diff --git a/README.md b/README.md
index a2ce22a..41f8b71 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,8 @@
 A lightweight, zero-dependency CLI tool to compare multiple JSON files and identify missing (non-common) keys.
 It generates a per-file report of unique keys to help identify schema drift.
 
-Perfect for auditing translation files, config sets, or API mocks.
+### Why jsonkdiff?
+Standard diff tools (like `git diff`) show line-by-line changes. `@grrtbrtr/jsonkdiff` focuses on **structural completeness**. It answers the question: *"I added a new key to my English translation file; did I forget to add it to the other 5 languages?"*
 
 ## Features
 
@@ -29,16 +30,44 @@ npm install -g @grrtbrtr/jsonkdiff
 jsonkdiff file1.json file2.json file3.json
 ```
 
-## Example output
+## Usage example: auditing i18n files
 
-If `en.json` has `{"auth": {"login": "Log In"}}` and `es.json` is empty, `jsonkdiff` will report:
+**file-a.json (English)**
 ```JSON
-{
-  "es.json": [
-    "auth",
-    "auth.login"
-  ]
-}
+{ "nav": { "home": "Home", "about": "About" }, "logout": "Log Out" }
+```
+
+**file-b.json (French)**
+```JSON
+{ "nav": { "home": "Accueil" } }
+```
+
+**Running:**
+```bash
+npx @grrtbrtr/jsonkdiff file-a.json file-b.json
+```
+
+**Output:**
+```
+--- JSON Key Diff Report ---
+
+File: b.json
+  × Missing key: nav.about
+  × Missing key: logout
+```
+
+## CI/CD integration
+
+`jsonkdiff` follows standard Unix exit codes, making it usable in CI/CD pipelines (GitHub Actions, GitLab CI, etc.):
+
+- **Exit code `0`**: No missing keys found (Success).
+- **Exit code `1`**: Missing keys detected or an error occurred (Failure).
+
+**Example: failing a GitHub Action if keys are missing**
+
+```yaml
+- name: Audit JSON Schemas
+  run: npx @grrtbrtr/jsonkdiff locales/en.json locales/fr.json
 ```
 
 ## License
diff --git a/bin/cli.js b/bin/cli.js
index 76164d0..56fc735 100644
--- a/bin/cli.js
+++ b/bin/cli.js
@@ -14,7 +14,7 @@ const files = process.argv.slice(2);
 
 if (files.length < 2) {
   console.log(`\n${STYLES.bold}Usage:${STYLES.reset} jsonkdiff <file1.json> <file2.json> ...`);
-  process.exit(0);
+  process.exit(1);
 }
 
 async function main() {
diff --git a/package.json b/package.json
index a894515..bc40a2b 100644
--- a/package.json
+++ b/package.json
@@ -1,17 +1,30 @@
 {
   "name": "@grrtbrtr/jsonkdiff",
-  "version": "1.0.2",
+  "version": "1.1.0",
   "description": "Compare multiple JSON files and find non-common keys. Generates a per-file report of unique keys to help identify schema drift.",
   "keywords": [
     "json",
     "json-keys",
+    "json-diff",
+    "json-compare",
     "json-comparison",
-    "diff",
+    "json-schema-validator",
+    "i18n-audit",
+    "i18n-checker",
+    "i18n-validator",
+    "localization-tools",
+    "localization-helper",
+    "translation-check",
     "schema",
     "schema-drift",
-    "comparison",
+    "deep-diff",
+    "recursive-compare",
+    "zero-dependencies",
     "cli",
-    "devtools"
+    "cli-tool",
+    "devtools",
+    "config-validator",
+    "deep-comparison"
   ],
   "homepage": "https://github.com/grrtbrtr/jsonkdiff#readme",
   "bugs": {
@@ -23,8 +36,14 @@
   },
   "license": "GPL-3.0-only",
   "author": "Gerrit Bertier <gerrit.bertier@gmail.com>",
+  "funding": "https://github.com/grrtbrtr",
   "type": "module",
+  "sideEffects": false,
   "main": "src/index.js",
+  "exports": {
+    ".": "./src/index.js",
+    "./package.json": "./package.json"
+  },
   "bin": {
     "jsonkdiff": "bin/cli.js"
   },
diff --git a/src/index.js b/src/index.js
index 80ca10b..7f69ad1 100644
--- a/src/index.js
+++ b/src/index.js
@@ -13,15 +13,20 @@ import { getDeepKeys } from './utils/object-utils.js';
  */
 export function computeKeyDiff(datasets) {
   const allKeys = new Set();
+
   const processedData = datasets.map(ds => {
     const keys = getDeepKeys(ds.object);
     keys.forEach(k => allKeys.add(k));
-    return { name: ds.name, keys };
+
+    return {
+      name: ds.name,
+      keySet: new Set(keys),
+    };
   });
 
   const report = {};
   for (const item of processedData) {
-    report[item.name] = [...allKeys].filter(k => !item.keys.includes(k));
+    report[item.name] = [...allKeys].filter(k => !item.keySet.has(k));
   }
   return report;
 }