diff --git a/src/controllers/api/focusController.ts b/src/controllers/api/focusController.ts
index f5d945fc..b2ac53f6 100644
--- a/src/controllers/api/focusController.ts
+++ b/src/controllers/api/focusController.ts
@@ -1,6 +1,149 @@
-import { Handler } from "express";
+import { RequestHandler } from "express";
+import { getAccountIdForRequest } from "@/src/services/loginService";
+import { getInventory, addMiscItems } from "@/src/services/inventoryService";
+import { IMiscItem, TFocusPolarity } from "@/src/types/inventoryTypes/inventoryTypes";
+import { logger } from "@/src/utils/logger";
+import baseFocusPointCosts from "@/static/json/baseFocusPointCosts.json";
 
-export const focusController: Handler = (_req, _res) => {
-    //console.log("focusController", req.query);
-    _res.sendStatus(400);
+export const focusController: RequestHandler = async (req, res) => {
+    const accountId = await getAccountIdForRequest(req);
+    switch (req.query.op) {
+        default:
+            logger.error("Unhandled focus op type: " + req.query.op);
+            logger.debug(req.body.toString());
+            res.end();
+            break;
+        case FocusOperation.UnlockWay: {
+            const focusType = (JSON.parse(req.body.toString()) as IWayRequest).FocusType;
+            const focusPolarity = focusTypeToPolarity(focusType);
+            const inventory = await getInventory(accountId);
+            const cost = inventory.FocusAbility ? 50_000 : 0;
+            inventory.FocusAbility ??= focusType;
+            inventory.FocusUpgrades.push({ ItemType: focusType });
+            if (inventory.FocusXP) {
+                inventory.FocusXP[focusPolarity] -= cost;
+            }
+            await inventory.save();
+            res.json({
+                FocusUpgrade: { ItemType: focusType },
+                FocusPointCosts: { [focusPolarity]: cost }
+            });
+            break;
+        }
+        case FocusOperation.ActivateWay: {
+            const focusType = (JSON.parse(req.body.toString()) as IWayRequest).FocusType;
+            const inventory = await getInventory(accountId);
+            inventory.FocusAbility = focusType;
+            await inventory.save();
+            res.end();
+            break;
+        }
+        case FocusOperation.UnlockUpgrade: {
+            const request = JSON.parse(req.body.toString()) as IUnlockUpgradeRequest;
+            const focusPolarity = focusTypeToPolarity(request.FocusTypes[0]);
+            const inventory = await getInventory(accountId);
+            let cost = 0;
+            for (const focusType of request.FocusTypes) {
+                cost += baseFocusPointCosts[focusType as keyof typeof baseFocusPointCosts];
+                inventory.FocusUpgrades.push({ ItemType: focusType, Level: 0 });
+            }
+            inventory.FocusXP[focusPolarity] -= cost;
+            await inventory.save();
+            res.json({
+                FocusTypes: request.FocusTypes,
+                FocusPointCosts: { [focusPolarity]: cost }
+            });
+            break;
+        }
+        case FocusOperation.LevelUpUpgrade: {
+            const request = JSON.parse(req.body.toString()) as ILevelUpUpgradeRequest;
+            const focusPolarity = focusTypeToPolarity(request.FocusInfos[0].ItemType);
+            const inventory = await getInventory(accountId);
+            let cost = 0;
+            for (const focusUpgrade of request.FocusInfos) {
+                cost += focusUpgrade.FocusXpCost;
+                const focusUpgradeDb = inventory.FocusUpgrades.find(entry => entry.ItemType == focusUpgrade.ItemType)!;
+                focusUpgradeDb.Level = focusUpgrade.Level;
+                if (focusUpgrade.IsUniversal) {
+                    focusUpgradeDb.IsUniversal = true;
+                }
+            }
+            inventory.FocusXP[focusPolarity] -= cost;
+            await inventory.save();
+            res.json({
+                FocusInfos: request.FocusInfos,
+                FocusPointCosts: { [focusPolarity]: cost }
+            });
+            break;
+        }
+        case FocusOperation.ConvertShard: {
+            const request = JSON.parse(req.body.toString()) as IConvertShardRequest;
+            // Tally XP
+            let xp = 0;
+            for (const shard of request.Shards) {
+                xp += shardValues[shard.ItemType as keyof typeof shardValues] * shard.ItemCount;
+            }
+            // Send response
+            res.json({
+                FocusPointGains: {
+                    [request.Polarity]: xp
+                },
+                MiscItemCosts: request.Shards
+            });
+            // Commit added XP and removed shards to DB
+            for (const shard of request.Shards) {
+                shard.ItemCount *= -1;
+            }
+            const inventory = await getInventory(accountId);
+            inventory.FocusXP ??= { AP_POWER: 0, AP_TACTIC: 0, AP_DEFENSE: 0, AP_ATTACK: 0, AP_WARD: 0 };
+            inventory.FocusXP[request.Polarity] += xp;
+            addMiscItems(inventory, request.Shards);
+            await inventory.save();
+            break;
+        }
+    }
+};
+
+enum FocusOperation {
+    UnlockWay = "2",
+    UnlockUpgrade = "3",
+    LevelUpUpgrade = "4",
+    ActivateWay = "5",
+    ConvertShard = "9"
+}
+
+// For UnlockWay & ActivateWay
+interface IWayRequest {
+    FocusType: string;
+}
+
+interface IUnlockUpgradeRequest {
+    FocusTypes: string[];
+}
+
+interface ILevelUpUpgradeRequest {
+    FocusInfos: {
+        ItemType: string;
+        FocusXpCost: number;
+        IsUniversal: boolean;
+        Level: number;
+        IsActiveAbility: boolean;
+    }[];
+}
+
+interface IConvertShardRequest {
+    Shards: IMiscItem[];
+    Polarity: TFocusPolarity;
+}
+
+// Works for ways & upgrades
+const focusTypeToPolarity = (type: string): TFocusPolarity => {
+    return ("AP_" + type.substr(1).split("/")[3].toUpperCase()) as TFocusPolarity;
+};
+
+const shardValues = {
+    "/Lotus/Types/Gameplay/Eidolon/Resources/SentientShards/SentientShardCommonItem": 2_500,
+    "/Lotus/Types/Gameplay/Eidolon/Resources/SentientShards/SentientShardSynthesizedItem": 5_000,
+    "/Lotus/Types/Gameplay/Eidolon/Resources/SentientShards/SentientShardBrilliantItem": 25_000,
+    "/Lotus/Types/Gameplay/Eidolon/Resources/SentientShards/SentientShardBrilliantTierTwoItem": 40_000
 };
diff --git a/src/types/inventoryTypes/inventoryTypes.ts b/src/types/inventoryTypes/inventoryTypes.ts
index 8bf01538..1173be27 100644
--- a/src/types/inventoryTypes/inventoryTypes.ts
+++ b/src/types/inventoryTypes/inventoryTypes.ts
@@ -553,6 +553,8 @@ export interface IFocusXP {
     AP_WARD: number;
 }
 
+export type TFocusPolarity = keyof IFocusXP;
+
 export interface IFusionTreasure {
     ItemCount: number;
     ItemType: string;
diff --git a/static/json/baseFocusPointCosts.json b/static/json/baseFocusPointCosts.json
new file mode 100644
index 00000000..5f69e30b
--- /dev/null
+++ b/static/json/baseFocusPointCosts.json
@@ -0,0 +1,82 @@
+{
+  "/Lotus/Upgrades/Focus/Attack/Active/AttackEfficiencyFocusUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Attack/Active/BlastChargeFocusUpgrade": 80000,
+  "/Lotus/Upgrades/Focus/Attack/Active/BlastFireballFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Attack/Active/CloakAttackChargeFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Attack/Active/CloakBlindFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Attack/Active/ConsecutiveEfficienyUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Attack/Active/ConsecutivePowerUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Attack/Active/DashDamageFocusUpgrade": 80000,
+  "/Lotus/Upgrades/Focus/Attack/Active/DashFireFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Attack/Active/GhostWaveUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Attack/Active/GhostlyTouchUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Attack/Residual/ElementalDamageFocusUpgrade": 25000,
+  "/Lotus/Upgrades/Focus/Attack/Residual/PhysicalDamageFocusUpgrade": 25000,
+  "/Lotus/Upgrades/Focus/Attack/Residual/PowerSnapFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Attack/Stats/MoreAmmoFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Attack/Stats/RegenAmmoFocusUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Defense/Active/BlastAllyShieldFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Defense/Active/BlastSelfShieldFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Defense/Active/CloakHealFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Defense/Active/CloakHealOthersFocusUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Defense/Active/CloakShieldFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Defense/Active/DashImmunityFocusUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Defense/Active/DashShockwaveFocusUpgrade": 80000,
+  "/Lotus/Upgrades/Focus/Defense/Active/DefenseShieldBreakFocusUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Defense/Active/DefenseShieldFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Defense/Active/SonicDissipationUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Defense/Residual/InstantReviveFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Defense/Residual/RadialXpFocusUpgrade": 25000,
+  "/Lotus/Upgrades/Focus/Defense/Stats/HealthMaxFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Defense/Stats/HealthRegenFocusUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Power/Active/BlastBurstFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Power/Active/BlastSlowFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Power/Active/CloakPullFocusUpgrade": 80000,
+  "/Lotus/Upgrades/Focus/Power/Active/CloakStaticFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Power/Active/DashBubbleFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Power/Active/DashElectricityFocusUpgrade": 80000,
+  "/Lotus/Upgrades/Focus/Power/Active/DisarmedEnergyUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Power/Active/DisarmingProjectionUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Power/Active/PowerFieldFocusUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Power/Residual/EnergyOverTimeFocusUpgrade": 25000,
+  "/Lotus/Upgrades/Focus/Power/Residual/FreeAbilityCastsFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Power/Residual/SlowHeadshotDamageFocusUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Power/Stats/EnergyPoolFocusUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Power/Stats/EnergyRestoreFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Tactic/Active/BlastConfuseFocusUpgrade": 25000,
+  "/Lotus/Upgrades/Focus/Tactic/Active/BlastDisarmFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Tactic/Active/CloakMeleeCritFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Tactic/Active/CloakRevealFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Tactic/Active/ComboAmpDamageFocusUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Tactic/Active/DashFinisherFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Tactic/Active/DashWaveFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Tactic/Active/FinisherTransferenceUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Tactic/Active/LiftHitDamageUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Tactic/Active/LiftHitWaveUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Tactic/Active/ProjectionExecutionUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Tactic/Active/ProjectionStretchUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Tactic/Active/SlamComboFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Tactic/Residual/MeleeComboFocusUpgrade": 25000,
+  "/Lotus/Upgrades/Focus/Tactic/Residual/MeleeXpFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Tactic/Stats/DashSpeedFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Tactic/Stats/MoveSpeedFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Ward/Active/BlastBulletAttractorFocusUpgrade": 80000,
+  "/Lotus/Upgrades/Focus/Ward/Active/BlastDamagePickupFocusUpgrade": 80000,
+  "/Lotus/Upgrades/Focus/Ward/Active/ClearStaticOnKillFocusUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Ward/Active/CloakAllyCloakFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Ward/Active/CloakReduceDamageFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Ward/Active/DashReduceArmourFocusUpgrade": 80000,
+  "/Lotus/Upgrades/Focus/Ward/Active/DashReduceDamageFocusUpgrade": 80000,
+  "/Lotus/Upgrades/Focus/Ward/Active/InvulnerableReturnFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Ward/Active/KnockdownImmunityFocusUpgrade": 25000,
+  "/Lotus/Upgrades/Focus/Ward/Active/MagneticExtensionUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Ward/Active/MagneticFieldFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Ward/Active/SunderingDissipationUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Ward/Active/UnairuWispFocusUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Ward/Residual/ArmourBuffFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Ward/Residual/ReflectDamageFocusUpgrade": 25000,
+  "/Lotus/Upgrades/Focus/Ward/Residual/SecondChanceDamageBuffFocusUpgrade": 95000,
+  "/Lotus/Upgrades/Focus/Ward/Residual/SecondChanceFocusUpgrade": 60000,
+  "/Lotus/Upgrades/Focus/Ward/Stats/ArmourIncreaseFocusUpgrade": 50000,
+  "/Lotus/Upgrades/Focus/Ward/Stats/BlastRadiusFocusUpgrade": 50000
+}