long-command-check SKILL.md skillA
long-command-check from minimax-ai/mcode-stack is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add minimax-ai/mcode-stack/long-command-check@git:20261028.c889a19Pins git:20261028.c889a19 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- minimax-ai/mcode-stack
- Path
stacks/ronny/skills/long-command-check/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261028.c889a19, committed Oct 28, 2026
- Size
- 3,926 bytes
- Repository stars
- 495
- License
- MIT
Audit how an agent harness runs long shell commands, covering foreground wait limits, moving to background without re-running, timeouts, completion notification, polling, output size, cleanup and behaviour after compaction. Use when building or reviewing an agent's shell or background-task tool, or when an agent hangs on dev servers, long builds or test runs.
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
# Long Command Check For people building agents. The question is simple: when the agent runs a shell command, should it wait for it to finish? Following that question leads to a chain of design decisions. Foreground is for fast commands, background is for long ones, and ideally the same process connects the two. Companion to MCode Engineering Notes 04, "How long should one bash command wait". Plain-text checklist: `checklists/long-command.md`. ## Why waiting is expensive Two costs while the agent blocks on a command: - The visible one: the user waits and nothing else happens. - The hidden one: the provider's **prompt cache can expire**. While a command runs in the foreground there are no new model requests. If the wait is longer than the cache lifetime of the model service you use, the next request re-processes the whole prefix: slower first token, higher cost. Look up the cache lifetime in your provider's documentation. Moving work to the background does not keep the cache warm forever. It saves the time the agent would otherwise spend idle when it had other work to do. ## How to run the audit …
Read the whole file at its exact version.
How to install
mdr add minimax-ai/mcode-stack/long-command-check@sha256:6d41771fcb62e660The line at the top of this page pins the label git:20261028.c889a19, 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_246bho55d3cpgjox)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 28, 2026.
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 (3926 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
minimax-ai/mcode-stack · 495 stars · license MIT · pushed 2026-10-29 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_246bho55d3cpgjox GET https://markdownregistry.com/api/v1/resolve?ref=minimax-ai/mcode-stack/long-command-check GET https://markdownregistry.com/api/v1/blob/6d41771fcb62e660350a448a63c241aef18fb23dbc1ab8625e17d51697c85a7e
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.