diff --git a/changelog.md b/changelog.md
index 37a96e0..8000205 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 2025-04-30 - 2.3.0 - feat(object-matchers)
+Add object key matchers: toHaveKeys and toHaveOwnKeys; remove obsolete roadmap plan file
+
+- Implemented toHaveKeys matcher to check for both own and inherited properties
+- Implemented toHaveOwnKeys matcher to check for own properties only
+- Added tests for key matchers in test/test.keys.ts
+- Removed readme.plan.md as it is now obsolete
+
 ## 2025-04-29 - 2.2.2 - fix(license-files)
 Remove legacy license file and add license.md to update file naming.
 
diff --git a/readme.plan.md b/readme.plan.md
deleted file mode 100644
index d1dfa5e..0000000
--- a/readme.plan.md
+++ /dev/null
@@ -1,55 +0,0 @@
-# Plan for Improving @push.rocks/smartexpect API
-
-This document captures the roadmap for evolving the `expect` / `expectAsync` API.
-
-## Phase 1: Unify Sync + Async
-- [x] Consolidate `expect` and `expectAsync` into a single `expect()` entry point.
-- [x] Introduce `.resolves` and `.rejects` chainable helpers for Promises.
-- [x] Deprecate `expectAsync`, provide migration guidance.
-
-## Phase 2: Timeout Helper
-- [x] Rename or wrap the existing `.timeout(ms)` to a more intuitive `.withTimeout(ms)`.
-
-## Phase 3: Custom Matchers
-- [x] Implement `expect.extend()` API for user-defined matchers.
-
-## Phase 4: TypeScript Typings
-- [ ] Enhance generic matcher types to infer narrow types after `.property()` / `.arrayItem()`.
-- [ ] Provide matcher overloads for primitive categories (string, number, array, etc.).
-
-## Phase 5: Namespaced Matchers
-- [ ] Group matchers under `.string`, `.array`, `.number`, etc. for discoverability.
-
-## Phase 6: Jest-Style Convenience
-- [x] Add `expect.any()` and `expect.anything()` matchers for use in `.toMatchObject()` patterns
-  (Snapshot matchers still TBD)
-
-The next items to tackle:
-
-3. Improve negation (`.not`) messaging
-   - Today `.not` simply flips pass/fail, but the failure message isn’t very descriptive. We should capture positive/negative message templates so e.g.
-     > expect(5).not.toBeGreaterThan(3)
-     emits:
-     "Expected 5 not to be greater than 3"
-
-4. Richer error output for objects/arrays
-   - Integrate a diff library (or extend `fast-deep-equal`) to show unified diffs between expected and actual values
-
-5. More built-in matchers
-   - toBeNaN(), toBeFinite()
-   - toBeWithinRange(min, max)
-   - toHaveKeys(...), toHaveOwnKeys(...)
-   - toThrowErrorMatching(/regex/), toThrowErrorWithMessage('…')
-   - string/array: toBeEmpty() alias
-   - object: toHaveOwnProperty() shorthand
-
-6. TypeScript-friendliness
-   - Enhance `.d.ts` so editors autocomplete namespace methods (e.g. `expect(x).string.`)
-   - Statically type matcher arguments to catch wrong types at compile time
-
-7. Async assertions and timeouts improvements
-   - Support `.not.resolves`, `.rejects.toThrow()`
-   - Provide clearer timeout errors (e.g. "Expected promise to resolve within …")
-
-8. Plugin/extension API
-   - Formalize `Assertion.extend()` plugin API for shipping matcher bundles
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diff --git a/test/test.keys.ts b/test/test.keys.ts
new file mode 100644
index 0000000..7b55f3c
--- /dev/null
+++ b/test/test.keys.ts
@@ -0,0 +1,51 @@
+import { tap, expect as tExpect } from '@push.rocks/tapbundle';
+import * as smartexpect from '../dist_ts/index.js';
+
+// Positive: toHaveKeys should match both own and inherited properties
+tap.test('toHaveKeys includes own and inherited properties', async () => {
+  class Parent { a = 1; }
+  class Child extends Parent { b = 2; }
+  const child = new Child();
+  smartexpect.expect(child).object.toHaveKeys(['a', 'b']);
+});
+
+// Positive: toHaveOwnKeys should match only own properties
+tap.test('toHaveOwnKeys includes only own properties', async () => {
+  class Parent { a = 1; }
+  class Child extends Parent { b = 2; }
+  const child = new Child();
+  smartexpect.expect(child).object.toHaveOwnKeys(['b']);
+});
+
+// Negative: toHaveKeys should fail if any key is missing
+tap.test('toHaveKeys fails when keys are missing', async () => {
+  const obj = { a: 1 };
+  try {
+    smartexpect.expect(obj).object.toHaveKeys(['a', 'b']);
+    throw new Error('Assertion did not throw');
+  } catch (err: any) {
+    tExpect(err.message.includes('Expected object to have keys')).toBeTrue();
+  }
+});
+
+// Negative: toHaveOwnKeys should fail when own keys are missing (inherited keys not counted)
+tap.test('toHaveOwnKeys fails when own keys are missing', async () => {
+  // 'a' is inherited via the prototype, not an own property
+  class Parent {}
+  Parent.prototype.a = 1;
+  class Child extends Parent {
+    constructor() {
+      super();
+      this.b = 2;
+    }
+  }
+  const child = new Child();
+  try {
+    smartexpect.expect(child).object.toHaveOwnKeys(['a', 'b']);
+    throw new Error('Assertion did not throw');
+  } catch (err: any) {
+    tExpect(err.message.includes('Expected object to have own keys')).toBeTrue();
+  }
+});
+
+export default tap.start();
\ No newline at end of file
diff --git a/ts/00_commitinfo_data.ts b/ts/00_commitinfo_data.ts
index 4483ce9..bdb0e57 100644
--- a/ts/00_commitinfo_data.ts
+++ b/ts/00_commitinfo_data.ts
@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@push.rocks/smartexpect',
-  version: '2.2.2',
+  version: '2.3.0',
   description: 'A testing library to manage expectations in code, offering both synchronous and asynchronous assertion methods.'
 }
diff --git a/ts/namespaces/object.ts b/ts/namespaces/object.ts
index 0a1d723..438ac12 100644
--- a/ts/namespaces/object.ts
+++ b/ts/namespaces/object.ts
@@ -130,4 +130,30 @@ export class ObjectMatchers<T extends object, M extends TExecutionType> {
         `\nReceived: ${JSON.stringify(v, null, 2)}`
     );
   }
+  
+  /**
+   * Assert object has the given keys (including inherited properties).
+   * @param keys Array of keys to check for presence.
+   */
+  public toHaveKeys(keys: string[]) {
+    return this.assertion.customAssertion(
+      (v) => keys.every((key) => key in (v as any)),
+      (v) =>
+        `Expected object to have keys ${JSON.stringify(keys)}` +
+        `\nReceived keys: ${JSON.stringify(Object.keys(v), null, 2)}`
+    );
+  }
+
+  /**
+   * Assert object has the given own keys (excluding inherited properties).
+   * @param keys Array of own keys to check.
+   */
+  public toHaveOwnKeys(keys: string[]) {
+    return this.assertion.customAssertion(
+      (v) => keys.every((key) => Object.prototype.hasOwnProperty.call(v as any, key)),
+      (v) =>
+        `Expected object to have own keys ${JSON.stringify(keys)}` +
+        `\nReceived own keys: ${JSON.stringify(Object.keys(v), null, 2)}`
+    );
+  }
 }
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