Base64 Tool

Encode and decode base64 data. Support for standard and URL-safe variants.

Security Scan

The skill is internally consistent: it provides a simple base64 encode/decode CLI, asks for no secrets, has no install steps, and the included script matches the description.

Purpose & Capability

Name/description match the code and SKILL.md: the script implements encoding/decoding, URL-safe mode, file and stdin handling and wrapping. No unrelated capabilities or credentials are requested.

Instruction Scope

SKILL.md only documents CLI usage and examples. It does not instruct the agent to read unrelated files, environment variables, or to transmit data to external endpoints. All file reads/writes are explicit user-provided input/output paths.

Install Mechanism

No install spec is provided (instruction-only). A Python script is included but nothing is downloaded or installed automatically. No archive URLs or external package installs are present.

Credentials

The skill requires no environment variables or credentials and the code does not access any secrets or external service configuration.

Persistence & Privilege

always is false and the skill does not request persistent system privileges or modify other skills or system-wide settings. Autonomous invocation remains platform-default but is not combined with other risks here.

Assessment

This skill appears coherent and simple. Before installing or running, review the included script (scripts/b64.py) from the source you trust. Note that decoding can produce arbitrary binary files if you write output to disk—avoid writing decoded data from untrusted input to sensitive locations. Because there is no install step, using the script typically requires running it explicitly; it does not exfiltrate data or access secrets according to the provided files.

Base64 Tool - Encoding

Encode binary data to base64 and decode base64 back to original.

Quick Start

echo 'Hello' | base64-tool --encode

Features

• Encode to base64
• Decode from base64
• URL-safe variant
• File and stdin input

Examples

echo 'Hello' | base64-tool --encode
echo 'SGVsbG8=' | base64-tool --decode

See Also

• Related documentation: man base64 (if available)