checkpoint SKILL.md skillA
checkpoint from ariaxhan/kernel-claude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ariaxhan/kernel-claude/checkpoint@git:20260828.e3ca514Pins git:20260828.e3ca514 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ariaxhan/kernel-claude
- Path
skills/checkpoint/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260828.e3ca514, committed Aug 28, 2026
- First version recorded
- Jul 11, 2026
- Size
- 2,913 bytes
- Repository stars
- 14
- License
- MIT
Save bounded progress as kernel.checkpoint/v1 for exact resume after reset. Triggers: checkpoint, save progress, context reset, compact soon, long task.
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
<skill id="checkpoint">
<purpose>
The small resumable manifest. A handoff transfers a whole session; a checkpoint records
bounded progress INSIDE a long-running task so work can continue after a context reset
with a fresh, minimal context instead of an inherited transcript.
When to fire (EXP-L21: attention efficiency decays to ~11% late-session; a reset from a
checkpoint restores the flat ~50-70k load-bearing line):
- a long task crosses a natural boundary (a commit lands, a phase completes)
- context is about to compact, or the session is degrading (anchor-drift, I0.13)
- the manifest's execution.checkpoints list says so
Checkpoint vs handoff: same task + same session continuation → checkpoint.
Ending the session / transferring to a future session with decisions and policy → handoff.
</purpose>
<flow>
1. Gather provenance:
```bash
git branch --show-current && git rev-parse HEAD && git status --short
```
2. Write `_meta/checkpoints/{task}-{timestamp}.json` per
schemas/kernel.checkpoint.v1.schema.json:
- task: goal + handoff_ref/contract_ref if they exist
- steps_completed: each with EVIDENCE (commit sha, test output, command result),
…Read the whole file at its exact version.
How to install
mdr add ariaxhan/kernel-claude/checkpoint@sha256:ac40162296b1749dThe line at the top of this page pins the label git:20260828.e3ca514, 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_4jxdftqugnrthjjw)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jul 11, 2026 and Aug 28, 2026, about one every 16 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260828.e3ca514 latest | 2026-08-28 | e3ca514 | 2,913 B | A | view · diff |
| git:20260711.27e8b72 | 2026-07-11 | 27e8b72 | 3,004 B | A | view · diff |
| git:20260711.47710b5 | 2026-07-11 | 47710b5 | 2,922 B | A | view · diff |
| git:20260711.12397de | 2026-07-11 | 12397de | 2,922 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 (2913 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
ariaxhan/kernel-claude · 14 stars · license MIT · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4jxdftqugnrthjjw GET https://markdownregistry.com/api/v1/resolve?ref=ariaxhan/kernel-claude/checkpoint GET https://markdownregistry.com/api/v1/blob/ac40162296b1749d3e88d4046ad39351bb17be25ed636d636bbe55202424b340
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.
More from ariaxhan/kernel-claude
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