diff --git a/services/minecraft/src/cognitive/perception/mineflayer-perception-collector.ts b/services/minecraft/src/cognitive/perception/mineflayer-perception-collector.ts
new file mode 100644
index 000000000..56c5751af
--- /dev/null
+++ b/services/minecraft/src/cognitive/perception/mineflayer-perception-collector.ts
@@ -0,0 +1,313 @@
+import type { Logg } from '@guiiai/logg'
+import type { Vec3 } from 'vec3'
+
+import type { MineflayerWithAgents } from '../types'
+import type {
+  FeltDamageTakenEvent,
+  FeltItemCollectedEvent,
+  HeardSoundEvent,
+  RawPerceptionEvent,
+  SightedArmSwingEvent,
+  SightedEntityMovedEvent,
+  SightedSneakToggleEvent,
+} from './raw-events'
+
+export class MineflayerPerceptionCollector {
+  private bot: MineflayerWithAgents | null = null
+  private readonly listeners: Array<{
+    event: string
+    handler: (...args: any[]) => void
+  }> = []
+
+  private readonly lastMovedEmitAt = new Map<string, number>()
+  private readonly lastSneak = new Map<string, boolean>()
+  private lastSelfHealth: number | null = null
+
+  constructor(
+    private readonly deps: {
+      logger: Logg
+      emitRaw: (event: RawPerceptionEvent) => void
+      maxDistance: number
+    },
+  ) { }
+
+  public init(bot: MineflayerWithAgents): void {
+    this.bot = bot
+    this.lastSelfHealth = bot.bot.health
+
+    this.onBot('entityMoved', (entity: any) => {
+      const now = Date.now()
+      const dist = this.distanceTo(entity)
+      if (dist === null || dist > this.deps.maxDistance)
+        return
+
+      const entityId = this.entityId(entity)
+      const last = this.lastMovedEmitAt.get(entityId) ?? 0
+      if (now - last < 100)
+        return
+      this.lastMovedEmitAt.set(entityId, now)
+
+      const event: SightedEntityMovedEvent = {
+        modality: 'sighted',
+        kind: 'entity_moved',
+        entityType: entity?.type === 'player' ? 'player' : 'mob',
+        entityId,
+        displayName: entity?.username,
+        distance: dist,
+        hasLineOfSight: this.hasLineOfSight(entity),
+        timestamp: now,
+        source: 'minecraft',
+        pos: entity?.position,
+      }
+
+      this.deps.emitRaw(event)
+    })
+
+    this.onBot('entitySwingArm', (entity: any) => {
+      const now = Date.now()
+      const dist = this.distanceTo(entity)
+      if (dist === null || dist > this.deps.maxDistance)
+        return
+
+      const event: SightedArmSwingEvent = {
+        modality: 'sighted',
+        kind: 'arm_swing',
+        entityType: 'player',
+        entityId: this.entityId(entity),
+        displayName: entity?.username,
+        distance: dist,
+        hasLineOfSight: this.hasLineOfSight(entity),
+        timestamp: now,
+        source: 'minecraft',
+        pos: entity?.position,
+      }
+
+      this.deps.emitRaw(event)
+    })
+
+    this.onBot('entityUpdate', (entity: any) => {
+      if (!entity || entity.type !== 'player')
+        return
+
+      const now = Date.now()
+      const dist = this.distanceTo(entity)
+      if (dist === null || dist > this.deps.maxDistance)
+        return
+
+      const entityId = this.entityId(entity)
+
+      const flags = entity?.metadata?.[0]
+      const sneaking = typeof flags === 'number' ? !!(flags & 0x02) : false
+
+      const prev = this.lastSneak.get(entityId)
+      if (prev === sneaking)
+        return
+      this.lastSneak.set(entityId, sneaking)
+
+      const event: SightedSneakToggleEvent = {
+        modality: 'sighted',
+        kind: 'sneak_toggle',
+        entityType: 'player',
+        entityId,
+        displayName: entity?.username,
+        distance: dist,
+        hasLineOfSight: this.hasLineOfSight(entity),
+        sneaking,
+        timestamp: now,
+        source: 'minecraft',
+        pos: entity?.position,
+      }
+
+      this.deps.emitRaw(event)
+    })
+
+    this.onBot('soundEffectHeard', (soundId: string, pos: Vec3) => {
+      const now = Date.now()
+      if (!pos)
+        return
+
+      const dist = this.distanceToPos(pos)
+      if (dist === null || dist > this.deps.maxDistance)
+        return
+
+      const event: HeardSoundEvent = {
+        modality: 'heard',
+        kind: 'sound',
+        soundId,
+        distance: dist,
+        timestamp: now,
+        source: 'minecraft',
+        pos,
+      }
+
+      this.deps.emitRaw(event)
+    })
+
+    // Felt: damage taken (self health decreased)
+    this.onBot('health', () => {
+      if (!this.bot)
+        return
+
+      const now = Date.now()
+      const current = this.bot.bot.health
+      const prev = this.lastSelfHealth
+      this.lastSelfHealth = current
+      if (typeof prev !== 'number')
+        return
+
+      if (current >= prev)
+        return
+
+      const event: FeltDamageTakenEvent = {
+        modality: 'felt',
+        kind: 'damage_taken',
+        amount: prev - current,
+        timestamp: now,
+        source: 'minecraft',
+      }
+
+      this.deps.emitRaw(event)
+    })
+
+    // Felt: item collected (best-effort; depends on mineflayer version/events)
+    this.onBot('playerCollect', (collector: any, collected: any) => {
+      if (!this.bot)
+        return
+      if (!collector)
+        return
+      if (collector.username !== this.bot.bot.username)
+        return
+
+      const now = Date.now()
+      const itemName = String(collected?.name ?? collected?.displayName ?? collected?.type ?? 'unknown')
+
+      const event: FeltItemCollectedEvent = {
+        modality: 'felt',
+        kind: 'item_collected',
+        itemName,
+        timestamp: now,
+        source: 'minecraft',
+      }
+
+      this.deps.emitRaw(event)
+    })
+
+    this.onBot('entityCollect', (collector: any, collected: any) => {
+      if (!this.bot)
+        return
+      if (!collector)
+        return
+      if (collector.username !== this.bot.bot.username)
+        return
+
+      const now = Date.now()
+      const itemName = String(collected?.name ?? collected?.displayName ?? collected?.type ?? 'unknown')
+
+      const event: FeltItemCollectedEvent = {
+        modality: 'felt',
+        kind: 'item_collected',
+        itemName,
+        timestamp: now,
+        source: 'minecraft',
+      }
+
+      this.deps.emitRaw(event)
+    })
+  }
+
+  public destroy(): void {
+    if (!this.bot)
+      return
+
+    for (const { event, handler } of this.listeners) {
+      try {
+        (this.bot.bot as any).off?.(event, handler);
+        (this.bot.bot as any).removeListener?.(event, handler)
+      }
+      catch (err) {
+        this.deps.logger.withError(err as Error).error('MineflayerPerceptionCollector: failed to remove listener')
+      }
+    }
+
+    this.listeners.length = 0
+    this.lastMovedEmitAt.clear()
+    this.lastSneak.clear()
+    this.lastSelfHealth = null
+    this.bot = null
+  }
+
+  private onBot(event: string, handler: (...args: any[]) => void): void {
+    if (!this.bot)
+      return
+
+    (this.bot.bot as any).on(event, handler)
+    this.listeners.push({ event, handler })
+  }
+
+  private entityId(entity: any): string {
+    return String(entity?.id ?? entity?.uuid ?? entity?.username ?? 'unknown')
+  }
+
+  private distanceTo(entity: any): number | null {
+    const pos = entity?.position
+    if (!pos)
+      return null
+    return this.distanceToPos(pos)
+  }
+
+  private distanceToPos(pos: Vec3): number | null {
+    if (!this.bot)
+      return null
+    const selfPos = this.bot.bot.entity?.position
+    if (!selfPos)
+      return null
+    try {
+      return selfPos.distanceTo(pos)
+    }
+    catch {
+      return null
+    }
+  }
+
+  private hasLineOfSight(entity: any): boolean {
+    if (!this.bot)
+      return false
+
+    try {
+      const canSee = (this.bot.bot as any).canSeeEntity
+      if (typeof canSee === 'function')
+        return !!canSee.call(this.bot.bot, entity)
+    }
+    catch { }
+
+    // Fallback ray-march; intentionally simple (we'll optimize later)
+    try {
+      const from = this.bot.bot.entity.position.offset(0, this.bot.bot.entity.height * 0.9, 0)
+      const to = entity.position.offset(0, entity.height * 0.9, 0)
+      const dir = to.minus(from)
+      const total = dir.norm()
+      if (total <= 0)
+        return true
+
+      const stepSize = 0.25
+      const steps = Math.ceil(total / stepSize)
+      const step = dir.normalize().scaled(stepSize)
+
+      let cur = from.clone()
+      for (let i = 0; i < steps; i++) {
+        cur = cur.plus(step)
+        const block = this.bot.bot.blockAt(cur)
+        if (!block)
+          continue
+
+        if (block.boundingBox === 'block' && !block.transparent)
+          return false
+      }
+
+      return true
+    }
+    catch {
+      return false
+    }
+  }
+}