Morph Fast Apply Fast, AI powered file editing using the Morph Apply API. Edit files without reading them first. Processes at 10,500 tokens/sec with 98% accuracy. When to Use Fast file edits without reading entire file first Batch edits to a file (multiple changes in one operation) When you know what to change but file is large Large files where reading would consume too many tokens Key Pattern: Code Markers Use // ... existing code ... (or language appropriate comments) to mark where edits go: The API intelligently places your edit in the right location. Usage Add error handling Add logging TypeScript example Parameters Parameter Description file File path to edit (required) instruction Human description of the change (required) code edit Code snippet with markers showing where to place edit (required) vs Claude's Edit Tool Tool Best For morph apply Fast edits, don't need to read file first, large files, batch edits Claude Edit Small precise edits when file is already in context Use morph apply when: File is not in context and reading it would be expensive File is very large ( 500 lines) Making multiple related edits at once You know the context of the change (function name, class, etc.) Use Claude Edit when: File is already in context from prior Read Very precise edits requiring exact old/new string matching Small files (<200 lines) MCP Server Required Requires morph server in mcp config.json with MORPH API KEY . Performance Speed : 10,500 tokens/sec Accuracy : 98% correct placement Token savings : Don't need to read entire file first

morph-apply