feat: implement Claude Code GitHub Action v1.0 with auto-detection and slash commands

.github/workflows/claude-test.yml

@@ -0,0 +1,38 @@
+# Test workflow for km-anthropic fork (v1-dev branch)
+# This tests the fork implementation, not the main repo
+name: Claude Code (Fork Test)
+
+on:
+  issue_comment:
+    types: [created]
+  pull_request_review_comment:
+    types: [created]
+  issues:
+    types: [opened, assigned]
+  pull_request_review:
+    types: [submitted]
+
+jobs:
+  claude:
+    if: |
+      (github.event_name == 'issue_comment' && contains(github.event.comment.body, '@claude')) ||
+      (github.event_name == 'pull_request_review_comment' && contains(github.event.comment.body, '@claude')) ||
+      (github.event_name == 'pull_request_review' && contains(github.event.review.body, '@claude')) ||
+      (github.event_name == 'issues' && (
+        contains(github.event.issue.body, '@claude') || 
+        contains(github.event.issue.title, '@claude')
+      ))
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+      issues: write
+      id-token: write # Required for OIDC token exchange
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Run Claude Code
+        uses: km-anthropic/claude-code-action@v1-dev
+        with:
+          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}

.github/workflows/issue-triage.yml

@@ -102,7 +102,6 @@ jobs:
           prompt_file: /tmp/claude-prompts/triage-prompt.txt
           allowed_tools: "Bash(gh label list),mcp__github__get_issue,mcp__github__get_issue_comments,mcp__github__update_issue,mcp__github__search_issues,mcp__github__list_issues"
           mcp_config: /tmp/mcp-config/mcp-servers.json
-          timeout_minutes: "5"
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/test-base-action.yml

@@ -25,7 +25,6 @@ jobs:
           prompt: ${{ github.event.inputs.test_prompt || 'List the files in the current directory starting with "package"' }}
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           allowed_tools: "LS,Read"
-          timeout_minutes: "3"
 
       - name: Verify inline prompt output
         run: |
@@ -83,7 +82,6 @@ jobs:
           prompt_file: "test-prompt.txt"
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           allowed_tools: "LS,Read"
-          timeout_minutes: "3"
 
       - name: Verify prompt file output
         run: |

.github/workflows/test-custom-executables.yml

@@ -53,7 +53,6 @@ jobs:
           path_to_claude_code_executable: /home/runner/.local/bin/claude
           path_to_bun_executable: /home/runner/.bun/bin/bun
           allowed_tools: "LS,Read"
-          timeout_minutes: "3"
 
       - name: Verify custom executables worked
         run: |

.github/workflows/test-settings.yml

@@ -26,7 +26,6 @@ jobs:
                 "allow": ["Bash(echo:*)"]
               }
             }
-          timeout_minutes: "2"
 
       - name: Verify echo worked
         run: |
@@ -76,7 +75,6 @@ jobs:
                 "deny": ["Bash(echo:*)"]
               }
             }
-          timeout_minutes: "2"
 
       - name: Verify echo was denied
         run: |
@@ -114,7 +112,6 @@ jobs:
             Use Bash to echo "Hello from settings file test"
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           settings: "test-settings.json"
-          timeout_minutes: "2"
 
       - name: Verify echo worked
         run: |
@@ -169,7 +166,6 @@ jobs:
             Use Bash to echo "This should not work from file"
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           settings: "test-settings.json"
-          timeout_minutes: "2"
 
       - name: Verify echo was denied
         run: |

CLAUDE.md

@@ -53,7 +53,7 @@ Execution steps:
 #### Mode System (`src/modes/`)
 
 - **Tag Mode** (`tag/`): Responds to `@claude` mentions and issue assignments
-- **Agent Mode** (`agent/`): Automated execution for workflow_dispatch and schedule events only
+- **Agent Mode** (`agent/`): Direct execution when explicit prompt is provided
 - Extensible registry pattern in `modes/registry.ts`
 
 #### GitHub Integration (`src/github/`)
@@ -118,7 +118,7 @@ src/
 
 - Modes implement `Mode` interface with `shouldTrigger()` and `prepare()` methods
 - Registry validates mode compatibility with GitHub event types
-- Agent mode only works with workflow_dispatch and schedule events
+- Agent mode triggers when explicit prompt is provided
 
 ### Comment Threading
 

README.md

@@ -2,30 +2,23 @@
 
 # Claude Code Action
 
-A general-purpose [Claude Code](https://claude.ai/code) action for GitHub PRs and issues that can answer questions and implement code changes. This action listens for a trigger phrase in comments and activates Claude act on the request. It supports multiple authentication methods including Anthropic direct API, Amazon Bedrock, and Google Vertex AI.
+A general-purpose [Claude Code](https://claude.ai/code) action for GitHub PRs and issues that can answer questions and implement code changes. This action intelligently detects when to activate based on your workflow context—whether responding to @claude mentions, issue assignments, or executing automation tasks with explicit prompts. It supports multiple authentication methods including Anthropic direct API, Amazon Bedrock, and Google Vertex AI.
 
 ## Features
 
+- 🎯 **Intelligent Mode Detection**: Automatically selects the appropriate execution mode based on your workflow context—no configuration needed
 - 🤖 **Interactive Code Assistant**: Claude can answer questions about code, architecture, and programming
 - 🔍 **Code Review**: Analyzes PR changes and suggests improvements
 - ✨ **Code Implementation**: Can implement simple fixes, refactoring, and even new features
 - 💬 **PR/Issue Integration**: Works seamlessly with GitHub comments and PR reviews
 - 🛠️ **Flexible Tool Access**: Access to GitHub APIs and file operations (additional tools can be enabled via configuration)
 - 📋 **Progress Tracking**: Visual progress indicators with checkboxes that dynamically update as Claude completes tasks
 - 🏃 **Runs on Your Infrastructure**: The action executes entirely on your own GitHub runner (Anthropic API calls go to your chosen provider)
+- ⚙️ **Simplified Configuration**: Unified `prompt` and `claude_args` inputs provide clean, powerful configuration aligned with Claude Code SDK
 
-## ⚠️ **BREAKING CHANGES COMING IN v1.0** ⚠️
+## 📦 Upgrading from v0.x?
 
-**We're planning a major update that will significantly change how this action works.** The new version will:
-
-- ✨ Automatically select the appropriate mode (no more `mode` input)
-- 🔧 Simplify configuration with unified `prompt` and `claude_args`
-- 🚀 Align more closely with the Claude Code SDK capabilities
-- 💥 Remove multiple inputs like `direct_prompt`, `custom_instructions`, and others
-
-**[→ Read the full v1.0 roadmap and provide feedback](https://github.com/anthropics/claude-code-action/discussions/428)**
-
----
+**See our [Migration Guide](./docs/migration-guide.md)** for step-by-step instructions on updating your workflows to v1.0. The new version simplifies configuration while maintaining compatibility with most existing setups.
 
 ## Quickstart
 
@@ -40,6 +33,7 @@ This command will guide you through setting up the GitHub app and required secre
 
 ## Documentation
 
+- **[Migration Guide](./docs/migration-guide.md)** - **⭐ Upgrading from v0.x to v1.0**
 - [Setup Guide](./docs/setup.md) - Manual setup, custom GitHub apps, and security best practices
 - [Usage Guide](./docs/usage.md) - Basic usage, workflow configuration, and input parameters
 - [Custom Automations](./docs/custom-automations.md) - Examples of automated workflows and custom prompts

action.yml

@@ -1,5 +1,5 @@
-name: "Claude Code Action Official"
-description: "General-purpose Claude agent for GitHub PRs and issues. Can answer questions and implement code changes."
+name: "Claude Code Action v1.0"
+description: "Flexible GitHub automation platform with Claude. Auto-detects mode based on event type: PR reviews, @claude mentions, or custom automation."
 branding:
   icon: "at-sign"
   color: "orange"
@@ -28,50 +28,9 @@ inputs:
     required: false
     default: ""
 
-  # Mode configuration
-  mode:
-    description: "Execution mode for the action. Valid modes: 'tag' (default - triggered by mentions/assignments), 'agent' (for automation with no trigger checking), 'experimental-review' (experimental mode for code reviews with inline comments and suggestions)"
-    required: false
-    default: "tag"
-
   # Claude Code configuration
-  model:
-    description: "Model to use (provider-specific format required for Bedrock/Vertex)"
-    required: false
-  anthropic_model:
-    description: "DEPRECATED: Use 'model' instead. Model to use (provider-specific format required for Bedrock/Vertex)"
-    required: false
-  fallback_model:
-    description: "Enable automatic fallback to specified model when primary model is unavailable"
-    required: false
-  allowed_tools:
-    description: "Additional tools for Claude to use (the base GitHub tools will always be included)"
-    required: false
-    default: ""
-  disallowed_tools:
-    description: "Tools that Claude should never use"
-    required: false
-    default: ""
-  custom_instructions:
-    description: "Additional custom instructions to include in the prompt for Claude"
-    required: false
-    default: ""
-  direct_prompt:
-    description: "Direct instruction for Claude (bypasses normal trigger detection)"
-    required: false
-    default: ""
-  override_prompt:
-    description: "Complete replacement of Claude's prompt with custom template (supports variable substitution)"
-    required: false
-    default: ""
-  mcp_config:
-    description: "Additional MCP configuration (JSON string) that merges with the built-in GitHub MCP servers"
-  additional_permissions:
-    description: "Additional permissions to enable. Currently supports 'actions: read' for viewing workflow results"
-    required: false
-    default: ""
-  claude_env:
-    description: "Custom environment variables to pass to Claude Code execution (YAML format)"
+  prompt:
+    description: "Instructions for Claude. Can be a direct prompt or custom template."
     required: false
     default: ""
   settings:
@@ -98,14 +57,18 @@ inputs:
     required: false
     default: "false"
 
-  max_turns:
-    description: "Maximum number of conversation turns"
+  claude_args:
+    description: "Additional arguments to pass directly to Claude CLI"
+    required: false
+    default: ""
+  mcp_config:
+    description: "Additional MCP configuration (JSON string) that merges with built-in GitHub MCP servers"
     required: false
     default: ""
-  timeout_minutes:
-    description: "Timeout in minutes for execution"
+  additional_permissions:
+    description: "Additional GitHub permissions to request (e.g., 'actions: read')"
     required: false
-    default: "30"
+    default: ""
   use_sticky_comment:
     description: "Use just one comment to deliver issue/PR comments"
     required: false
@@ -134,6 +97,9 @@ outputs:
   branch_name:
     description: "The branch created by Claude Code for this execution"
     value: ${{ steps.prepare.outputs.CLAUDE_BRANCH }}
+  github_token:
+    description: "The GitHub token used by the action (Claude App token if available)"
+    value: ${{ steps.prepare.outputs.github_token }}
 
 runs:
   using: "composite"
@@ -166,24 +132,21 @@ runs:
         bun run ${GITHUB_ACTION_PATH}/src/entrypoints/prepare.ts
       env:
         MODE: ${{ inputs.mode }}
+        PROMPT: ${{ inputs.prompt }}
         TRIGGER_PHRASE: ${{ inputs.trigger_phrase }}
         ASSIGNEE_TRIGGER: ${{ inputs.assignee_trigger }}
         LABEL_TRIGGER: ${{ inputs.label_trigger }}
         BASE_BRANCH: ${{ inputs.base_branch }}
         BRANCH_PREFIX: ${{ inputs.branch_prefix }}
-        ALLOWED_TOOLS: ${{ inputs.allowed_tools }}
-        DISALLOWED_TOOLS: ${{ inputs.disallowed_tools }}
-        CUSTOM_INSTRUCTIONS: ${{ inputs.custom_instructions }}
-        DIRECT_PROMPT: ${{ inputs.direct_prompt }}
-        OVERRIDE_PROMPT: ${{ inputs.override_prompt }}
-        MCP_CONFIG: ${{ inputs.mcp_config }}
         OVERRIDE_GITHUB_TOKEN: ${{ inputs.github_token }}
         ALLOWED_BOTS: ${{ inputs.allowed_bots }}
         GITHUB_RUN_ID: ${{ github.run_id }}
         USE_STICKY_COMMENT: ${{ inputs.use_sticky_comment }}
         DEFAULT_WORKFLOW_TOKEN: ${{ github.token }}
-        ADDITIONAL_PERMISSIONS: ${{ inputs.additional_permissions }}
         USE_COMMIT_SIGNING: ${{ inputs.use_commit_signing }}
+        ADDITIONAL_PERMISSIONS: ${{ inputs.additional_permissions }}
+        CLAUDE_ARGS: ${{ inputs.claude_args }}
+        MCP_CONFIG: ${{ inputs.mcp_config }}
         ALL_INPUTS: ${{ toJson(inputs) }}
 
     - name: Install Base Action Dependencies
@@ -229,23 +192,14 @@ runs:
         # Base-action inputs
         CLAUDE_CODE_ACTION: "1"
         INPUT_PROMPT_FILE: ${{ runner.temp }}/claude-prompts/claude-prompt.txt
-        INPUT_ALLOWED_TOOLS: ${{ env.ALLOWED_TOOLS }}
-        INPUT_DISALLOWED_TOOLS: ${{ env.DISALLOWED_TOOLS }}
-        INPUT_MAX_TURNS: ${{ inputs.max_turns }}
-        INPUT_MCP_CONFIG: ${{ steps.prepare.outputs.mcp_config }}
         INPUT_SETTINGS: ${{ inputs.settings }}
-        INPUT_SYSTEM_PROMPT: ""
-        INPUT_APPEND_SYSTEM_PROMPT: ${{ env.APPEND_SYSTEM_PROMPT }}
-        INPUT_TIMEOUT_MINUTES: ${{ inputs.timeout_minutes }}
-        INPUT_CLAUDE_ENV: ${{ inputs.claude_env }}
-        INPUT_FALLBACK_MODEL: ${{ inputs.fallback_model }}
+        INPUT_CLAUDE_ARGS: ${{ steps.prepare.outputs.claude_args }}
         INPUT_EXPERIMENTAL_SLASH_COMMANDS_DIR: ${{ github.action_path }}/slash-commands
         INPUT_ACTION_INPUTS_PRESENT: ${{ steps.prepare.outputs.action_inputs_present }}
         INPUT_PATH_TO_CLAUDE_CODE_EXECUTABLE: ${{ inputs.path_to_claude_code_executable }}
         INPUT_PATH_TO_BUN_EXECUTABLE: ${{ inputs.path_to_bun_executable }}
 
         # Model configuration
-        ANTHROPIC_MODEL: ${{ inputs.model || inputs.anthropic_model }}
         GITHUB_TOKEN: ${{ steps.prepare.outputs.GITHUB_TOKEN }}
         NODE_VERSION: ${{ env.NODE_VERSION }}
         DETAILED_PERMISSION_MESSAGES: "1"

base-action/README.md

@@ -100,7 +100,6 @@ Add the following to your workflow file:
 | `model`                   | Model to use (provider-specific format required for Bedrock/Vertex)                               | No       | 'claude-4-0-sonnet-20250219' |
 | `anthropic_model`         | DEPRECATED: Use 'model' instead                                                                   | No       | 'claude-4-0-sonnet-20250219' |
 | `fallback_model`          | Enable automatic fallback to specified model when default model is overloaded                     | No       | ''                           |
-| `timeout_minutes`         | Timeout in minutes for Claude Code execution                                                      | No       | '10'                         |
 | `anthropic_api_key`       | Anthropic API key (required for direct Anthropic API)                                             | No       | ''                           |
 | `claude_code_oauth_token` | Claude Code OAuth token (alternative to anthropic_api_key)                                        | No       | ''                           |
 | `use_bedrock`             | Use Amazon Bedrock with OIDC authentication instead of direct Anthropic API                       | No       | 'false'                      |
@@ -320,7 +319,6 @@ You can combine MCP config with other inputs like allowed tools:
     prompt: "Access the custom MCP server and use its tools"
     mcp_config: "mcp-config.json"
     allowed_tools: "Bash(git:*),View,mcp__server-name__custom_tool"
-    timeout_minutes: "15"
     anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
 ```