save-systems SKILL.md skillA

save-systems from ukanwat/overtime is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add ukanwat/overtime/save-systems@git:20260812.5b73825

Pins git:20260812.5b73825 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: ukanwat/overtime
Path: .claude/skills/save-systems/SKILL.md
Versions recorded: 1
Latest version: git:20260812.5b73825, committed Aug 12, 2026
Size: 7,598 bytes
Repository stars: 399
License: MIT

Design save/load for game state — choosing what to serialize, file formats, save slots, atomic crash-safe writes, schema versioning and migration, and autosave. Engine-neutral. Use when the user mentions save system, save/load, game state persistence, save slots, autosave, save file corruption, or migrating old saves to a new version.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Save systems

A save file is a **serialized snapshot of game state** that survives restarts.
The hard parts aren't writing bytes — they're choosing *what* to save, writing it
so a crash mid-save can't corrupt it, and reading *old* saves after you ship a
patch. Get those three right and the rest is plumbing.

## When to use

- Use to persist progress: player stats, inventory, world flags, settings,
  positions — across sessions and game updates.
- Use to design save slots, quicksave/autosave, and crash-safe writes.
- Use when old save files break after a content/code change (versioning &
  migration).

**When *not* to use:** for Roblox cloud persistence specifics, use
`roblox-datastores`. For the data model the save serializes (resources/SOs), use
`godot-resources` / `unity-scriptableobjects`. For Godot's `FileAccess`/
`ResourceSaver` and `user://` paths, defer to the Godot engine skill while
applying the patterns here.

## Core workflow

1. **Decide what state is authoritative.** Save the *data* (hp, position, seed,
   unlocked flags), not engine objects or scene nodes. You will reconstruct
   objects from data on load — never serialize live node references.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add ukanwat/overtime/save-systems@sha256:20dba7985d2fc5a2

The line at the top of this page pins the label git:20260812.5b73825, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_s7jcu2og7el4k2l6.svg)](https://markdownregistry.com/a/art_s7jcu2og7el4k2l6)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Aug 12, 2026.

version	committed	commit	size	audit
git:20260812.5b73825 latest	2026-08-12	5b73825	7,598 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (7598 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

ukanwat/overtime · 399 stars · license MIT · pushed 2026-10-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_s7jcu2og7el4k2l6
GET https://markdownregistry.com/api/v1/resolve?ref=ukanwat/overtime/save-systems
GET https://markdownregistry.com/api/v1/blob/20dba7985d2fc5a2ca73bf212a8b7410ecc2d8bc1670551719541228bfe35485

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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