diff --git a/src/tools/repositories.ts b/src/tools/repositories.ts
index 9f10e235..0acdd962 100644
--- a/src/tools/repositories.ts
+++ b/src/tools/repositories.ts
@@ -930,10 +930,11 @@ function configureRepoTools(server: McpServer, tokenProvider: () => Promise<stri
 
   server.tool(
     REPO_TOOLS.search_commits,
-    "Searches for commits in a repository",
+    "Search for commits in a repository with comprehensive filtering capabilities. Supports searching by description/comment text, time range, author, committer, specific commit IDs, and more. This is the unified tool for all commit search operations.",
     {
       project: z.string().describe("Project name or ID"),
       repository: z.string().describe("Repository name or ID"),
+      // Existing parameters
       fromCommit: z.string().optional().describe("Starting commit ID"),
       toCommit: z.string().optional().describe("Ending commit ID"),
       version: z.string().optional().describe("The name of the branch, tag or commit to filter commits by"),
@@ -946,12 +947,83 @@ function configureRepoTools(server: McpServer, tokenProvider: () => Promise<stri
       top: z.number().optional().default(10).describe("Maximum number of commits to return"),
       includeLinks: z.boolean().optional().default(false).describe("Include commit links"),
       includeWorkItems: z.boolean().optional().default(false).describe("Include associated work items"),
+      // Enhanced search parameters
+      searchText: z.string().optional().describe("Search text to filter commits by description/comment. Supports partial matching."),
+      author: z.string().optional().describe("Filter commits by author email or display name"),
+      authorEmail: z.string().optional().describe("Filter commits by exact author email address"),
+      committer: z.string().optional().describe("Filter commits by committer email or display name"),
+      committerEmail: z.string().optional().describe("Filter commits by exact committer email address"),
+      fromDate: z.string().optional().describe("Filter commits from this date (ISO 8601 format, e.g., '2024-01-01T00:00:00Z')"),
+      toDate: z.string().optional().describe("Filter commits to this date (ISO 8601 format, e.g., '2024-12-31T23:59:59Z')"),
+      commitIds: z.array(z.string()).optional().describe("Array of specific commit IDs to retrieve. When provided, other filters are ignored except top/skip."),
+      historySimplificationMode: z.enum(["FirstParent", "SimplifyMerges", "FullHistory", "FullHistorySimplifyMerges"]).optional().describe("How to simplify the commit history"),
     },
-    async ({ project, repository, fromCommit, toCommit, version, versionType, skip, top, includeLinks, includeWorkItems }) => {
+    async ({
+      project,
+      repository,
+      fromCommit,
+      toCommit,
+      version,
+      versionType,
+      skip,
+      top,
+      includeLinks,
+      includeWorkItems,
+      searchText,
+      author,
+      authorEmail,
+      committer,
+      committerEmail,
+      fromDate,
+      toDate,
+      commitIds,
+      historySimplificationMode,
+    }) => {
       try {
         const connection = await connectionProvider();
         const gitApi = await connection.getGitApi();
 
+        // If specific commit IDs are provided, use getCommits with commit ID filtering
+        if (commitIds && commitIds.length > 0) {
+          const commits = [];
+          const batchSize = Math.min(top || 10, commitIds.length);
+          const startIndex = skip || 0;
+          const endIndex = Math.min(startIndex + batchSize, commitIds.length);
+
+          // Process commits in the requested range
+          const requestedCommitIds = commitIds.slice(startIndex, endIndex);
+
+          // Use getCommits for each commit ID to maintain consistency
+          for (const commitId of requestedCommitIds) {
+            try {
+              const searchCriteria: GitQueryCommitsCriteria = {
+                includeLinks: includeLinks,
+                includeWorkItems: includeWorkItems,
+                fromCommitId: commitId,
+                toCommitId: commitId,
+              };
+
+              const commitResults = await gitApi.getCommits(repository, searchCriteria, project, 0, 1);
+
+              if (commitResults && commitResults.length > 0) {
+                commits.push(commitResults[0]);
+              }
+            } catch (error) {
+              // Log error but continue with other commits
+              console.warn(`Failed to retrieve commit ${commitId}: ${error instanceof Error ? error.message : String(error)}`);
+              // Add error information to result instead of failing completely
+              commits.push({
+                commitId: commitId,
+                error: `Failed to retrieve: ${error instanceof Error ? error.message : String(error)}`,
+              });
+            }
+          }
+
+          return {
+            content: [{ type: "text", text: JSON.stringify(commits, null, 2) }],
+          };
+        }
+
         const searchCriteria: GitQueryCommitsCriteria = {
           fromCommitId: fromCommit,
           toCommitId: toCommit,
@@ -959,6 +1031,26 @@ function configureRepoTools(server: McpServer, tokenProvider: () => Promise<stri
           includeWorkItems: includeWorkItems,
         };
 
+        // Add author filter
+        if (author) {
+          searchCriteria.author = author;
+        }
+
+        // Add date range filters (ADO API expects ISO string format)
+        if (fromDate) {
+          searchCriteria.fromDate = fromDate;
+        }
+        if (toDate) {
+          searchCriteria.toDate = toDate;
+        }
+
+        // Add history simplification if specified
+        if (historySimplificationMode) {
+          // Note: This parameter might not be directly supported by all ADO API versions
+          // but we'll include it in the criteria for forward compatibility
+          (searchCriteria as any).historySimplificationMode = historySimplificationMode;
+        }
+
         if (version) {
           const itemVersion: GitVersionDescriptor = {
             version: version,
@@ -967,16 +1059,35 @@ function configureRepoTools(server: McpServer, tokenProvider: () => Promise<stri
           searchCriteria.itemVersion = itemVersion;
         }
 
-        const commits = await gitApi.getCommits(
-          repository,
-          searchCriteria,
-          project,
-          skip, // skip
-          top
-        );
+        const commits = await gitApi.getCommits(repository, searchCriteria, project, skip, top);
+
+        // Additional client-side filtering for enhanced search capabilities
+        let filteredCommits = commits;
+
+        // Filter by search text in commit message if not handled by API
+        if (searchText && filteredCommits) {
+          filteredCommits = filteredCommits.filter((commit) => commit.comment?.toLowerCase().includes(searchText.toLowerCase()));
+        }
+
+        // Filter by author email if specified
+        if (authorEmail && filteredCommits) {
+          filteredCommits = filteredCommits.filter((commit) => commit.author?.email?.toLowerCase() === authorEmail.toLowerCase());
+        }
+
+        // Filter by committer if specified
+        if (committer && filteredCommits) {
+          filteredCommits = filteredCommits.filter(
+            (commit) => commit.committer?.name?.toLowerCase().includes(committer.toLowerCase()) || commit.committer?.email?.toLowerCase().includes(committer.toLowerCase())
+          );
+        }
+
+        // Filter by committer email if specified
+        if (committerEmail && filteredCommits) {
+          filteredCommits = filteredCommits.filter((commit) => commit.committer?.email?.toLowerCase() === committerEmail.toLowerCase());
+        }
 
         return {
-          content: [{ type: "text", text: JSON.stringify(commits, null, 2) }],
+          content: [{ type: "text", text: JSON.stringify(filteredCommits, null, 2) }],
         };
       } catch (error) {
         return {
diff --git a/test/src/tools/repositories.test.ts b/test/src/tools/repositories.test.ts
index e1989fd5..3f8c8e4c 100644
--- a/test/src/tools/repositories.test.ts
+++ b/test/src/tools/repositories.test.ts
@@ -4244,4 +4244,100 @@ describe("repos tools", () => {
       expect(result.content[0].text).toBe(JSON.stringify(mockThread, null, 2));
     });
   });
+
+  describe("enhanced commit search functions", () => {
+    describe("repo_search_commits enhanced functionality", () => {
+      it("should search commits with enhanced filters", async () => {
+        configureRepoTools(server, tokenProvider, connectionProvider, userAgentProvider);
+
+        const call = (server.tool as jest.Mock).mock.calls.find(([toolName]) => toolName === REPO_TOOLS.search_commits);
+        if (!call) throw new Error("repo_search_commits tool not registered");
+        const [, , , handler] = call;
+
+        const mockCommits = [
+          {
+            commitId: "abc123",
+            comment: "Fix bug in authentication",
+            author: { name: "John Doe", email: "john@example.com" },
+            committer: { name: "John Doe", email: "john@example.com" },
+            push: { date: "2023-01-01T00:00:00Z" },
+          },
+        ];
+        mockGitApi.getCommits.mockResolvedValue(mockCommits);
+
+        const params = {
+          project: "test-project",
+          repository: "test-repo",
+          searchText: "authentication",
+          author: "John Doe",
+          fromDate: "2023-01-01T00:00:00Z",
+          toDate: "2023-12-31T23:59:59Z",
+          top: 10,
+        };
+
+        const result = await handler(params);
+
+        expect(mockGitApi.getCommits).toHaveBeenCalledWith(
+          "test-repo",
+          expect.objectContaining({
+            author: "John Doe",
+            fromDate: "2023-01-01T00:00:00Z",
+            toDate: "2023-12-31T23:59:59Z",
+          }),
+          "test-project",
+          undefined,
+          10
+        );
+
+        expect(result.content[0].text).toBe(JSON.stringify(mockCommits, null, 2));
+      });
+
+      it("should retrieve specific commits by IDs", async () => {
+        configureRepoTools(server, tokenProvider, connectionProvider, userAgentProvider);
+
+        const call = (server.tool as jest.Mock).mock.calls.find(([toolName]) => toolName === REPO_TOOLS.search_commits);
+        if (!call) throw new Error("repo_search_commits tool not registered");
+        const [, , , handler] = call;
+
+        const mockCommit1 = { commitId: "abc123", comment: "First commit" };
+        const mockCommit2 = { commitId: "def456", comment: "Second commit" };
+
+        mockGitApi.getCommits.mockResolvedValueOnce([mockCommit1]).mockResolvedValueOnce([mockCommit2]);
+
+        const params = {
+          project: "test-project",
+          repository: "test-repo",
+          commitIds: ["abc123", "def456"],
+          top: 10,
+        };
+
+        const result = await handler(params);
+
+        expect(mockGitApi.getCommits).toHaveBeenCalledTimes(2);
+        expect(mockGitApi.getCommits).toHaveBeenCalledWith(
+          "test-repo",
+          expect.objectContaining({
+            fromCommitId: "abc123",
+            toCommitId: "abc123",
+          }),
+          "test-project",
+          0,
+          1
+        );
+        expect(mockGitApi.getCommits).toHaveBeenCalledWith(
+          "test-repo",
+          expect.objectContaining({
+            fromCommitId: "def456",
+            toCommitId: "def456",
+          }),
+          "test-project",
+          0,
+          1
+        );
+
+        const expectedCommits = [mockCommit1, mockCommit2];
+        expect(result.content[0].text).toBe(JSON.stringify(expectedCommits, null, 2));
+      });
+    });
+  });
 });