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Agent skill

Implement Prx Function

by yuriolive in yuriolive/PortPS5

Implement or fix a PS5 system-library (prx) function in PortPS5 (NID export, System V ABI, return codes, test).

GPL-2.0Auto-check passedProduct & Project Management

Install Implement Prx Function

skills CLI
$ npx skills add yuriolive/PortPS5 --skill implement-prx-function -a claude-code

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

GitHub CLI
$ gh skill install yuriolive/PortPS5 implement-prx-function --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/yuriolive/PortPS5.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/implement-prx-function .claude/skills/implement-prx-function && 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
implement-prx-function
GitHub stars
123
Token cost
~361 tokens
SKILL.md length
163 words
Files
1
Skills in repo
6
Repo updated
First seen
Licence
GPL-2.0

At a glance

Implement or fix a PS5 system-library (prx) function in PortPS5 (NID export, System V ABI, return codes, test).

  • Works in 7 steps: Locate the library under… → Establish the behaviour only from… → Signature → …
  • A title calls an unimplemented
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Wrong libkernel/libSce function

What it does

Implement Prx Function is an agent skill from yuriolive/PortPS5. Implement or fix a PS5 system-library (prx) function in PortPS5 (NID export, System V ABI, return codes, test). Use when a title calls an unimplemented or wrong libkernel/libSce function.

Its SKILL.md is about 360 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Product & Project Management. The repository describes itself as: Converts decrypted PS5 game dumps into native Windows executables via binary relinking, replacement system libraries, and Vulkan. No CPU emulation. The licence is GPL-2.0.

When your agent uses it

  • A title calls an unimplemented
  • Wrong libkernel/libSce function

Example prompts

  • “/implement-prx-function”

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

  1. Locate the library under core/libs/prx//. Find how neighbouring exports are declared (the export macros and APS5_VABI) and copy that…
  2. Establish the behaviour only from allowed sources (.agents/rules/legal-boundary.md)
  3. Signature
  4. Errors
  5. Title-agnostic: no title-specific branches (.agents/rules/no-title-hacks.md).
  6. Test: add a unit test for the success path and each error code, wired into ctest.
  7. Spec: if the function changes subsystem behaviour, update the relevant docs/spec/*.md with the update-spec skill.

What it can do on your machine

Read from SKILL.md and the folder at commit aa7d6da. 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

    No URLs in SKILL.md.

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

  • Credentials

    Names no API keys, tokens, secrets or passwords.

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

Context cost

Implement Prx Function loads about 361 tokens when it runs. Until then it costs about 53 tokens; SKILL.md has 163 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~53
When it runs · the whole SKILL.md, loaded when a task matches
~361

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 yuriolive/PortPS5 at commit aa7d6da, republished under its GPL-2.0 licence (© yuriolive). 163 words, ~361 tokens.

Download SKILL.mdSave it as .claude/skills/implement-prx-function/SKILL.md (or your agent's skills folder).
name
implement-prx-function
description
Implement or fix a PS5 system-library (prx) function in PortPS5 (NID export, System V ABI, return codes, test). Use when a title calls an unimplemented or wrong libkernel/libSce* function.

Implement a prx function

  1. Locate the library under core/libs/prx/<lib>/. Find how neighbouring exports are declared (the export macros and APS5_VABI) and copy that pattern exactly.

  2. Establish the behaviour only from allowed sources (.agents/rules/legal-boundary.md):

    • the function's observed use in the user's own dump;
    • open-source implementations (AnyPS5, shadPS4, FreeBSD for POSIX).

    Never use Sony SDK material.

  3. Signature:

    • Explicit-width types, with static_assert on the size and offsets of any struct the guest can see.
    • Every host entry point reachable from the guest is APS5_VABI.

  4. Errors:

    • Return the SCE/POSIX error code a console would return.
    • A genuinely unsupported argument or state goes through the logging abort path, not a silent stub.
    • If a stub is unavoidable, log it once and list it in docs/TechnicalDebt.md.

  5. Title-agnostic: no title-specific branches (.agents/rules/no-title-hacks.md).

  6. Test: add a unit test for the success path and each error code, wired into ctest.

  7. Spec: if the function changes subsystem behaviour, update the relevant docs/spec/*.md with the update-spec skill.

© yuriolive, GPL-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/implement-prx-function of yuriolive/PortPS5.

Open the folder on GitHubat commit aa7d6da

Compare with similar skills

Implement Prx Function 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.

Implement Prx Function compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Implement Prx Function this skillyuriolive/PortPS5123—~361Automated safety check: PassGPL-2.0
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Game Changing FeaturesopenstatusHQ/data-table-filters2.3k3 repos~2.1kAutomated safety check: PassMIT
CCPM Project Managementautomazeio/ccpm8.4k—~1.1kAutomated safety check: PassMIT
Convex Create Componentspokvulcan/poker-planning1148 repos~2.6kAutomated safety check: PassMIT
Self Improving Agentfarm-fe/farm5.6k2 repos~3.3kAutomated safety check: NotesMIT

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  • Compat Result

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Categories

Questions about Implement Prx Function

What does Implement Prx Function do?

Implement or fix a PS5 system-library (prx) function in PortPS5 (NID export, System V ABI, return codes, test). Implement Prx Function is an agent skill from yuriolive/PortPS5. Implement or fix a PS5 system-library (prx) function in PortPS5 (NID export, System V ABI, return codes, test).

When should I use Implement Prx Function?

Implement Prx Function fits situations like: A title calls an unimplemented; wrong libkernel/libSce function.

How do I install Implement Prx Function in Claude Code?

Run `npx skills add yuriolive/PortPS5 --skill implement-prx-function -a claude-code`. Or copy the skill folder (.agents/skills/implement-prx-function in yuriolive/PortPS5) into .claude/skills/implement-prx-function in your project. Claude Code loads it when a task matches its description.

How do I install Implement Prx Function in Codex?

Run `npx skills add yuriolive/PortPS5 --skill implement-prx-function -a codex`. Or copy the skill folder (.agents/skills/implement-prx-function in yuriolive/PortPS5) into .agents/skills/implement-prx-function in your project. Codex loads it when a task matches its description.

Can I use Implement Prx Function 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 yuriolive/PortPS5 --skill implement-prx-function -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/implement-prx-function, .gemini/skills/implement-prx-function, .github/skills/implement-prx-function and .opencode/skills/implement-prx-function in your project.

What does Implement Prx Function need to run?

SKILL.md names no scripts, command-line tools or credentials: Implement Prx Function is instructions for the agent only.

Does Implement Prx Function access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Implement Prx Function 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 Implement Prx Function use?

Implement Prx Function is published under the GPL-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Implement Prx Function use?

About 361 tokens (SKILL.md is roughly 1.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Implement Prx Function?

Skills that share tags, products or a category with Implement Prx Function: User Story Writer (deanpeters/Product-Manager-Skills, 7.2k stars), Game Changing Features (openstatusHQ/data-table-filters, 2.3k stars), CCPM Project Management (automazeio/ccpm, 8.4k stars) and Convex Create Component (spokvulcan/poker-planning, 114 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Implement Prx Function?

yuriolive (a GitHub user) maintains it in yuriolive/PortPS5, which has 123 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on October 1, 2026.

Source: yuriolive/PortPS5 on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.