# Claude Code v0.2.80

> Claude Code v0.2.80, released 24 Apr 2025 (2025-04-24). 4 entries read out of the shipped bundle. Unofficial, and not affiliated with Anthropic.

Web version: https://changelogs.core-directive.com/v/0.2.80

## Changes

### New Features

OAuth Support for Claude.ai Pro/Team Users (`CLAUDE_MAX`)

- **New environment variable**: `CLAUDE_MAX` enables OAuth authentication for Claude.ai Pro/Team users
- When enabled, adds `user:inference` scope to OAuth permissions, allowing Claude Code to use your Claude.ai account for API access
- OAuth flow automatically handles token refresh when tokens are near expiration (within 5 minutes)
- Separate token storage for Claude.ai OAuth vs Console API keys

Deny Rules for Tool Permissions

- **New permission behavior**: In addition to "allow" rules, you can now create "deny" rules
- Navigate between Allow/Deny modes using Tab or arrow keys in the permission rules interface
- Denied tools will be automatically rejected without prompting
- Example: Add a deny rule for `Bash` to prevent any shell command execution

Managed Settings Support

- **Enterprise policy control**: System administrators can now configure tool permissions via managed settings
- Managed settings are loaded from system-level policy files:
- macOS: `/Library/Application Support/ClaudeCode/policies.json`
- Linux: `/etc/claude-code/policies.json`
- Managed permission rules cannot be modified or deleted by users
- Rules are displayed with a special indicator showing they're managed by your organization

Tool Renaming

- **dispatch_agent** renamed to **AgentTool** for better clarity
- **ReadNotebook** renamed to **NotebookReadTool** for consistency
- **LS** renamed to **LSTool** for consistency

### Improvements

Enhanced Security

- API key validation now ensures keys only contain alphanumeric characters, dashes, and underscores
- Improved error messages for invalid API key formats
- Better error handling for OAuth token refresh failures

Terminal Bell Control (macOS)

- Automatically attempts to disable the audio bell in Terminal.app profiles
- Reduces notification noise during command execution

At-Mention Content Display

- New visual formatting for at-mention content in conversations
- Better handling of user-provided file references

Performance Enhancements

- Prompt caching can now be disabled via `DISABLE_PROMPT_CACHING` environment variable
- Improved async handling for file operations and OAuth flows

### Usage Examples

Using OAuth with Claude.ai Account:
`# Enable Claude.ai OAuth authentication
export CLAUDE_MAX=1
claude

# The OAuth flow will include user:inference scope
# Your Claude.ai Pro/Team account will be used for API access`
Creating Deny Rules:
`# In the permission rules interface:
1. Press Tab to switch to "Deny" mode
2. Select "Add a new rule..."
3. Enter the tool pattern (e.g., "Bash", "Write*", etc.)
4. The tool will be automatically denied without prompting`
Managed Settings Example:
`// /Library/Application Support/ClaudeCode/policies.json
{
  "permissions": {
    "allow": ["Read*", "Grep", "LS"],
    "deny": ["Bash", "Write*", "Delete*"]
  }
}`

### Bug Fixes

- Fixed potential race conditions in OAuth callback handling
- Improved error messages for port conflicts during OAuth flow
- Better handling of manual OAuth code entry
- Fixed issues with permission rule deletion
- Enhanced validation for tool permission contexts