agent-playtesting SKILL.md skillA
agent-playtesting 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/agent-playtesting@git:20260911.b4df358Pins git:20260911.b4df358 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/agent-playtesting/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260911.b4df358, committed Sep 11, 2026
- First version recorded
- Sep 3, 2026
- Size
- 12,099 bytes
- Repository stars
- 86
- License
- MIT
Playtest by driving the LIVE game — deterministic launch, frame-stamped probes before/after each action, exact frame steps, scripted or recorded input.
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
# Agent Playtesting ## Overview `playtesting-a-feature` says a feature is not done until someone has played it. This skill is how *you* play it — not a hidden probe that dies when it finishes, but the live game, driven one action at a time, with a frame-stamped record of what each action did. The engine's runtime-control ops make the running game a thing you can see and touch: | Tool | Does | |---|---| | `summer_play` | Start the game. With `instance` + `mode:"offscreen"` a disposable parallel instance; with `seed` / `fixed_fps` (and `deterministic:true` offscreen) a reproducible one. | | `summer_game_probe` | State AND pixels of ONE frame, atomically: live tree, property reads, screenshot, all stamped with the same frame counters. The evidence tool. | | `summer_game_control` | `pause`, `resume`, `step` exactly N physics/process frames, `speed`, `instances`. | | `summer_game_input` | `script` timed synthetic input; `record_start` / `record_stop` real input into `res://.summer/replays/`; `replay` a recording (with `seed` on a deterministic instance). | | `summer_runtime_set` / `summer_runtime_call` | Set a property / call a method on a live node. Actions, not evidence. | …
Read the whole file at its exact version.
How to install
mdr add summerengine/summer/agent-playtesting@sha256:d2425ae0f029bf90The line at the top of this page pins the label git:20260911.b4df358, 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_izaaa57rt5bwwt3d)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Sep 3, 2026 and Sep 11, 2026, about one every 8 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260911.b4df358 latest | 2026-09-11 | b4df358 | 12,099 B | A | view · diff |
| git:20260903.b260732 | 2026-09-03 | b260732 | 12,344 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 (12099 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_izaaa57rt5bwwt3d GET https://markdownregistry.com/api/v1/resolve?ref=summerengine/summer/agent-playtesting GET https://markdownregistry.com/api/v1/blob/d2425ae0f029bf9021f5bdde9832d0eb4e6d1db9743420919738d5e6709744d9
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.