diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7207bd02..0cafefae 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,15 @@ All notable changes to this project will be documented in this file. See [standa
   - Adds mutex-based concurrency control for mkdir operations
   - Adds explicit compression tracking for file reads
 
+### BREAKING CHANGES (Deprecated API Removal)
+
+* **removed BrainyData**: The deprecated `BrainyData` class has been completely removed
+  - `BrainyData` was never part of the official Brainy 3.0 API
+  - All users should migrate to the `Brainy` class
+  - Migration is simple: Replace `new BrainyData()` with `new Brainy()` and add `await brain.init()`
+  - See `.strategy/NEURAL_API_RESPONSE.md` for complete migration guide
+  - Renamed `brainyDataInterface.ts` to `brainyInterface.ts` for clarity
+
 ### [3.19.1](https://github.com/soulcraftlabs/brainy/compare/v3.19.0...v3.19.1) (2025-09-29)
 
 ## [3.19.0](https://github.com/soulcraftlabs/brainy/compare/v3.18.0...v3.19.0) (2025-09-29)
diff --git a/src/brainy.ts b/src/brainy.ts
index 99247c88..2c7a4fdd 100644
--- a/src/brainy.ts
+++ b/src/brainy.ts
@@ -49,7 +49,7 @@ import {
   BrainyConfig
 } from './types/brainy.types.js'
 import { NounType, VerbType } from './types/graphTypes.js'
-import { BrainyInterface } from './types/brainyDataInterface.js'
+import { BrainyInterface } from './types/brainyInterface.js'
 
 /**
  * The main Brainy class - Clean, Beautiful, Powerful
diff --git a/src/mcp/brainyMCPAdapter.ts b/src/mcp/brainyMCPAdapter.ts
index c51f23a5..11e43d43 100644
--- a/src/mcp/brainyMCPAdapter.ts
+++ b/src/mcp/brainyMCPAdapter.ts
@@ -7,7 +7,7 @@
  */
 
 import { v4 as uuidv4 } from '../universal/uuid.js'
-import { BrainyInterface } from '../types/brainyDataInterface.js'
+import { BrainyInterface } from '../types/brainyInterface.js'
 import { NounType } from '../types/graphTypes.js'
 import {
   MCPRequest,
diff --git a/src/mcp/brainyMCPBroadcast.ts b/src/mcp/brainyMCPBroadcast.ts
index 65dcaf60..314e891f 100644
--- a/src/mcp/brainyMCPBroadcast.ts
+++ b/src/mcp/brainyMCPBroadcast.ts
@@ -14,7 +14,7 @@
 import { WebSocketServer, WebSocket } from 'ws'
 import { createServer, IncomingMessage } from 'node:http'
 import { BrainyMCPService } from './brainyMCPService.js'
-import { BrainyInterface } from '../types/brainyDataInterface.js'
+import { BrainyInterface } from '../types/brainyInterface.js'
 import { MCPServiceOptions } from '../types/mcpTypes.js'
 import { v4 as uuidv4 } from '../universal/uuid.js'
 
diff --git a/src/mcp/brainyMCPService.ts b/src/mcp/brainyMCPService.ts
index 7b35872f..d933dbe8 100644
--- a/src/mcp/brainyMCPService.ts
+++ b/src/mcp/brainyMCPService.ts
@@ -8,7 +8,7 @@
  */
 
 import { v4 as uuidv4 } from '../universal/uuid.js'
-import { BrainyInterface } from '../types/brainyDataInterface.js'
+import { BrainyInterface } from '../types/brainyInterface.js'
 import {
   MCPRequest,
   MCPResponse,
diff --git a/src/neural/embeddedPatterns.ts b/src/neural/embeddedPatterns.ts
index d68cf6d0..0d6a0d19 100644
--- a/src/neural/embeddedPatterns.ts
+++ b/src/neural/embeddedPatterns.ts
@@ -2,7 +2,7 @@
  * 🧠 BRAINY EMBEDDED PATTERNS
  * 
  * AUTO-GENERATED - DO NOT EDIT
- * Generated: 2025-09-29T17:05:30.153Z
+ * Generated: 2025-09-30T23:01:33.167Z
  * Patterns: 220
  * Coverage: 94-98% of all queries
  * 
diff --git a/src/shared/default-augmentations.ts b/src/shared/default-augmentations.ts
index b82bc0c0..efd4e3d9 100644
--- a/src/shared/default-augmentations.ts
+++ b/src/shared/default-augmentations.ts
@@ -5,7 +5,7 @@
  * These are the core "sensory organs" of the atomic age brain-in-jar system
  */
 
-import { BrainyInterface } from '../types/brainyDataInterface.js'
+import { BrainyInterface } from '../types/brainyInterface.js'
 
 /**
  * Default augmentations that ship with Brainy
diff --git a/src/types/brainyDataInterface.ts b/src/types/brainyInterface.ts
similarity index 100%
rename from src/types/brainyDataInterface.ts
rename to src/types/brainyInterface.ts