diff --git a/packages/core/src/server/index.js b/packages/core/src/server/index.js
index 8a19cf7..65c90a2 100644
--- a/packages/core/src/server/index.js
+++ b/packages/core/src/server/index.js
@@ -8,9 +8,24 @@ import startFlush from './start-flush';
 const resources = express.static(join(process.cwd(), 'projects'));
 
 export const hooks = {
+  '@flecks/core.mixin': (Flecks) => (
+    class FlecksWithPerseaCore extends Flecks {
+
+      constructor(...args) {
+        super(...args);
+        if (!this.persea) {
+          this.persea = {};
+        }
+        if (!this.persea.core) {
+          this.persea.core = {};
+        }
+        this.persea.core.patches = [];
+        this.persea.core.replacements = [];
+      }
+
+    }
+  ),
   '@flecks/core.starting': (flecks) => {
-    flecks.set('$persea/core.patches', []);
-    flecks.set('$persea/core.replacements', []);
     startFlush(flecks);
   },
   '@flecks/core.webpack': (target, config) => {
diff --git a/packages/core/src/server/packets/decorators/action.js b/packages/core/src/server/packets/decorators/action.js
index 2e2a0d3..b922325 100644
--- a/packages/core/src/server/packets/decorators/action.js
+++ b/packages/core/src/server/packets/decorators/action.js
@@ -15,13 +15,13 @@ export default (Action, flecks) => class ProjectAction extends Action {
     const {data: {type, payload}} = packet;
     switch (type) {
       case patchJsonResource.toString(): {
-        flecks.get('$persea/core.patches').push(payload);
+        flecks.persea.core.patches.push(payload);
         break;
       }
       case redo.toString(): {
         const {project, uri} = payload;
         const path = join(process.cwd(), 'projects', project, uri);
-        const {toBuffer, fromBuffer} = flecks.get('$avocado/resource/persea.controllers')
+        const {toBuffer, fromBuffer} = flecks.avocado.resource.persea.Controllers
           .find(({matcher}) => uri.match(matcher));
         const buffer = await readFile(path);
         const json = fromBuffer(buffer, flecks);
@@ -39,13 +39,13 @@ export default (Action, flecks) => class ProjectAction extends Action {
         break;
       }
       case replaceResource.toString(): {
-        flecks.get('$persea/core.replacements').push(payload);
+        flecks.persea.core.replacements.push(payload);
         break;
       }
       case undo.toString(): {
         const {project, uri} = payload;
         const path = join(process.cwd(), 'projects', project, uri);
-        const {toBuffer, fromBuffer} = flecks.get('$avocado/resource/persea.controllers')
+        const {toBuffer, fromBuffer} = flecks.avocado.resource.persea.Controllers
           .find(({matcher}) => uri.match(matcher));
         const buffer = await readFile(path);
         const json = fromBuffer(buffer, flecks);
diff --git a/packages/core/src/server/start-flush.js b/packages/core/src/server/start-flush.js
index 9fb212e..36ba089 100644
--- a/packages/core/src/server/start-flush.js
+++ b/packages/core/src/server/start-flush.js
@@ -5,7 +5,7 @@ import {applyPatch, compare} from 'fast-json-patch';
 
 const startFlush = (flecks) => {
   const flushPatches = async () => {
-    const patches = flecks.get('$persea/core.patches');
+    const {patches} = flecks.persea.core;
     if (patches.length > 0) {
       while (patches.length > 0) {
         const {
@@ -16,7 +16,7 @@ const startFlush = (flecks) => {
         } = patches.shift();
         const path = join(process.cwd(), 'projects', project, uri);
         // Get controller.
-        const {toBuffer, fromBuffer} = flecks.get('$avocado/resource/persea.controllers')
+        const {toBuffer, fromBuffer} = flecks.avocado.resource.persea.Controllers
           .find(({matcher}) => uri.match(matcher));
         // Load.
         // eslint-disable-next-line no-await-in-loop
@@ -44,7 +44,7 @@ const startFlush = (flecks) => {
   };
   setTimeout(flushPatches, 0);
   const flushReplacements = async () => {
-    const replacements = flecks.get('$persea/core.replacements');
+    const {replacements} = flecks.persea.core;
     if (replacements.length > 0) {
       while (replacements.length > 0) {
         const {value, project, uri} = replacements.shift();
diff --git a/packages/core/src/sidebar/organization/organization/index.jsx b/packages/core/src/sidebar/organization/organization/index.jsx
index 229ecf6..f71fb53 100644
--- a/packages/core/src/sidebar/organization/organization/index.jsx
+++ b/packages/core/src/sidebar/organization/organization/index.jsx
@@ -92,7 +92,7 @@ function Organization({
         nodes={nodesFromResourcePaths(label, uuid, resourcePaths)}
         renderLabel={({label, nodes, value}) => {
           const {displayName = 'Binary'} = flecks
-            .get('$avocado/resource/persea.controllers')
+            .avocado.resource.persea.Controllers
             .find(({matcher}) => value.match(matcher))
             .Component;
           return (
diff --git a/packages/core/src/state/projects.js b/packages/core/src/state/projects.js
index c0f00c6..5f908ce 100644
--- a/packages/core/src/state/projects.js
+++ b/packages/core/src/state/projects.js
@@ -17,7 +17,7 @@ export const fetchProjectResource = createAsyncThunk(
   async ({uri, uuid}, {extra: flecks}) => {
     Resource.root = join('/projects', uuid);
     const buffer = await Resource.read(uri);
-    const {fromBuffer} = flecks.get('$avocado/resource/persea.controllers')
+    const {fromBuffer} = flecks.avocado.resource.persea.Controllers
       .find(({matcher}) => uri.match(matcher));
     try {
       return fromBuffer(Buffer.from(buffer), flecks);