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system-prompts/tool-description-readfile.md

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+<!--
+name: 'Tool Description: ReadFile'
+description: Tool description for reading files
+ccVersion: 2.0.14
+variables:
+  - DEFAULT_READ_LINES
+  - MAX_LINE_LENGTH
+  - CAN_READ_PDF_FILES
+  - BASH_TOOL_NAME
+-->
+Reads a file from the local filesystem. You can access any file directly by using this tool.
+Assume this tool is able to read all files on the machine. If the User provides a path to a file assume that path is valid. It is okay to read a file that does not exist; an error will be returned.
+
+Usage:
+- The file_path parameter must be an absolute path, not a relative path
+- By default, it reads up to ${DEFAULT_READ_LINES} lines starting from the beginning of the file
+- You can optionally specify a line offset and limit (especially handy for long files), but it's recommended to read the whole file by not providing these parameters
+- Any lines longer than ${MAX_LINE_LENGTH} characters will be truncated
+- Results are returned using cat -n format, with line numbers starting at 1
+- This tool allows Claude Code to read images (eg PNG, JPG, etc). When reading an image file the contents are presented visually as Claude Code is a multimodal LLM.${CAN_READ_PDF_FILES()?`
+- This tool can read PDF files (.pdf). PDFs are processed page by page, extracting both text and visual content for analysis.`:""}
+- This tool can read Jupyter notebooks (.ipynb files) and returns all cells with their outputs, combining code, text, and visualizations.
+- This tool can only read files, not directories. To read a directory, use an ls command via the ${BASH_TOOL_NAME} tool.
+- You can call multiple tools in a single response. It is always better to speculatively read multiple potentially useful files in parallel.
+- You will regularly be asked to read screenshots. If the user provides a path to a screenshot, ALWAYS use this tool to view the file at the path. This tool will work with all temporary file paths.
+- If you read a file that exists but has empty contents you will receive a system reminder warning in place of file contents.