MCP-TY

Instructions

Implementation Reference

• src/mcp_ty/server.py:250-283 (handler)

  The `read_code` tool handler function implementation, which reads a file and optionally returns a range of lines.

  async def read_code(
      file_path: str,
      start_line: int | None = None,
      end_line: int | None = None
  ) -> str:
      """Read file content, optionally by line range (1-based)."""
      path = Path(file_path).resolve()
      if not path.exists():
          return _error(f"File not found: {file_path}")
  
      try:
          content = path.read_text(encoding="utf-8")
          lines = content.splitlines()
          total_lines = len(lines)
  
          start = (start_line or 1) - 1
          end = end_line or total_lines
  
          if start < 0:
              start = 0
          if end > total_lines:
              end = total_lines
          if start >= total_lines:
              return _error(f"start_line {start_line} exceeds file length {total_lines}")
  
          selected = {i + 1: lines[i] for i in range(start, end)}
  
          return _ok({
              "file": path.name,
              "path": str(path),
              "range": {"start": start + 1, "end": end},
              "total_lines": total_lines,
              "lines": selected
          })