safe-file-reader

Validate and normalize user-supplied paths to prevent traversal during document reads.

3|1|Updated Feb 1, 2026
One-click install
npx skills add https://github.com/dgriffin831/clawhub-skills --skill safe-file-reader-dgriffin831
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: safe-file-reader
Source: https://github.com/dgriffin831/clawhub-skills/tree/main/skill-scan/test-fixtures/path-traversal-reader
Command: npx skills add https://github.com/dgriffin831/clawhub-skills --skill safe-file-reader-dgriffin831

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Prevents unsafe file access during document reads.

Core Features & Use Cases

  • Path traversal protection: Validates and normalizes input paths to prevent accessing unintended parts of the filesystem.
  • Restricted document access: Reads only from a designated documents directory, reducing exposure to sensitive paths.
  • Robust error handling: Returns clear, non- leaking errors when invalid paths are provided without exposing system details. Use Case: A local tool that loads user-provided document names from a UI, ensuring only files within /home/user/documents are opened and any traversal attempts are blocked.

Quick Start

Use the safe-file-reader to read a file from the documents directory, for example provide the filename 'sample.txt' to read.

Frequently Asked Questions about safe-file-reader

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I prevent path traversal when reading files from user-supplied paths in Python?

Path traversal protection validates and normalizes user-supplied paths before joining them to a restricted base directory, ensuring the final path remains within the allowed boundary. This blocks access to unintended filesystem areas.

How do I safely read local documents in Python without exposing sensitive system paths?

You can safely read local documents by restricting file access to a designated directory and implementing explicit error handling. This approach returns clear, non-leaking errors when invalid paths are provided without exposing system details.

What is the best way to handle invalid file paths during local document reads?

The best way to handle invalid file paths is through explicit error handling that catches invalid inputs early. By validating paths and returning clear, non-leaking errors, you prevent the application from exposing sensitive directory structures.

Does safe file reading work with any filesystem path supplied by a user?

Safe file reading does not work with arbitrary filesystem paths; it restricts access to a designated documents directory. This ensures only files within the specified boundary are opened and any traversal attempts are blocked.

Why should I use path validation for local file I/O scenarios?

You should use path validation for local file I/O scenarios to guard against path traversal attacks. Validating and normalizing input paths ensures that user-provided data cannot be used to access unintended or sensitive parts of the filesystem.

What are the limitations of restricting file reads to a documents directory?

Restricting file reads to a documents directory limits access to only files within that specific path, preventing reads from other valid filesystem locations. This reduces exposure to sensitive paths but requires all accessible files to be moved or copied into the directory.