diff --git a/cmd/serve/tools.go b/cmd/serve/tools.go
index 1cd9292..572149d 100644
--- a/cmd/serve/tools.go
+++ b/cmd/serve/tools.go
@@ -359,7 +359,7 @@ func registerStaticTools(server *mcp.Server, f *cmdutil.Factory) {
 	// workflow_delete -- DELETE /api/workflows/{id}
 	server.AddTool(&mcp.Tool{
 		Name:        "workflow_delete",
-		Description: "Delete a workflow by ID",
+		Description: "Delete a workflow by ID. Use force=true to delete workflows that have execution history.",
 		InputSchema: map[string]any{
 			"type": "object",
 			"properties": map[string]any{
@@ -367,11 +367,19 @@ func registerStaticTools(server *mcp.Server, f *cmdutil.Factory) {
 					"type":        "string",
 					"description": "The workflow ID to delete",
 				},
+				"force": map[string]any{
+					"type":        "boolean",
+					"description": "Force delete even if the workflow has execution history. This will permanently delete all runs and logs.",
+				},
 			},
 			"required": []string{"workflow_id"},
 		},
 	}, makeStaticHandler(f, http.MethodDelete, func(args map[string]any, baseURL string) string {
-		return baseURL + "/api/workflows/" + getStringArg(args, "workflow_id")
+		u := baseURL + "/api/workflows/" + getStringArg(args, "workflow_id")
+		if force, ok := args["force"]; ok && force == true {
+			u += "?force=true"
+		}
+		return u
 	}, nil))
 
 	// workflow_execute -- POST /api/workflow/{id}/execute
diff --git a/cmd/workflow/delete.go b/cmd/workflow/delete.go
index 47698c4..dc10889 100644
--- a/cmd/workflow/delete.go
+++ b/cmd/workflow/delete.go
@@ -24,17 +24,22 @@ func NewDeleteCmd(f *cmdutil.Factory) *cobra.Command {
   kh wf delete abc123
 
   # Delete without prompting
-  kh wf delete abc123 --yes`,
+  kh wf delete abc123 --yes
+
+  # Force delete a workflow that has execution history
+  kh wf delete abc123 --force`,
 		RunE: func(cmd *cobra.Command, args []string) error {
 			workflowID := args[0]
 
-			yes, err := cmd.Flags().GetBool("yes")
-			if err != nil {
-				yes = false
-			}
+			force, _ := cmd.Flags().GetBool("force")
+			yes, _ := cmd.Flags().GetBool("yes")
 
 			if !yes && f.IOStreams.IsTerminal() {
-				fmt.Fprintf(f.IOStreams.Out, "Delete workflow %s? This cannot be undone. (y/N) ", workflowID)
+				prompt := fmt.Sprintf("Delete workflow %s? This cannot be undone. (y/N) ", workflowID)
+				if force {
+					prompt = fmt.Sprintf("Force delete workflow %s and all its execution history? This cannot be undone. (y/N) ", workflowID)
+				}
+				fmt.Fprint(f.IOStreams.Out, prompt)
 				scanner := bufio.NewScanner(f.IOStreams.In)
 				if scanner.Scan() {
 					answer := strings.TrimSpace(strings.ToLower(scanner.Text()))
@@ -55,6 +60,9 @@ func NewDeleteCmd(f *cmdutil.Factory) *cobra.Command {
 			host := cmdutil.ResolveHost(cmd, cfg)
 
 			url := khhttp.BuildBaseURL(host) + "/api/workflows/" + workflowID
+			if force {
+				url += "?force=true"
+			}
 			req, err := client.NewRequest(http.MethodDelete, url, nil)
 			if err != nil {
 				return err
@@ -62,15 +70,16 @@ func NewDeleteCmd(f *cmdutil.Factory) *cobra.Command {
 
 			resp, err := client.Do(req)
 			if err != nil {
-				return fmt.Errorf("cannot delete workflow %s: it may have existing runs that prevent deletion", workflowID)
+				return fmt.Errorf("cannot delete workflow %s: %w", workflowID, err)
 			}
 			defer resp.Body.Close()
 
 			if resp.StatusCode == http.StatusNotFound {
 				return cmdutil.NotFoundError{Err: fmt.Errorf("workflow %q not found", workflowID)}
 			}
-			if resp.StatusCode == http.StatusInternalServerError {
-				return fmt.Errorf("cannot delete workflow %s: workflow has existing runs that prevent deletion", workflowID)
+			if resp.StatusCode == http.StatusConflict && !force {
+				fmt.Fprintf(f.IOStreams.ErrOut, "Workflow has execution history. Use --force to delete the workflow and all its runs.\n")
+				return fmt.Errorf("workflow %s has existing runs that prevent deletion", workflowID)
 			}
 			if resp.StatusCode != http.StatusOK {
 				return khhttp.NewAPIError(resp)
@@ -90,6 +99,7 @@ func NewDeleteCmd(f *cmdutil.Factory) *cobra.Command {
 	}
 
 	cmd.Flags().BoolP("yes", "y", false, "Skip confirmation prompt")
+	cmd.Flags().Bool("force", false, "Force delete even if workflow has execution history")
 
 	return cmd
 }
diff --git a/docs/kh_workflow.md b/docs/kh_workflow.md
index 471d3fe..d6acd5d 100644
--- a/docs/kh_workflow.md
+++ b/docs/kh_workflow.md
@@ -31,6 +31,7 @@ Manage workflows
 ### SEE ALSO
 
 * [kh](kh.md)	 - KeeperHub CLI
+* [kh workflow delete](kh_workflow_delete.md)	 - Delete a workflow
 * [kh workflow get](kh_workflow_get.md)	 - Get a workflow
 * [kh workflow go-live](kh_workflow_go-live.md)	 - Publish a workflow
 * [kh workflow list](kh_workflow_list.md)	 - List workflows
diff --git a/docs/kh_workflow_delete.md b/docs/kh_workflow_delete.md
new file mode 100644
index 0000000..df18c83
--- /dev/null
+++ b/docs/kh_workflow_delete.md
@@ -0,0 +1,41 @@
+## kh workflow delete
+
+Delete a workflow
+
+```
+kh workflow delete <workflow-id> [flags]
+```
+
+### Examples
+
+```
+  # Delete a workflow (will prompt for confirmation)
+  kh wf delete abc123
+
+  # Delete without prompting
+  kh wf delete abc123 --yes
+
+  # Force delete a workflow that has execution history
+  kh wf delete abc123 --force
+```
+
+### Options
+
+```
+      --force   Force delete even if workflow has execution history
+  -h, --help    help for delete
+  -y, --yes     Skip confirmation prompt
+```
+
+### Options inherited from parent commands
+
+```
+  -H, --host string   KeeperHub host (default: app.keeperhub.com)
+      --jq string     Filter JSON output with a jq expression
+      --json          Output as JSON
+      --no-color      Disable color output
+```
+
+### SEE ALSO
+
+* [kh workflow](kh_workflow.md)	 - Manage workflows