        button.icon:SetVertexColor(0.5, 0.5, 1)
    else
        button.icon:SetVertexColor(0.4, 0.4, 0.4)
    end

    -- Use activation overlay for proc detection
    if C_SpellActivationOverlay.IsSpellOverlayed(C_ActionBar.GetSpell(actionID)) then
        button.overlay:Show()
    else
        button.overlay:Hide()
    end
end

Monitor Totem State

local function UpdateTotemFrame(slot)
    local haveTotem, name, startTime, duration, icon, modRate, spellID = GetTotemInfo(slot)
    if haveTotem then
        -- startTime/duration may be secret in 12.0
        myTotemIcon:SetTexture(icon)
        myTotemCooldown:SetCooldown(startTime, duration)  -- Widget accepts secrets
        myTotemName:SetText(name)
    end
end

Query Shapeshift Forms

local function ShowAvailableForms()
    local numForms = GetNumShapeshiftForms()
    for i = 1, numForms do
        local icon, active, castable, spellID = GetShapeshiftFormInfo(i)
        print(C_Spell.GetSpellName(spellID), active and "(Active)" or "")
    end
end

Related Events

Event	Payload	When
`SPELL_DATA_LOAD_RESULT`	`spellID, success`	Async spell data load complete
`ACTIONBAR_SLOT_CHANGED`	`slot`	Action placed/removed from slot
`ACTIONBAR_PAGE_CHANGED`	—	Action bar page changed
`ACTIONBAR_UPDATE_COOLDOWN`	—	Action cooldown updated
`ACTIONBAR_UPDATE_USABLE`	—	Action usability changed
`ACTIONBAR_UPDATE_STATE`	—	Action state changed
`UPDATE_BONUS_ACTIONBAR`	—	Bonus bar changed (stance/form)
`UPDATE_EXTRA_ACTIONBAR`	—	Extra action button changed
`UPDATE_OVERRIDE_ACTIONBAR`	—	Override bar state changed
`UPDATE_VEHICLE_ACTIONBAR`	—	Vehicle bar changed
`UPDATE_POSSESS_BAR`	—	Possession bar changed
`SPELL_ACTIVATION_OVERLAY_SHOW`	`spellID, ...`	Proc overlay should show
`SPELL_ACTIVATION_OVERLAY_HIDE`	`spellID`	Proc overlay should hide
`SPELL_UPDATE_COOLDOWN`	—	Spell cooldowns changed
`SPELL_UPDATE_USABLE`	—	Spell usability changed
`SPELL_UPDATE_CHARGES`	—	Spell charges changed
`CURRENT_SPELL_CAST_CHANGED`	—	Current cast changed
`SPELLS_CHANGED`	—	Spellbook contents changed
`LEARNED_SPELL_IN_SKILL_LINE`	`spellID, skillLineIndex, isGuildPerkSpell`	New spell learned
`PLAYER_TOTEM_UPDATE`	`slot`	Totem state changed
`UPDATE_SHAPESHIFT_FORM`	—	Shapeshift form changed
`UPDATE_SHAPESHIFT_FORMS`	—	Available forms changed
`UPDATE_SHAPESHIFT_COOLDOWN`	—	Form cooldown changed
`SPELL_CONFIRMATION_PROMPT`	`spellID, confirmType, text, duration, currencyID, currencyCost, difficultyID`	Spell confirmation needed
`SPELL_CONFIRMATION_TIMEOUT`	`spellID`	Confirmation timed out
`PET_BAR_UPDATE`	—	Pet bar updated
`PET_BAR_UPDATE_COOLDOWN`	—	Pet action cooldown changed
`PET_BAR_UPDATE_USABLE`	—	Pet action usability changed
`ASSISTED_COMBAT_UPDATE`	—	Rotation helper suggestion changed
`COOLDOWN_VIEWER_UPDATE`	—	Cooldown viewer data changed
`SPELL_FLYOUT_UPDATE`	`flyoutID, spellID, isLearned`	Flyout spell learned/changed