fix: Convert permission modes to camelCase for CLI compatibility

- Fixed permission mode conversion to use camelCase format
- :bypass_permissions now correctly converts to "bypassPermissions"
- :accept_edits now correctly converts to "acceptEdits"
- Added format_permission_mode method to handle conversions
- Added tests to verify correct camelCase conversion
- Added example showing bypass permissions usage
- Bumped version to 0.1.1

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: parruda

CHANGELOG.md

@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.1.1] - 2025-07-15
+
+### Fixed
+- Fixed permission mode conversion to use camelCase format for CLI compatibility
+  - `:bypass_permissions` now correctly converts to `"bypassPermissions"`
+  - `:accept_edits` now correctly converts to `"acceptEdits"`
+  - This ensures the SDK properly passes permission modes to the Claude CLI
+
 ## [0.1.0] - 2025-07-15
 
 ### Added
@@ -36,5 +44,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - simplecov (~> 0.22)
 - yard (~> 0.9)
 
-[Unreleased]: https://github.com/parruda/claude-code-sdk-ruby/compare/v0.1.0...HEAD
+[Unreleased]: https://github.com/parruda/claude-code-sdk-ruby/compare/v0.1.1...HEAD
+[0.1.1]: https://github.com/parruda/claude-code-sdk-ruby/compare/v0.1.0...v0.1.1
 [0.1.0]: https://github.com/parruda/claude-code-sdk-ruby/releases/tag/v0.1.0

examples/bypass_permissions.rb

@@ -0,0 +1,34 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+require "claude_sdk"
+
+# Example showing how to use bypass permissions mode
+# This will pass --permission-mode bypassPermissions to the CLI
+
+options = ClaudeSDK::ClaudeCodeOptions.new(
+  permission_mode: :bypass_permissions
+)
+
+client = ClaudeSDK::Client.new(options)
+
+begin
+  response = client.query("List the files in the current directory")
+  
+  response.each do |message|
+    if message["type"] == "user"
+      puts "User: #{message["content"]}"
+    elsif message["type"] == "assistant"
+      message["content"].each do |block|
+        if block["type"] == "text"
+          puts "Assistant: #{block["text"]}"
+        end
+      end
+    end
+  end
+rescue ClaudeSDK::CLINotFoundError => e
+  puts "Error: #{e.message}"
+  puts "Please install Claude Code CLI first"
+rescue StandardError => e
+  puts "Error: #{e.message}"
+end

lib/claude_sdk/internal/transport/subprocess_cli.rb

@@ -334,7 +334,7 @@ def build_command
           cmd.push("--permission-prompt-tool", @options.permission_prompt_tool_name)
         end
 
-        cmd.push("--permission-mode", @options.permission_mode.to_s) if @options.permission_mode
+        cmd.push("--permission-mode", format_permission_mode(@options.permission_mode)) if @options.permission_mode
 
         cmd.push("--continue") if @options.continue_conversation
 
@@ -357,6 +357,23 @@ def serialize_mcp_servers
           server.respond_to?(:to_h) ? server.to_h : server
         end
       end
+
+      # Convert permission mode from Ruby symbol format to CLI camelCase format
+      #
+      # @param mode [Symbol] the permission mode symbol
+      # @return [String] the camelCase formatted mode
+      def format_permission_mode(mode)
+        case mode
+        when :default
+          "default"
+        when :accept_edits
+          "acceptEdits"
+        when :bypass_permissions
+          "bypassPermissions"
+        else
+          mode.to_s
+        end
+      end
     end
   end
 end

lib/claude_sdk/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module ClaudeSDK
-  VERSION = "0.1.0"
+  VERSION = "0.1.1"
 end

spec/claude_sdk/internal/subprocess_cli_spec.rb

@@ -73,7 +73,7 @@
       expect(cmd).to(include("--allowedTools", "Read,Write"))
       expect(cmd).to(include("--disallowedTools", "Bash"))
       expect(cmd).to(include("--model", "claude-3-5-sonnet"))
-      expect(cmd).to(include("--permission-mode", "accept_edits"))
+      expect(cmd).to(include("--permission-mode", "acceptEdits"))
       expect(cmd).to(include("--max-turns", "5"))
     end
 
@@ -94,6 +94,44 @@
       expect(cmd).to(include("--continue"))
       expect(cmd).to(include("--resume", "session-123"))
     end
+
+    it "converts permission modes to camelCase" do
+      # Test bypass_permissions
+      options = ClaudeSDK::ClaudeCodeOptions.new(
+        permission_mode: :bypass_permissions,
+      )
+      transport = described_class.new(
+        prompt: "test",
+        options: options,
+        cli_path: cli_path,
+      )
+      cmd = transport.send(:build_command)
+      expect(cmd).to(include("--permission-mode", "bypassPermissions"))
+
+      # Test accept_edits
+      options = ClaudeSDK::ClaudeCodeOptions.new(
+        permission_mode: :accept_edits,
+      )
+      transport = described_class.new(
+        prompt: "test",
+        options: options,
+        cli_path: cli_path,
+      )
+      cmd = transport.send(:build_command)
+      expect(cmd).to(include("--permission-mode", "acceptEdits"))
+
+      # Test default
+      options = ClaudeSDK::ClaudeCodeOptions.new(
+        permission_mode: :default,
+      )
+      transport = described_class.new(
+        prompt: "test",
+        options: options,
+        cli_path: cli_path,
+      )
+      cmd = transport.send(:build_command)
+      expect(cmd).to(include("--permission-mode", "default"))
+    end
   end
 
   describe "#connect and #disconnect" do