diff --git a/app/services/mcp_tools/search_portfolios.rb b/app/services/mcp_tools/search_portfolios.rb
index 729af0102b8..ae5504f4b8d 100644
--- a/app/services/mcp_tools/search_portfolios.rb
+++ b/app/services/mcp_tools/search_portfolios.rb
@@ -48,7 +48,7 @@ module McpTools
       type: :object,
       properties: {
         name: { type: "string", description: "Name of the portfolio. Accepts partial names, not case-sensitive." },
-        identifier: { type: "string", description: "Portfolio identifier. Case-insensitive, matching exactly." },
+        identifier: { type: "string", description: "Portfolio identifier. Case-sensitive, matching exactly." },
         status_code: { type: "string", enum: Project.status_codes.keys, description: "The portfolio status." }
       }
     )
diff --git a/app/services/mcp_tools/search_programs.rb b/app/services/mcp_tools/search_programs.rb
index c88471e9478..d66a8121271 100644
--- a/app/services/mcp_tools/search_programs.rb
+++ b/app/services/mcp_tools/search_programs.rb
@@ -48,7 +48,7 @@ module McpTools
       type: :object,
       properties: {
         name: { type: "string", description: "Name of the program. Accepts partial names, not case-sensitive." },
-        identifier: { type: "string", description: "Program identifier. Case-insensitive, matching exactly." },
+        identifier: { type: "string", description: "Program identifier. Case-sensitive, matching exactly." },
         status_code: { type: "string", enum: Project.status_codes.keys, description: "The program status." }
       }
     )
diff --git a/app/services/mcp_tools/search_projects.rb b/app/services/mcp_tools/search_projects.rb
index f8a2b7e1815..4801b79dcb8 100644
--- a/app/services/mcp_tools/search_projects.rb
+++ b/app/services/mcp_tools/search_projects.rb
@@ -48,7 +48,7 @@ module McpTools
       type: :object,
       properties: {
         name: { type: "string", description: "Name of the project. Accepts partial project names, not case-sensitive." },
-        identifier: { type: "string", description: "Project identifier. Case-insensitive, matching exactly." },
+        identifier: { type: "string", description: "Project identifier. Case-sensitive, matching exactly." },
         status_code: { type: "string", enum: Project.status_codes.keys, description: "The project status." }
       }
     )
diff --git a/spec/requests/mcp/mcp_tools/search_portfolios_spec.rb b/spec/requests/mcp/mcp_tools/search_portfolios_spec.rb
index 06d3288e95c..e59271369f6 100644
--- a/spec/requests/mcp/mcp_tools/search_portfolios_spec.rb
+++ b/spec/requests/mcp/mcp_tools/search_portfolios_spec.rb
@@ -84,22 +84,18 @@ RSpec.describe McpTools::SearchPortfolios, with_flag: { mcp_server: true } do
     context "when passing an exact identifier" do
       let(:call_args) { { identifier: "abc" } }
 
-      it "finds only the matching portfolio" do
+      it "finds the portfolio" do
         subject
-        items = parsed_results.dig("structuredContent", "items")
-        expect(items.size).to eq(1)
-        expect(items.first).to include("identifier" => "abc")
+        expect(parsed_results.dig("structuredContent", "items")).to be_present
       end
     end
 
-    context "when passing a case-variant identifier" do
+    context "when passing a non-exact identifier" do
       let(:call_args) { { identifier: "Abc" } }
 
-      it "finds only the matching portfolio (case-insensitive)" do
+      it "does not find the portfolio" do
         subject
-        items = parsed_results.dig("structuredContent", "items")
-        expect(items.size).to eq(1)
-        expect(items.first).to include("identifier" => "abc")
+        expect(parsed_results.dig("structuredContent", "items")).to be_empty
       end
     end
 
diff --git a/spec/requests/mcp/mcp_tools/search_programs_spec.rb b/spec/requests/mcp/mcp_tools/search_programs_spec.rb
index 54d50559dd0..e59b3ad50c2 100644
--- a/spec/requests/mcp/mcp_tools/search_programs_spec.rb
+++ b/spec/requests/mcp/mcp_tools/search_programs_spec.rb
@@ -84,22 +84,18 @@ RSpec.describe McpTools::SearchPrograms, with_flag: { mcp_server: true } do
     context "when passing an exact identifier" do
       let(:call_args) { { identifier: "abc" } }
 
-      it "finds only the matching program" do
+      it "finds the program" do
         subject
-        items = parsed_results.dig("structuredContent", "items")
-        expect(items.size).to eq(1)
-        expect(items.first).to include("identifier" => "abc")
+        expect(parsed_results.dig("structuredContent", "items")).to be_present
       end
     end
 
-    context "when passing a case-variant identifier" do
+    context "when passing a non-exact identifier" do
       let(:call_args) { { identifier: "Abc" } }
 
-      it "finds only the matching program (case-insensitive)" do
+      it "does not find the program" do
         subject
-        items = parsed_results.dig("structuredContent", "items")
-        expect(items.size).to eq(1)
-        expect(items.first).to include("identifier" => "abc")
+        expect(parsed_results.dig("structuredContent", "items")).to be_empty
       end
     end
 
diff --git a/spec/requests/mcp/mcp_tools/search_projects_spec.rb b/spec/requests/mcp/mcp_tools/search_projects_spec.rb
index 2b1bf05a835..86865edf129 100644
--- a/spec/requests/mcp/mcp_tools/search_projects_spec.rb
+++ b/spec/requests/mcp/mcp_tools/search_projects_spec.rb
@@ -83,22 +83,18 @@ RSpec.describe McpTools::SearchProjects, with_flag: { mcp_server: true } do
     context "when passing an exact identifier" do
       let(:call_args) { { identifier: "abc" } }
 
-      it "finds only the matching project" do
+      it "finds the project" do
         subject
-        items = parsed_results.dig("structuredContent", "items")
-        expect(items.size).to eq(1)
-        expect(items.first).to include("identifier" => "abc")
+        expect(parsed_results.dig("structuredContent", "items")).to be_present
       end
     end
 
-    context "when passing a case-variant identifier" do
+    context "when passing a non-exact identifier" do
       let(:call_args) { { identifier: "Abc" } }
 
-      it "finds only the matching project (case-insensitive)" do
+      it "does not find the project" do
         subject
-        items = parsed_results.dig("structuredContent", "items")
-        expect(items.size).to eq(1)
-        expect(items.first).to include("identifier" => "abc")
+        expect(parsed_results.dig("structuredContent", "items")).to be_empty
       end
     end