fetch_file
ChatGPTDownloads and returns file content from a submission attachment. Supports multiple file types: - Images (PNG, JPG, GIF, WebP, SVG): Returns base64-encoded image data that vision-capable AI models can analyze directly. - PDFs: Extracts text content for analysis. Use extract_text=true for readable text, or extract_text=false for base64. - Text files (TXT, MD, CSV, JSON, XML, HTML): Returns the text content directly. - Other files: Returns base64-encoded content with mime type for specialized processing. Call this AFTER read_submission to get file content. First call read_submission with include_files=true to get attachment IDs.
