What is mmorpg-packet-protocol-review?

A read-only comparison of the message definitions used between a C++ game server and a Unity client. It checks version numbers, numeric operation codes, field order, data types, message direction and matching replies.

Use it to review MMORPG network protocol manifests, investigate client/server version mismatches and check wire-format compatibility. It does not send packets or edit generated protocol files.

It finds cases where client and server releases no longer understand each other. This helps detect changed fields, duplicate codes, wrong directions and missing request-response pairs before runtime.

mmorpg-packet-protocol-review — Skill for Codex by hoatv2211

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add hoatv2211/GameStudio-CodexKIT --skill mmorpg-packet-protocol-review

Clone the repo

git clone --depth 1 https://github.com/hoatv2211/GameStudio-CodexKIT

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/hoatv2211/gamestudio-codexkit/mmorpg-packet-protocol-review/github.svg)](https://agentmods.dev/skills/hoatv2211/gamestudio-codexkit/mmorpg-packet-protocol-review)

Your own site

<a href="https://agentmods.dev/skills/hoatv2211/gamestudio-codexkit/mmorpg-packet-protocol-review"><img src="https://agentmods.dev/badge/skills/hoatv2211/gamestudio-codexkit/mmorpg-packet-protocol-review/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/hoatv2211/gamestudio-codexkit/mmorpg-packet-protocol-review"><img src="https://agentmods.dev/badge/skills/hoatv2211/gamestudio-codexkit/mmorpg-packet-protocol-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 723 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00044	$0.00723
Opus 5	$0.00022	$0.00362
Sonnet 5	$0.00009	$0.00145
Haiku 4.5	$0.00004	$0.00072

Measured 12d ago against content hash 43c2bbb042b4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

mmorpg-packet-protocol-review scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/lua_contract_audit.py, scripts/protocol_review.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/mmorpg-packet-protocol-review/SKILL.md · 79 lines

How it starts

The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MMORPG Packet Protocol Review

Overview

Compare versioned protocol manifests across clients and servers without sending traffic or editing generated packet definitions.

When to use

Use for opcode drift, packet-version mismatch, direction errors, typed field order changes, request-response mismatches, or mixed client/server releases.

When NOT to use

Do not use for exploit testing, live packet replay, generic Lua copy auditing, or runtime service control.

Required inputs and context discovery

Collect protocol versions, source and generated paths, packet names, opcodes, direction, authority, ordered typed fields, response pairing, build compatibility matrix, and no-touch generated outputs.

Safety and risk level

Read-only. Never send crafted packets, start servers, capture credentials, or hand-edit generated protocol outputs.

Workflow

Identify authoritative protocol sources and version ownership. Completion criterion: every manifest is source, generated, copy, or unknown.
Normalize packet definitions into deterministic ordered structures. Completion criterion: parse ambiguity is reported rather than guessed.
Compare versions, presence, opcode, direction, authority, fields, and pairing. Completion criterion: each mismatch cites both sides.
Map mismatches to supported client/server build combinations. Completion criterion: compatibility risk is explicit.
Propose source-first changes and regression fixtures. Completion criterion: no live traffic or generated hand edit is required.

Evidence and output contract

Produce packet-protocol-review.json with versions, compatibility, packet mismatches, source authority, limitations, and recommended source fixes.

Handoff contract

Record manifest/build paths, supported versions, mismatches, generated files, parsing limits, and next source-first owner.

Pitfalls and anti-rationalization

Matching packet names do not prove compatibility.
Field order is part of a binary contract.
Do not test static drift by sending packets to production.
Generated copies are not automatically authoritative.

Read the full file on GitHub · 79 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

12d ago First seen · 79 lines · 44 tokens per session scan A 43c2bbb042b4

Subscribe to this mod's changes

mmorpg-packet-protocol-review is a skill published in the GitHub repository hoatv2211/GameStudio-CodexKIT (3 stars, last pushed 4d ago), licensed MIT. It adds 44 tokens to every session and 723 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Code review Game development agent-skills agentic-ai agentic-workflow codex-cli codex-plugin codex-skill

code-standards

C# coding standards and code review. Use when the user mentions coding standards or conventions, writing code to spec, defining standards for a project, cohesion and coupling, design pattern selection, or naming conventions, or wants a code review on the design and standards dimension.

tianzhiying/Unity-perf · 58 tokens

mmorpg-packet-protocol-review