diff --git a/pkg/tests/runner_test.go b/pkg/tests/runner_test.go
index 9941aad0..5f05d6ec 100644
--- a/pkg/tests/runner_test.go
+++ b/pkg/tests/runner_test.go
@@ -678,6 +678,13 @@ func TestContextArg(t *testing.T) {
 	assert.Equal(t, "TEST RESULT CALL: 1", x)
 }
 
+func TestToolAs(t *testing.T) {
+	runner := tester.NewRunner(t)
+	x, err := runner.Run("", `{}`)
+	require.NoError(t, err)
+	assert.Equal(t, "TEST RESULT CALL: 1", x)
+}
+
 func TestCwd(t *testing.T) {
 	runner := tester.NewRunner(t)
 
diff --git a/pkg/tests/testdata/TestToolAs/call1.golden b/pkg/tests/testdata/TestToolAs/call1.golden
new file mode 100644
index 00000000..390abe3b
--- /dev/null
+++ b/pkg/tests/testdata/TestToolAs/call1.golden
@@ -0,0 +1,67 @@
+`{
+  "Model": "gpt-4-turbo",
+  "InternalSystemPrompt": null,
+  "Tools": [
+    {
+      "function": {
+        "toolID": "testdata/TestToolAs/test.gpt:6",
+        "name": "local",
+        "parameters": {
+          "properties": {
+            "defaultPromptParameter": {
+              "description": "Prompt to send to the tool or assistant. This may be instructions or question.",
+              "type": "string"
+            }
+          },
+          "required": [
+            "defaultPromptParameter"
+          ],
+          "type": "object"
+        }
+      }
+    },
+    {
+      "function": {
+        "toolID": "testdata/TestToolAs/other.gpt:1",
+        "name": "remote",
+        "parameters": {
+          "properties": {
+            "defaultPromptParameter": {
+              "description": "Prompt to send to the tool or assistant. This may be instructions or question.",
+              "type": "string"
+            }
+          },
+          "required": [
+            "defaultPromptParameter"
+          ],
+          "type": "object"
+        }
+      }
+    }
+  ],
+  "Messages": [
+    {
+      "role": "system",
+      "content": [
+        {
+          "text": "A tool"
+        }
+      ],
+      "usage": {}
+    },
+    {
+      "role": "user",
+      "content": [
+        {
+          "text": "{}"
+        }
+      ],
+      "usage": {}
+    }
+  ],
+  "MaxTokens": 0,
+  "Temperature": null,
+  "JSONResponse": false,
+  "Grammar": "",
+  "Cache": null
+}`
diff --git a/pkg/tests/testdata/TestToolAs/other.gpt b/pkg/tests/testdata/TestToolAs/other.gpt
new file mode 100644
index 00000000..a0a4c910
--- /dev/null
+++ b/pkg/tests/testdata/TestToolAs/other.gpt
@@ -0,0 +1 @@
+other file
\ No newline at end of file
diff --git a/pkg/tests/testdata/TestToolAs/test.gpt b/pkg/tests/testdata/TestToolAs/test.gpt
new file mode 100644
index 00000000..0417f4a4
--- /dev/null
+++ b/pkg/tests/testdata/TestToolAs/test.gpt
@@ -0,0 +1,8 @@
+tools: infile as local, ./other.gpt as remote
+
+A tool
+
+---
+name: infile
+
+infile tool
\ No newline at end of file
diff --git a/pkg/types/tool.go b/pkg/types/tool.go
index e698bdc4..8085db0c 100644
--- a/pkg/types/tool.go
+++ b/pkg/types/tool.go
@@ -57,6 +57,7 @@ func (p Program) ChatName() string {
 }
 
 type ToolReference struct {
+	Named     string
 	Reference string
 	Arg       string
 	ToolID    string
@@ -184,9 +185,14 @@ func SplitArg(hasArg string) (prefix, arg string) {
 	var (
 		fields = strings.Fields(hasArg)
 		idx    = slices.Index(fields, "with")
+		asIdx  = slices.Index(fields, "as")
 	)
 
 	if idx == -1 {
+		if asIdx != -1 {
+			return strings.Join(fields[:asIdx], " "),
+				strings.Join(fields[asIdx:], " ")
+		}
 		return strings.TrimSpace(hasArg), ""
 	}
 
@@ -201,7 +207,12 @@ func (t Tool) GetToolRefsFromNames(names []string) (result []ToolReference, _ er
 			return nil, NewErrToolNotFound(toolName)
 		}
 		_, arg := SplitArg(toolName)
+		named, ok := strings.CutPrefix(arg, "as ")
+		if !ok {
+			named = ""
+		}
 		result = append(result, ToolReference{
+			Named:     named,
 			Arg:       arg,
 			Reference: toolName,
 			ToolID:    toolID,
@@ -287,8 +298,13 @@ func (t Tool) String() string {
 func (t Tool) GetCompletionTools(prg Program) (result []CompletionTool, err error) {
 	toolNames := map[string]struct{}{}
 
-	for _, subToolName := range t.Parameters.Tools {
-		result, err = appendTool(result, prg, t, subToolName, toolNames)
+	subToolRefs, err := t.GetToolRefsFromNames(t.Parameters.Tools)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, subToolRef := range subToolRefs {
+		result, err = appendTool(result, prg, t, subToolRef.Reference, toolNames, subToolRef.Named)
 		if err != nil {
 			return nil, err
 		}
@@ -327,7 +343,7 @@ func appendExports(completionTools []CompletionTool, prg Program, parentTool Too
 	}
 
 	for _, export := range subTool.Export {
-		completionTools, err = appendTool(completionTools, prg, subTool, export, toolNames)
+		completionTools, err = appendTool(completionTools, prg, subTool, export, toolNames, "")
 		if err != nil {
 			return nil, err
 		}
@@ -336,7 +352,7 @@ func appendExports(completionTools []CompletionTool, prg Program, parentTool Too
 	return completionTools, nil
 }
 
-func appendTool(completionTools []CompletionTool, prg Program, parentTool Tool, subToolName string, toolNames map[string]struct{}) ([]CompletionTool, error) {
+func appendTool(completionTools []CompletionTool, prg Program, parentTool Tool, subToolName string, toolNames map[string]struct{}, asName string) ([]CompletionTool, error) {
 	subTool, err := getTool(prg, parentTool, subToolName)
 	if err != nil {
 		return nil, err
@@ -356,10 +372,14 @@ func appendTool(completionTools []CompletionTool, prg Program, parentTool Tool,
 	if subTool.Instructions == "" {
 		log.Debugf("Skipping zero instruction tool %s (%s)", subToolName, subTool.ID)
 	} else {
+		name := subToolName
+		if asName != "" {
+			name = asName
+		}
 		completionTools = append(completionTools, CompletionTool{
 			Function: CompletionFunctionDefinition{
 				ToolID:      subTool.ID,
-				Name:        PickToolName(subToolName, toolNames),
+				Name:        PickToolName(name, toolNames),
 				Description: subTool.Parameters.Description,
 				Parameters:  args,
 			},
@@ -367,7 +387,7 @@ func appendTool(completionTools []CompletionTool, prg Program, parentTool Tool,
 	}
 
 	for _, export := range subTool.Export {
-		completionTools, err = appendTool(completionTools, prg, subTool, export, toolNames)
+		completionTools, err = appendTool(completionTools, prg, subTool, export, toolNames, "")
 		if err != nil {
 			return nil, err
 		}
diff --git a/pkg/types/toolname_test.go b/pkg/types/toolname_test.go
index da3b3a0e..6d276931 100644
--- a/pkg/types/toolname_test.go
+++ b/pkg/types/toolname_test.go
@@ -20,6 +20,12 @@ func TestParse(t *testing.T) {
 	tool, subTool := SplitToolRef("a from b with x")
 	autogold.Expect([]string{"b", "a"}).Equal(t, []string{tool, subTool})
 
+	tool, subTool = SplitToolRef("a from b with x as other")
+	autogold.Expect([]string{"b", "a"}).Equal(t, []string{tool, subTool})
+
 	tool, subTool = SplitToolRef("a with x")
 	autogold.Expect([]string{"a", ""}).Equal(t, []string{tool, subTool})
+
+	tool, subTool = SplitToolRef("a with x as other")
+	autogold.Expect([]string{"a", ""}).Equal(t, []string{tool, subTool})
 }