Kong · gatzjames · Aug 5, 2026 · Aug 5, 2026
diff --git a/.dependency-cruiser.cjs b/.dependency-cruiser.cjs
@@ -19,6 +19,35 @@ module.exports = {
       from: { path: '(^|/)src/(routes|ui)/' },
       to: { path: '(^|/)src/common/database\\.ts$' },
     },
+    {
+      name: 'domain-no-outward-deps',
+      comment:
+        'domain is the hexagon center: pure business logic with zero dependency on application, ' +
+        'infrastructure, any app, or Electron/transport libs. Everything else depends on domain, never ' +
+        'the reverse.',
+      severity: 'warn',
+      from: { path: '^domain/' },
+      to: { path: '^(application|infrastructure|apps)/|^(node_modules/)?electron($|/)' },
+    },
+    {
+      name: 'application-domain-only',
+      comment:
+        'application orchestrates domain entities/repositories and depends on domain only - never ' +
+        'infrastructure (concrete adapters) or a specific app.',
+      severity: 'warn',
+      from: { path: '^application/' },
+      to: { path: '^(infrastructure|apps)/' },
+    },
+    {
+      name: 'infrastructure-no-application-or-apps',
+      comment:
+        'infrastructure implements domain-defined ports and depends on domain plus external libs/' +
+        'Electron/Node - never application (that direction is backwards) or a specific app (infrastructure ' +
+        'is reached from an app\'s bootstrap/wiring code, not the other way around).',
+      severity: 'warn',
+      from: { path: '^infrastructure/' },
+      to: { path: '^(application|apps)/' },
+    },
   ],
   options: {
     doNotFollow: {

diff --git a/application/package.json b/application/package.json
@@ -0,0 +1,27 @@
+{
+  "private": true,
+  "name": "application",
+  "license": "Apache-2.0",
+  "version": "13.1.0",
+  "author": "Kong <office@konghq.com>",
+  "description": "Use cases that orchestrate domain entities and repositories, plus cross-cutting application-level ports (NetworkClient, TemplatingEngine, Clock, IdGenerator, ...). Depends on domain only.",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Kong/insomnia.git",
+    "directory": "application"
+  },
+  "bugs": {
+    "url": "https://github.com/kong/insomnia/issues"
+  },
+  "homepage": "https://github.com/Kong/insomnia#readme",
+  "exports": {
+    ".": {
+      "import": "./src/index.ts",
+      "types": "./src/index.ts"
+    }
+  },
+  "scripts": {
+    "lint": "eslint . --ext .ts,.tsx --cache",
+    "type-check": "tsc --noEmit --project tsconfig.json"
+  }
+}
diff --git a/application/src/index.ts b/application/src/index.ts
@@ -0,0 +1,6 @@
+// application: use cases that orchestrate domain entities and repositories, plus
+// cross-cutting application-level ports (NetworkClient, TemplatingEngine, Clock,
+// IdGenerator, ...). Depends on domain only.
+// Populated incrementally, one aggregate at a time.
+// eslint-disable-next-line unicorn/require-module-specifiers -- placeholder until real exports land
+export {};
diff --git a/application/tsconfig.json b/application/tsconfig.json
@@ -0,0 +1,20 @@
+{
+  "compilerOptions": {
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "resolveJsonModule": true,
+    "moduleResolution": "bundler",
+    "isolatedModules": true,
+    "strict": true,
+    "noImplicitReturns": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true,
+    "useUnknownInCatchVariables": false,
+    "target": "es2022",
+    "module": "ESNext",
+    "noEmit": true,
+    "lib": ["ES2023"]
+  },
+  "include": ["src"]
+}
diff --git a/domain/package.json b/domain/package.json
@@ -0,0 +1,27 @@
+{
+  "private": true,
+  "name": "domain",
+  "license": "Apache-2.0",
+  "version": "13.1.0",
+  "author": "Kong <office@konghq.com>",
+  "description": "Pure business logic - entities, value objects, and the Repository/port interfaces implemented by infrastructure. No I/O, no framework or runtime dependencies.",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Kong/insomnia.git",
+    "directory": "domain"
+  },
+  "bugs": {
+    "url": "https://github.com/kong/insomnia/issues"
+  },
+  "homepage": "https://github.com/Kong/insomnia#readme",
+  "exports": {
+    ".": {
+      "import": "./src/index.ts",
+      "types": "./src/index.ts"
+    }
+  },
+  "scripts": {
+    "lint": "eslint . --ext .ts,.tsx --cache",
+    "type-check": "tsc --noEmit --project tsconfig.json"
+  }
+}
diff --git a/domain/src/index.ts b/domain/src/index.ts
@@ -0,0 +1,5 @@
+// domain: pure business logic - entities, value objects, and the Repository/port
+// interfaces implemented by infrastructure. No I/O, no framework or runtime dependencies.
+// Populated incrementally, one aggregate at a time.
+// eslint-disable-next-line unicorn/require-module-specifiers -- placeholder until real exports land
+export {};
diff --git a/domain/tsconfig.json b/domain/tsconfig.json
@@ -0,0 +1,20 @@
+{
+  "compilerOptions": {
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "resolveJsonModule": true,
+    "moduleResolution": "bundler",
+    "isolatedModules": true,
+    "strict": true,
+    "noImplicitReturns": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true,
+    "useUnknownInCatchVariables": false,
+    "target": "es2022",
+    "module": "ESNext",
+    "noEmit": true,
+    "lib": ["ES2023"]
+  },
+  "include": ["src"]
+}
diff --git a/infrastructure/package.json b/infrastructure/package.json
@@ -0,0 +1,27 @@
+{
+  "private": true,
+  "name": "infrastructure",
+  "license": "Apache-2.0",
+  "version": "13.1.0",
+  "author": "Kong <office@konghq.com>",
+  "description": "Adapters implementing domain- and application-defined ports (persistence, network, sync, secret storage). Depends on domain plus external libs/Electron/Node. Only reachable from each app's own bootstrap/wiring code, never from route/command logic directly.",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Kong/insomnia.git",
+    "directory": "infrastructure"
+  },
+  "bugs": {
+    "url": "https://github.com/kong/insomnia/issues"
+  },
+  "homepage": "https://github.com/Kong/insomnia#readme",
+  "exports": {
+    ".": {
+      "import": "./src/index.ts",
+      "types": "./src/index.ts"
+    }
+  },
+  "scripts": {
+    "lint": "eslint . --ext .ts,.tsx --cache",
+    "type-check": "tsc --noEmit --project tsconfig.json"
+  }
+}
diff --git a/infrastructure/src/index.ts b/infrastructure/src/index.ts
@@ -0,0 +1,6 @@
+// infrastructure: adapters implementing domain- and application-defined ports
+// (persistence, network, sync, secret storage). Depends on domain plus external
+// libs/Electron/Node. Only reachable from each app's own bootstrap/wiring code.
+// Populated incrementally, one aggregate at a time.
+// eslint-disable-next-line unicorn/require-module-specifiers -- placeholder until real exports land
+export {};
diff --git a/infrastructure/tsconfig.json b/infrastructure/tsconfig.json
@@ -0,0 +1,21 @@
+{
+  "compilerOptions": {
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "resolveJsonModule": true,
+    "moduleResolution": "bundler",
+    "isolatedModules": true,
+    "strict": true,
+    "noImplicitReturns": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noFallthroughCasesInSwitch": true,
+    "useUnknownInCatchVariables": false,
+    "target": "es2022",
+    "module": "ESNext",
+    "noEmit": true,
+    "lib": ["ES2023"],
+    "types": ["node"]
+  },
+  "include": ["src"]
+}
diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -17,6 +17,9 @@
   "workspaces": [
     "apps/desktop",
     "apps/cli",
+    "domain",
+    "application",
+    "infrastructure",
     "packages/insomnia-testing",
     "packages/insomnia-data",
     "packages/insomnia-analytics",
@@ -30,9 +33,10 @@
     "lint": "npm run lint --workspaces --if-present",
     "type-check": "npm run type-check --workspaces --if-present",
     "test": "npm run test --workspaces --if-present",
-    "check-boundaries": "npm run check-boundaries:insomnia-data && npm run check-boundaries:insomnia",
+    "check-boundaries": "npm run check-boundaries:insomnia-data && npm run check-boundaries:insomnia && npm run check-boundaries:hexagon",
     "check-boundaries:insomnia-data": "depcruise packages/insomnia-data/src packages/insomnia-data/node-src packages/insomnia-data/common-src --config .dependency-cruiser.cjs",
     "check-boundaries:insomnia": "cd apps/desktop && depcruise src --config ../../.dependency-cruiser.cjs --ts-config tsconfig.json",
+    "check-boundaries:hexagon": "depcruise domain/src application/src infrastructure/src --config .dependency-cruiser.cjs",
     "clean": "git clean -dfX",
     "install-libcurl-electron": "node-pre-gyp install --directory node_modules/@getinsomnia/node-libcurl --update-binary --runtime=electron --target=43.2.0",
     "install-libcurl-node": "node-pre-gyp install --directory node_modules/@getinsomnia/node-libcurl --update-binary --runtime=node --target=24.18.0",