control-app SKILL.md skillA

control-app from sshadows/lethal is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add sshadows/lethal/control-app@git:20261021.f929b5a

Pins git:20261021.f929b5a in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
sshadows/lethal
Path
.claude/skills/control-app/SKILL.md
Versions recorded
5
Latest version
git:20261021.f929b5a, committed Oct 21, 2026
First version recorded
Oct 3, 2026
Size
12,239 bytes
Repository stars
10
License
MIT

Rebuild the LethAL Control BC extension and publish it to the target containers. Use after editing anything under extensions/lethal-control, after bumping its app.json version, or when a live gate refuses with "The deployed LethAL Control app reports version X, older than the Y this client requires". Compiles with alc, stages lethal-control.app, then publishes to every container the fixture configs name.

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

# Rebuild and publish LethAL Control

`extensions/lethal-control/lethal-control.app` is **gitignored** — a local build every machine makes
for itself, which no pull refreshes. Editing the AL does not rebuild it, and nothing republishes it
to a container automatically before the harness check runs. So the source, the local `.app`, and
what the container actually runs are three separate things that drift independently.

The symptom is always the same and always late:

```
backend not ready: The deployed LethAL Control app reports version 1.0.0.9, older than the
1.0.0.10 this client requires — your control app predates this client.
```

## Before building: the version rule

`MIN_CONTROL_VERSION` in `packages/runner/src/harness.ts` must **never be ahead of** `app.json`'s
`version`. A test pins that (R28): a minimum ahead of the app makes a freshly built app fail its own
gate. It may lag behind only for an action the client treats as optional (R389's `DependentCount`:
an older control app answers 404 and the client falls back). **Raise the minimum to app.json's
version whenever a client path requires the new action and has no fallback.**
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add sshadows/lethal/control-app@sha256:cbe8c2f94ad66790

The line at the top of this page pins the label git:20261021.f929b5a, 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 badge

[![mdr](https://markdownregistry.com/badge/art_tbpvrfw5uxzaccch.svg)](https://markdownregistry.com/a/art_tbpvrfw5uxzaccch)

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

Versions

The registry has recorded 5 versions of this file, between Oct 3, 2026 and Oct 21, 2026, about one every 5 days.

versioncommittedcommitsizeaudit
git:20261021.f929b5a latest2026-10-21 f929b5a 12,239 BA view · diff
git:20261021.69a7f002026-10-21 69a7f00 12,059 BA view · diff
git:20261005.a011eaf2026-10-05 a011eaf 11,968 BA view · diff
git:20261003.fa4847c2026-10-03 fa4847c 11,788 BA view · diff
git:20261003.c44169c2026-10-03 c44169c 11,725 BA 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 (12239 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

sshadows/lethal · 10 stars · license MIT · pushed 2026-11-07 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_tbpvrfw5uxzaccch
GET https://markdownregistry.com/api/v1/resolve?ref=sshadows/lethal/control-app
GET https://markdownregistry.com/api/v1/blob/cbe8c2f94ad66790ae7152e9fd6c358a3576abe9bb3129b641d94961f738ee1f

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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