tune-performance SKILL.md skillA
tune-performance from summerengine/summer is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add summerengine/summer/tune-performance@git:20261016.e9d6e70Pins git:20261016.e9d6e70 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- summerengine/summer
- Path
library/skills/tune-performance/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261016.e9d6e70, committed Oct 16, 2026
- First version recorded
- Oct 10, 2026
- Size
- 15,242 bytes
- Repository stars
- 86
- License
- MIT
Profile a slow game, find rendering, physics or script hotspots, and propose fixes with expected gains.
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
# /tune-performance — Profile, Diagnose, Fix ## Overview Performance tuning without measurement is gambling. This skill enforces a measure-first loop: read diagnostics, identify the dominant cost (rendering / physics / scripting / startup), drill into the specific pattern, propose one fix, verify the metric moved. No shotgun optimization. **Core principle:** the engine's diagnostics tell you which subsystem is bleeding. Don't optimize a different subsystem. ## Steps ### 1. Get the user's symptom precisely > What's slow? Pick the closest: framerate drops in scene X / startup is long / freezes for a moment / runs fine on my machine but bad on hardware Y. Wait for the answer. It narrows where to look: | Symptom | Likely subsystem | |---|---| | Framerate drops as more enemies spawn | Scripting (`_process` per-instance) or physics | | Framerate is fine standing still, drops looking at level X | Rendering (overdraw, draw calls, lights) | | Stutter every N seconds | GC pause, autoload loop, or async load | | Long startup | Asset import, autoload `_ready` work, shader compilation | …
Read the whole file at its exact version.
How to install
mdr add summerengine/summer/tune-performance@sha256:17a838ea8424d73bThe line at the top of this page pins the label git:20261016.e9d6e70, 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.
[](https://markdownregistry.com/a/art_uqhq3mvm6npwmpee)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Oct 10, 2026 and Oct 16, 2026, about one every 2 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261016.e9d6e70 latest | 2026-10-16 | e9d6e70 | 15,242 B | A | view · diff |
| git:20261016.75c9db4 | 2026-10-16 | 75c9db4 | 15,146 B | A | view · diff |
| git:20261015.3be1d9d | 2026-10-15 | 3be1d9d | 13,794 B | A | view · diff |
| git:20261015.ee152ef | 2026-10-15 | ee152ef | 13,809 B | A | view · diff |
| git:20261010.4ade947 | 2026-10-10 | 4ade947 | 13,865 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (15242 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
summerengine/summer · 86 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_uqhq3mvm6npwmpee GET https://markdownregistry.com/api/v1/resolve?ref=summerengine/summer/tune-performance GET https://markdownregistry.com/api/v1/blob/17a838ea8424d73bd5c3dbf649e147ba6dfb05485b2974afe9932ad19f8383e0
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.