diff --git a/marklogic.d.ts b/marklogic.d.ts
index 0de2cfde..0c606ef9 100644
--- a/marklogic.d.ts
+++ b/marklogic.d.ts
@@ -128,6 +128,29 @@ declare module 'marklogic' {
     systemTime?: string;
   }
 
+  /**
+   * A timestamp object representing a point in time on the server.
+   * Used for point-in-time queries and operations.
+   * @since 2.1.1
+   */
+  export interface Timestamp {
+    /** The timestamp value as a string */
+    value: string | null;
+  }
+
+  /**
+   * Result value from eval, xqueryEval, or invoke operations.
+   * Each returned value includes format, datatype, and the actual value.
+   */
+  export interface EvalResult {
+    /** Format of the value: 'json', 'xml', 'text', or 'binary' */
+    format: 'json' | 'xml' | 'text' | 'binary';
+    /** Datatype of the value (e.g., 'node()', 'string', 'boolean', 'integer') */
+    datatype: string;
+    /** The actual value (type depends on format and datatype) */
+    value: any;
+  }
+
   /**
    * Result from a removeAll operation.
    */
@@ -390,6 +413,114 @@ declare module 'marklogic' {
      */
     checkConnection(): ResultProvider<ConnectionCheckResult>;
 
+    /**
+     * Creates one or more JSON documents for a collection.
+     * The server assigns URI identifiers to the documents.
+     * This is a simplified convenience method - use documents.write() for more control.
+     * @since 1.0
+     * @param collection - The collection name for the documents
+     * @param content - The JSON content object(s) for the documents
+     * @returns A result provider that resolves to an array of assigned URIs
+     */
+    createCollection(collection: string, ...content: any[]): ResultProvider<string[]>;
+
+    /**
+     * Probes whether a document exists.
+     * This is a simplified convenience method - use documents.probe() for more information.
+     * @since 1.0
+     * @param uri - The URI of the document to check
+     * @returns A result provider that resolves to a boolean
+     */
+    probe(uri: string): ResultProvider<boolean>;
+
+    /**
+     * Queries documents in a collection.
+     * This is a simplified convenience method - use documents.query() for more control.
+     * @since 1.0
+     * @param collection - The collection name
+     * @param query - Optional query built by queryBuilder
+     * @returns A result provider that resolves to an array of document content
+     */
+    queryCollection(collection: string, query?: any): ResultProvider<DocumentContent[]>;
+
+    /**
+     * Reads one or more documents, returning just the content.
+     * This is a simplified convenience method - use documents.read() for metadata too.
+     * @since 1.0
+     * @param uris - One or more document URIs
+     * @returns A result provider that resolves to an array of document content
+     */
+    read(...uris: string[]): ResultProvider<DocumentContent[]>;
+
+    /**
+     * Removes one or more documents.
+     * This is a simplified convenience method - use documents.remove() for more control.
+     * @since 1.0
+     * @param uris - One or more document URIs to remove
+     * @returns A result provider that resolves to an array of removed URIs
+     */
+    remove(...uris: string[]): ResultProvider<string[]>;
+
+    /**
+     * Removes all documents in a collection.
+     * This is a simplified convenience method - use documents.removeAll() for more options.
+     * @since 1.0
+     * @param collection - The collection whose documents should be deleted
+     * @returns A result provider that resolves to the collection name
+     */
+    removeCollection(collection: string): ResultProvider<string>;
+
+    /**
+     * Writes documents to a collection using a URI-to-content mapping.
+     * This is a simplified convenience method - use documents.write() for more control.
+     * @since 1.0
+     * @param collection - The collection name for the documents
+     * @param documents - An object mapping URIs to document content
+     * @returns A result provider that resolves to an array of written URIs
+     */
+    writeCollection(collection: string, documents: Record<string, DocumentContent>): ResultProvider<string[]>;
+
+    /**
+     * Creates a timestamp object for point-in-time operations.
+     * @since 2.1.1
+     * @param value - Optional timestamp value as a string
+     * @returns A Timestamp object
+     */
+    createTimestamp(value?: string): Timestamp;
+
+    /**
+     * Evaluates JavaScript code on the server.
+     * The user must have permission to evaluate code and execute the actions performed.
+     * @since 1.0
+     * @param source - The JavaScript source code to evaluate
+     * @param variables - Optional object with variable name-value pairs
+     * @param txid - Optional transaction ID or Transaction object
+     * @returns A result provider that resolves to an array of EvalResult objects
+     */
+    eval(source: string, variables?: Record<string, any>, txid?: string | object): ResultProvider<EvalResult[]>;
+
+    /**
+     * Evaluates XQuery code on the server.
+     * The user must have permission to evaluate code and execute the actions performed.
+     * @since 1.0
+     * @param source - The XQuery source code to evaluate
+     * @param variables - Optional object with variable name-value pairs (keys may use Clark notation)
+     * @param txid - Optional transaction ID or Transaction object
+     * @returns A result provider that resolves to an array of EvalResult objects
+     */
+    xqueryEval(source: string, variables?: Record<string, any>, txid?: string | object): ResultProvider<EvalResult[]>;
+
+    /**
+     * Invokes a JavaScript or XQuery module on the server.
+     * The module must have been installed previously (typically with config.extlibs.write()).
+     * @since 1.0
+     * @param path - The path of the module in the modules database
+     * @param variables - Optional object with variable name-value pairs
+     * @param txid - Optional transaction ID or Transaction object
+     * @returns A result provider that resolves to an array of EvalResult objects
+     */
+    invoke(path: string, variables?: Record<string, any>, txid?: string | object): ResultProvider<EvalResult[]>;
+
     /**
      * Releases the client and destroys the agent.
      * Call this method when you're done with the client to free up resources.
diff --git a/test-app/src/main/ml-modules/root/hello.xqy b/test-app/src/main/ml-modules/root/hello.xqy
new file mode 100644
index 00000000..fc95be76
--- /dev/null
+++ b/test-app/src/main/ml-modules/root/hello.xqy
@@ -0,0 +1 @@
+<hello>world</hello>
diff --git a/test-typescript/dbclient-convenience-runtime.test.ts b/test-typescript/dbclient-convenience-runtime.test.ts
new file mode 100644
index 00000000..3aff4d06
--- /dev/null
+++ b/test-typescript/dbclient-convenience-runtime.test.ts
@@ -0,0 +1,161 @@
+/*
+* Copyright (c) 2015-2025 Progress Software Corporation and/or its subsidiaries or affiliates. All Rights Reserved.
+*/
+
+/// <reference path="../marklogic.d.ts" />
+
+/**
+ * Runtime validation tests for DatabaseClient convenience methods.
+ *
+ * These tests verify that the simplified convenience methods on DatabaseClient
+ * have correct TypeScript types and work as expected.
+ *
+ * Run with: npm run test:compile && npx mocha test-typescript/*.js
+ */
+
+const should = require('should');
+import type { DatabaseClient } from 'marklogic';
+
+const testConfig = require('../etc/test-config.js');
+const marklogic = require('../lib/marklogic.js');
+
+describe('DatabaseClient convenience methods runtime validation', function() {
+  let client: DatabaseClient;
+  const testUri = '/test-typescript/convenience-test.json';
+  const testContent = { message: 'Convenience method test', timestamp: Date.now() };
+
+  before(function() {
+    client = marklogic.createDatabaseClient(testConfig.restWriterConnection);
+  });
+
+  after(function() {
+    client.release();
+  });
+
+  it('should create collection with createCollection()', async function() {
+    const uris = await client.createCollection('typescript-convenience-test', testContent).result();
+
+    uris.should.be.an.Array();
+    uris.length.should.equal(1);
+    uris[0].should.be.a.String();
+  });
+
+  it('should probe document with probe()', async function() {
+    // Write a test document first
+    await client.documents.write({
+      uri: testUri,
+      content: testContent,
+      collections: ['typescript-convenience-test']
+    }).result();
+
+    const exists = await client.probe(testUri).result();
+
+    exists.should.be.a.Boolean();
+    exists.should.equal(true);
+  });
+
+  it('should read document with read()', async function() {
+    const contents = await client.read(testUri).result();
+
+    contents.should.be.an.Array();
+    contents.length.should.equal(1);
+    contents[0].should.have.property('message');
+  });
+
+  it('should query collection with queryCollection()', async function() {
+    const results = await client.queryCollection('typescript-convenience-test').result();
+
+    results.should.be.an.Array();
+    results.length.should.be.greaterThan(0);
+  });
+
+  it('should write collection with writeCollection()', async function() {
+    const uriMap = {
+      '/test-typescript/conv-1.json': { id: 1, name: 'Test 1' },
+      '/test-typescript/conv-2.json': { id: 2, name: 'Test 2' }
+    };
+
+    const uris = await client.writeCollection('typescript-convenience-test', uriMap).result();
+
+    uris.should.be.an.Array();
+    uris.length.should.equal(2);
+  });
+
+  it('should remove document with remove()', async function() {
+    const uris = await client.remove('/test-typescript/conv-1.json', '/test-typescript/conv-2.json').result();
+
+    uris.should.be.an.Array();
+    uris.length.should.equal(2);
+  });
+
+  it('should remove collection with removeCollection()', async function() {
+    const result = await client.removeCollection('typescript-convenience-test').result();
+
+    result.should.be.a.String();
+    result.should.equal('typescript-convenience-test');
+  });
+
+  it('should create timestamp with createTimestamp()', function() {
+    const ts1 = client.createTimestamp();
+    ts1.should.have.property('value');
+
+    const ts2 = client.createTimestamp('2025-11-25T12:00:00Z');
+    ts2.should.have.property('value');
+    if (ts2.value !== null) {
+      ts2.value.should.equal('2025-11-25T12:00:00Z');
+    }
+  });
+
+  it('should evaluate JavaScript with eval()', async function() {
+    const results = await client.eval('xdmp.toJSON({message: "Hello from eval"})').result();
+
+    results.should.be.an.Array();
+    results.length.should.equal(1);
+    results[0].should.have.property('format');
+    results[0].should.have.property('datatype');
+    results[0].should.have.property('value');
+    results[0].format.should.equal('json');
+    results[0].value.should.have.property('message');
+    results[0].value.message.should.equal('Hello from eval');
+  });
+
+  it('should evaluate JavaScript with variables', async function() {
+    const results = await client.eval(
+      'var x; xdmp.toJSON({result: x * 2})',
+      { x: 21 }
+    ).result();
+
+    results.should.be.an.Array();
+    results[0].value.result.should.equal(42);
+  });
+
+  it('should evaluate XQuery with xqueryEval()', async function() {
+    const results = await client.xqueryEval('"Hello from XQuery"').result();
+
+    results.should.be.an.Array();
+    results.length.should.equal(1);
+    results[0].format.should.equal('text');
+    results[0].datatype.should.equal('string');
+    results[0].value.should.equal('Hello from XQuery');
+  });
+
+  it('should evaluate XQuery with variables', async function() {
+    const results = await client.xqueryEval(
+      'declare variable $x as xs:integer external; $x * 3',
+      { x: 14 }
+    ).result();
+
+    results.should.be.an.Array();
+    results[0].value.should.equal(42);
+  });
+
+  it('should invoke a module with invoke()', async function() {
+    const results = await client.invoke('/hello.xqy').result();
+
+    results.should.be.an.Array();
+    results.length.should.equal(1);
+    results[0].should.have.property('format');
+    results[0].should.have.property('value');
+    results[0].value.should.be.a.String();
+  });
+});
diff --git a/typescript-test-project/test.ts b/typescript-test-project/test.ts
index 53667f01..aa508e67 100644
--- a/typescript-test-project/test.ts
+++ b/typescript-test-project/test.ts
@@ -56,6 +56,17 @@ async function run() {
 
       const wipeResult = await client.documents.wipe({uri: temporalUri, temporalCollection: temporalCollection}).result();
       console.log('wipe', wipeResult);
+
+      // Try out eval / invoke
+      const evalResult = await client.eval('fn.currentDateTime()').result();
+      console.log('eval', evalResult);
+
+      const xqueryEvalResult = await client.xqueryEval('fn:current-dateTime()').result();
+      console.log('xqueryEval', xqueryEvalResult);
+
+      const invokeResult = await client.invoke('/hello.xqy').result();
+      console.log('invoke', invokeResult);
+
     } else {
       console.error(`❌ Connection failed: ${result.httpStatusCode} - ${result.httpStatusMessage}`);
       process.exit(1);