MCP App StoreMCP App Storersbkb (Rust BlackBag) provides a single binary with many small applets for rapid binary data transformation and analysis. It includes encoders/decoders (hex, base64, url), checksum and CRC tools, slicing and searching (slice, bgrep), entropy analysis, XOR utilities, timestamp decoders, and lightweight compression helpers (deflate/inflate). The design mirrors BusyBox/CyberChef-style chaining so you can pipe tools together for complex data-processing tasks.
Use rsbkb when you need quick, scriptable command-line operations on raw data: reversing obfuscated strings, extracting parts of firmware or binaries, calculating offsets for exploit development, scanning files for byte patterns during forensics, or solving CTF data challenges. It’s built for developers, security researchers, and CTF players who prefer fast, composable CLI tools.
rsbkb help <applet> (no heavy install required).Likely compatible with agents that can run shell/CLI tools and parse stdout (Copilot/Codex-like shells, CI/automation agents).
rsbkb is a Rust-based CLI toolbox (like busybox) providing ~25 applets for binary data manipulation — encoding/decoding, checksums, XOR, entropy, binary grep, and more. The SKILL.md is well-structured with clear tables categorising applets by input model (stdin, file, value-argument). No scripts were bundled, so only static analysis was performed. The skill references an external binary tool that must be installed separately, with no install guidance.
Clean skill — no security concerns. SKILL.md is informative and well-organized with clear input model categorisation. Architecture is decent but simple (no scripts/ or references/ directories, no output contracts). Usefulness is moderate: valuable for CTF/reverse-engineering niche but not broadly applicable. Deducted usefulness because it's essentially documentation for an external binary rather than an actionable agent workflow.
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