Agent skill

Related Projects Index

by PSBrew in PSBrew/MkPFS

Compact index of upstream projects and reference sources relevant to PKG/PFS/exFAT research.

GPL-3.0Auto-check passedWriting & Content

Install Related Projects Index

skills CLI
$ npx skills add PSBrew/MkPFS --skill related-projects-index -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install PSBrew/MkPFS related-projects-index --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/PSBrew/MkPFS.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/related-projects-index .claude/skills/related-projects-index && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
related-projects-index
GitHub stars
180
Token cost
~2k tokens
SKILL.md length
805 words
Files
16 (incl. references)
Skills in repo
5
Repo updated
First seen
Licence
GPL-3.0

At a glance

Compact index of upstream projects and reference sources relevant to PKG/PFS/exFAT research.

  • You are performin a research related to MkPFS
  • SKILL.md covers How to use, ShadowMountPlus, PS5 Game Compressor and PKGTool, plus 13 more sections
  • Needs IMAGE_KEY
  • Tasks that involve Summarization

What it does

Related Projects Index is an agent skill from PSBrew/MkPFS. Compact index of upstream projects and reference sources relevant to PKG/PFS/exFAT research. Each entry gives an executive summary, upstream links, and a pointer to our internal reference file with deeper notes and citations. Always use this skill when you are performin a research related to MkPFS, PFS, compression, kraken, PKGs, etc.

Its SKILL.md is about 2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 16 other files, including reference files (for example `references/goodle.md`, `references/kstuff-lite.md` and `references/liborbispkg-wiki.md`).

It sits in Writing & Content, covering Summarization and Citation management. The repository describes itself as: Create and Manage Unsigned PFS (Playstation File System) image files with file compression and checksum support. The licence is GPL-3.0.

When your agent uses it

  • You are performin a research related to MkPFS
  • Tasks that involve Summarization
  • Tasks that involve Citation management

Example prompts

  • “/related-projects-index”

Requirements

  • A credential in IMAGE_KEY

What it can do on your machine

Read from SKILL.md and the folder at commit 1d5df56. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • github.com
    • psdevwiki.com
    • wololo.net

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • IMAGE_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Related Projects Index loads about 2k tokens when it runs, and up to ~33k if it reads all its reference files. Until then it costs about 90 tokens; SKILL.md has 805 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~90
When it runs · the whole SKILL.md, loaded when a task matches
~2k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~33k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from PSBrew/MkPFS at commit 1d5df56, republished under its GPL-3.0 licence (© PSBrew). 805 words, ~1,971 tokens.

Download SKILL.mdSave it as .claude/skills/related-projects-index/SKILL.md (or your agent's skills folder). This skill also uses 15 other files; get the full folder from GitHub.
name
related-projects-index
description
Compact index of upstream projects and reference sources relevant to PKG/PFS/exFAT research. Each entry gives an executive summary, upstream links, and a pointer to our internal reference file with deeper notes and citations. Always use this skill when you are performin a research related to MkPFS, PFS, compression, kraken, PKGs, etc.
context
fork

Use this skill whenever you need quick orientation on external projects (code, wikis, tools) that inform PKG/PFS/exFAT behavior or mounting/format details. For deeper research, open the linked internal reference file under references/ in this skill folder, or go upstream.

How to use

  • Start here to find the right project/source fast.
  • For details, open the linked references/<slug>.md file in this skill folder.
  • For implementation specifics, fetch or read from the upstream links.

ShadowMountPlus

  • What: Auto-detection and mounting tool for images; stages metadata and registers titles.
  • Relevance: Practical mount flows for UFS/PFS/exFAT, including LVD attach + PFS nmount flags.
  • Gotchas: For PFS, validates mounted block size vs chosen sector size; requires proper image root layout.
  • Upstream: https://github.com/drakmor/ShadowMountPlus
  • Internal: references/shadowmountplus.md

PS5 Game Compressor

  • What: Standalone PS5 payload + web UI to compress, validate/repair, uncompress, and move SMP-mounted games.
  • Relevance: Real-console PFSC builder with zlib windowed pipeline (64 KiB blocks) and .vhash per-block SHA‑256; validates MkPFS images under SMP with APR Emu support.
  • Gotchas: Requires ShadowMountPlus and kstuff-lite; default nested exFAT recommended; nested PFS is experimental; destructive mode is risky and constrained.
  • Upstream: https://github.com/juma-sayeh/PS5-Game-Compressor
  • Internal: references/ps5-game-compressor.md

PKGTool

  • What: Practical .pkg parser/extractor with a partial repack path.
  • Relevance: Field-tested read path; good for entry table shape and decompression logic.
  • Gotchas: Writer leaves CRC unimplemented; repack is basename-oriented by default.
  • Upstream: https://github.com/thesupersonic16/PKGTool
  • Internal: references/pkgtool.md

LibOrbisPkg

  • What: Full PKG/PFS toolkit (library + tools + tests).
  • Relevance: Canonical reference for PFS tree modeling, inode/dirent serialization, flat path table, signed outer image layout, and optional AES-XTS.
  • Gotchas: PFSC asymmetry; reader handles compressed/direct, writer emits header + full-block map for nested pfs_image.dat.
  • Upstream: https://github.com/maxton/LibOrbisPkg
  • Internal: references/liborbispkg.md

LibOrbisPkg Wiki

  • What: Orientation wiki for the LibOrbisPkg ecosystem (PkgEditor, PkgTool, library notes).
  • Relevance: Highest value page is the PKG crypto note (passcode-derived keys, EKPFS, PFS key derivation, ENTRY_KEYS/IMAGE_KEY roles).
  • Upstream (wiki git): https://github.com/maxton/LibOrbisPkg.wiki.git
  • Internal: references/liborbispkg-wiki.md

kstuff-lite

  • What: PS5 payload bundle with loader, kernel hooks, mount automation, and crypto helpers.
  • Relevance: Practical mount automation for UFS/PFS/exFAT; loader falls back to raw folder path when mount fails.
  • Gotchas: KSTUFF_OBS=1 enables observability/snapshots; crypto focuses on FPKG/FSELF/debug NPDRM.
  • Upstream: https://github.com/EchoStretch/kstuff-lite
  • Internal: references/kstuff-lite.md

PSDevWiki — PFS page

  • What: Community-maintained PFS structure page (headers, inode/dirent, flat_path_table; unsigned baseline spec).
  • Relevance: Field offsets and packing rules MkPFS must honor for mountability; clarifies mode bits (signed/64b/encrypted/case-insensitive) and block size ranges.
  • Upstream: https://www.psdevwiki.com/ps4/PFS
  • Internal: references/psdevwiki-pfs.md

PSDevWiki — PKG files page

  • What: Orientation + structure notes for PKG outer container and embedded PFS (header, entries, digests, PFS offsets/digests, delivery metadata).
  • Relevance: Exposes where/what to validate when a PKG wraps a PFS from MkPFS; captures EKPFS→XTS key derivation narrative for production images.
  • Upstream: https://www.psdevwiki.com/ps4/PKG_files
  • Internal: references/psdevwiki-pkg-files.md

ShadPKG — HOWWORKS

Wololo — flatz FPKG writeup

  • What: Authoritative deep-dive on FSELF/FPKG enablement (kernel hooks, toolchain key swap, ShellCore patches, kernel crypto shims).
  • Relevance: Defines EKPFS vs EEKPFS and PFS final key derivation; clarifies why unsigned/PFSC developer flows exist versus retail.
  • Upstream: https://wololo.net/ps4-fpkg-writeup-by-flatz/
  • Internal: references/wololo-fpkg-flatz.md
Show full SKILL.md (319 more words)Show less

goodle

  • What: Thin Go cgo wrapper for OodleLZ decompression; drop-in replacement for the gooz package.
  • Relevance: Validates Oodle per-block decompression paths used in adjacent tooling; cross-check outputs independent of Python.
  • Gotchas: Requires proprietary Oodle shared library (oo2core_N_win64.dll/liboo2core.so/.dylib).
  • Upstream: https://github.com/oriath-net/goodle
  • Internal: references/goodle.md

TLOU PSARC Tool

  • What: Windows GUI utility to read/extract and partially reimport Naughty Dog .psarc archives (big-endian headers, MD5 name table, per-block Oodle/zlib).
  • Relevance: Demonstrates block size tables, MD5-based name resolution, and Oodle/zlib per-block decompression used in adjacent game assets.
  • Gotchas: Windows-only, GUI-only; import path writes uncompressed, injects author signature, does not update the name table.
  • Upstream: https://github.com/amrshaheen61/TLOU_PSARC_Tool
  • Internal: references/tlou-psarc-tool.md

PKG Passcode Finder

  • What: VB.NET WPF app that randomly brute-forces 31-char alphanumeric passcodes for PS5 PKG extraction by invoking prospero-pub-cmd.exe.
  • Relevance: Confirms passcode length/charset and SDK-driven extraction flow; context for why open tooling matters.
  • Gotchas: Astronomical keyspace (62^31) makes naive random brute force impractical; Windows-only GUI; requires proprietary SDK tool.
  • Upstream: https://github.com/bobg-github/PS5PKGPasscodeFinder
  • Internal: references/pkg-passcode-finder.md

Oodle/Kraken Decompression Tools

  • What: Collection of open decoders and shims for Oodle codecs (Kraken/Mermaid/Selkie/Leviathan), including a Rust decompressor and Go Oodle wrapper.
  • Relevance: Enables verifying Oodle-compressed block behavior across ecosystems that feed into or out of PFS.
  • Gotchas: Official Oodle libraries are proprietary; prebuilt .so/.dll distribution may have licensing constraints.
  • Upstream: https://github.com/lvlvllvlvllvlvl/oozextract
  • Internal: references/oodle-kraken-tools.md

LibProsperoPkg

  • What: .NET 10 library for building & reading PS5 packages: inner/outer PFS, PFSC (Kraken/Zlib), AES-XTS encryption, RSA-3072 metadata signing, and debug/image finalization.
  • Relevance: Source of engineering details for EKPFS key schedule, inner-vs-outer PFS boundaries, Kraken PFSC implementation & heuristics, digest/icv computation, and packaging workflows that MkPFS should either match or reimplement.
  • Gotchas: GPL-3.0-or-later license; retail finalization and sealed rif key blobs are console-gated and not producible off-console. Use code as reference and prefer reimplementation for non-GPL integration.
  • Upstream: https://github.com/SvenGDK/LibProsperoPKG
  • Internal: references/libprospero-pkg.md

Notes

  • Internal reference files live under references/*.md in this skill and contain detailed notes and citations.
  • If an upstream link moves, update it here and in the corresponding internal reference.

© PSBrew, GPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 15 other files (references) in .claude/skills/related-projects-index of PSBrew/MkPFS.

  • SKILL.md
  • references/goodle.md
  • references/kstuff-lite.md
  • references/liborbispkg-wiki.md
  • references/liborbispkg.md
  • references/libprospero-pkg.md
  • references/oodle-kraken-tools.md
  • references/pkg-passcode-finder.md
  • references/pkgtool.md
  • references/ps5-game-compressor.md
  • references/psdevwiki-pfs.md
  • references/psdevwiki-pkg-files.md
  • references/shadowmountplus.md
  • references/shadpkg-howworks.md
  • references/tlou-psarc-tool.md
  • references/wololo-fpkg-flatz.md

Open the folder on GitHubat commit 1d5df56

Compare with similar skills

Related Projects Index next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Related Projects Index compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Related Projects Index this skillPSBrew/MkPFS180—~2kAutomated safety check: PassGPL-3.0
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Blog WriteAgriciDaniel/claude-blog2.3k1 repos~5.6kAutomated safety check: PassMIT
Blog BriefAgriciDaniel/claude-blog2.3k—~3.2kAutomated safety check: PassMIT
News Aggregator Skillcclank/news-aggregator-skill1.3k—~2.1kAutomated safety check: PassNone
AI Daily Newsgeekjourneyx/ai-daily-skill235—~2.3kAutomated safety check: PassNone

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Questions about Related Projects Index

What does Related Projects Index do?

Compact index of upstream projects and reference sources relevant to PKG/PFS/exFAT research. Related Projects Index is an agent skill from PSBrew/MkPFS. Compact index of upstream projects and reference sources relevant to PKG/PFS/exFAT research.

When should I use Related Projects Index?

Related Projects Index fits situations like: you are performin a research related to MkPFS; tasks that involve Summarization; tasks that involve Citation management.

How do I install Related Projects Index in Claude Code?

Run `npx skills add PSBrew/MkPFS --skill related-projects-index -a claude-code`. Or copy the skill folder (.claude/skills/related-projects-index in PSBrew/MkPFS) into .claude/skills/related-projects-index in your project. Claude Code loads it when a task matches its description.

How do I install Related Projects Index in Codex?

Run `npx skills add PSBrew/MkPFS --skill related-projects-index -a codex`. Or copy the skill folder (.claude/skills/related-projects-index in PSBrew/MkPFS) into .agents/skills/related-projects-index in your project. Codex loads it when a task matches its description.

Can I use Related Projects Index in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add PSBrew/MkPFS --skill related-projects-index -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/related-projects-index, .gemini/skills/related-projects-index, .github/skills/related-projects-index and .opencode/skills/related-projects-index in your project.

What does Related Projects Index need to run?

Going by SKILL.md and its folder, Related Projects Index needs credentials named IMAGE_KEY. Our summary lists: A credential in IMAGE_KEY.

Does Related Projects Index access the network?

SKILL.md names 3 domains. As links in the text: github.com, psdevwiki.com and wololo.net. This is read from the text; nothing was executed.

Is Related Projects Index safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Related Projects Index use?

Related Projects Index is published under the GPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Related Projects Index use?

About 2k tokens (SKILL.md is roughly 7.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 31k tokens, read only when the agent opens those files.

What are the alternatives to Related Projects Index?

Skills that share tags, products or a category with Related Projects Index: Spark Report (breakstageaxe61/genspark-claw, 159 stars), Blog Write (AgriciDaniel/claude-blog, 2.3k stars), Blog Brief (AgriciDaniel/claude-blog, 2.3k stars) and News Aggregator Skill (cclank/news-aggregator-skill, 1.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Related Projects Index?

PSBrew (a GitHub organization) maintains it in PSBrew/MkPFS, which has 180 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on October 3, 2026.

Source: PSBrew/MkPFS on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.