background

Anthropic released Claude 4 models with an updated text editor tool (text_editor_20250429) that uses a new naming convention and removes the undo_edit command functionality.

summary

• add text_editor_20250429 tool for Claude 4 Opus & Sonnet
• use str_replace_based_edit_tool name (vs str_replace_editor for older versions)
• remove undo_edit command support as per Claude 4 specifications
• use computer-use-2025-01-24 beta flag

verification

• tool properly integrated into anthropic provider
• correct beta flag and tool name mapping

tasks

• created text-editor_20250429.ts with correct tool schema
• updated anthropic-tools.ts exports and documentation
• added tool mapping in anthropic-prepare-tools.ts
• added tool type to anthropic-api-types.ts
• removed undo_edit command for Claude 4 compatibility

future work

• monitor for additional Claude 4 tool updates and capabilities

related issue #6471 #6752