principle-manage-idle-resumption SKILL.md skillA
principle-manage-idle-resumption from edbertchan/catstack is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add edbertchan/catstack/principle-manage-idle-resumption@git:20260825.847374dPins git:20260825.847374d in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- edbertchan/catstack
- Path
corpus/skills/principle-manage-idle-resumption/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260825.847374d, committed Aug 25, 2026
- Size
- 2,779 bytes
- Repository stars
- 6
- License
- none declared
Apply when a session may idle for a multi-hour or multi-day gap: polling loops, human-in-the-loop waits, overnight runs, babysit/watch/retry work. Compact or restart deliberately before resuming instead of letting the prompt cache lapse.
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
# Manage Idle Resumption A session that idles past its prompt-cache TTL (5 minutes by default, up to 1 hour with an explicit TTL) pays a full-price cache rebuild on the next turn instead of a cheap cache read — roughly 10x the per-token cost for however much context has accumulated. **Why:** Long-running work — CI-repair loops, human-in-the-loop approval waits, overnight runs, polling for a merge or deploy to finish — naturally idles between turns. Each idle-then-resume silently re-bills the entire accumulated context at full price. Across a long session this recurs every time it idles, not once. **Pattern:** - Before letting a session sit idle for a multi-hour or multi-day gap, decide deliberately: compact now (summarize and trim), or accept the coming rebuild cost. - For polling/watch loops specifically, batch checks rather than waiting synchronously turn-by-turn inside one growing thread — a detached poller that reports back once, instead of resuming the same context every N minutes, avoids paying the tax on every check. …
Read the whole file at its exact version.
How to install
mdr add edbertchan/catstack/principle-manage-idle-resumption@sha256:ab7af72d01086220The line at the top of this page pins the label git:20260825.847374d, 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_2sa57mzzxe7hjyzk)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 25, 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 (2779 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
edbertchan/catstack · 6 stars · license none declared · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2sa57mzzxe7hjyzk GET https://markdownregistry.com/api/v1/resolve?ref=edbertchan/catstack/principle-manage-idle-resumption GET https://markdownregistry.com/api/v1/blob/ab7af72d010862208b37753f4206f88e33f40cbeacbe581b3e563bb67ad89ed3
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.