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
# Summer — Claude context
This file primes Claude Code on Summer when it loads from this repo. It lives in `.claude/` because a `CLAUDE.md` at the plugin root fails `claude plugin validate --strict`. The full agent guide (trust, the six library kinds, registry navigation, engine rules, verification ladder) is `AGENTS.md`; the session workflow skill is `using-summer` — activate it on every fresh session.
@../AGENTS.md
@../library/skills/using-summer/SKILL.md
The line at the top of this page pins the label git:20261015.909dda8, 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.
A 14 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
pass: Size between 200 bytes and 200 KB (469 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
summerengine/summer · 90 stars · license MIT · pushed 2026-10-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_de4idsf76tcb3qh3
GET https://markdownregistry.com/api/v1/resolve?ref=summerengine/summer/.claude/CLAUDE.md
GET https://markdownregistry.com/api/v1/blob/8ffb2531c910b493e1f79448ed8941833c1c809a8335a54c8ede14599cbbf681
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.
summerengine/summer · library/skills/3d-lighting/SKILL.md · Set up 3D scene lighting — DirectionalLight3D vs Omni vs Spot, WorldEnvironment, sky, shadow tuning, ambient — per…
summerengine/summer · library/skills/adaptive-music/SKILL.md · Wire music stems to game state — combat/explore/boss/tension crossfades on a shared bus, paired with a state machine…
summerengine/summer · library/skills/agent-playtesting/SKILL.md · Playtest by driving the LIVE game — deterministic launch, frame-stamped probes before/after each action, exact frame…
summerengine/summer · library/skills/ai-characters-in-games/SKILL.md · Safe AI characters in published games: no keys in the build, replies via Summer's player AI gateway, moderation, spend…
summerengine/summer · library/skills/ambient-bed/SKILL.md · Generate a long looping location ambience — forest, dungeon, city, spaceship, cave — a looping AudioStreamPlayer on the…
summerengine/summer · library/skills/animated-loop/SKILL.md · Generate a short seamlessly-looping video clip — splash background, animated logo backdrop, idle title-screen footage —…
summerengine/summer · library/skills/animation-tree/SKILL.md · Design and wire AnimationTree state machines and blend trees so clips respond to gameplay — locomotion blends, attack…
summerengine/summer · library/skills/asset-strategy/SKILL.md · Route any 'I need a [thing]' asset request to the right specialist skill — disambiguates 2D / 3D / audio / video / VFX…
summerengine/summer · library/skills/audio-direction/SKILL.md · Define the game's sonic identity — music style, instruments, SFX vocabulary, dynamic music plan — output as an audio…
