Agent Skill
Session Compaction And Restore skill
session-compaction-and-restoremvschwarz/openrigpackages/daemon/assets/plugins/openrig-core/skills/session-compaction-and-restore/SKILL.md
Use when reasoning about what survives compaction/context-loss/restart/seat-refresh, designing a high-fidelity restore packet, or distinguishing native runtime resume vs fork vs artifact-backed mental-model rebuild. Covers the 4 failure modes that prevent honest restore (compacted seat drops hot potato; restore packet preserves details but loses product intent; runtime resume mistaken for handover or fork; rebuilt seat starts with stale instructions).
always on
88 tokname + description
once used
2,179 tokSKILL.md body
bundled files
0
repo stars
8.1kGitHub
Install the Session Compaction And Restore skill
Skills CLI (Claude Code, Codex, Cursor and others)
npx skills add https://github.com/mvschwarz/openrig --skill session-compaction-and-restore
Claude Code, by hand (all projects)
git clone --depth 1 https://github.com/mvschwarz/openrig.git /tmp/openrig mkdir -p ~/.claude/skills cp -R /tmp/openrig/packages/daemon/assets/plugins/openrig-core/skills/session-compaction-and-restore ~/.claude/skills/session-compaction-and-restore
For one project only, copy the folder into .claude/skills/ in that project instead. The agent picks it up when a task matches its description.
What it costs your context
Agent Skills load in three steps. Tokens counted with the o200k tokenizer; your model's count will differ a little.
| When | What loads | Cost |
|---|---|---|
| Every session | Name and description | 88 tok |
| When the agent uses it | The SKILL.md instructions | 2,179 tok |
| Only if opened | No bundled files | — |
Until it is used, session-compaction-and-restore costs about 15× less than the median MCP server we measured (1,362 tokens on every turn). Installing all 94 skills from mvschwarz/openrig would load 6,757 tokens of descriptions. Skills vs MCP study
Checks
Our checks found nothing to flag: it follows the Agent Skills specification's naming and size guidelines and doesn't pipe downloads into a shell.
Checked 2026-10-22 · method
What's inside
The headings of its SKILL.md. Read the full file on GitHub.
- Session Compaction and Restore
- Use this when
- Don't use this when
- The 5 distinctions (do not collapse)
- The three mechanisms — who owns each (verified vs main d37a08ad, 2026-07-21)
- Claude's own idle compaction while managed compaction is on
- Current CLI surface (operator / kernel seats; verified vs main d37a08ad)
- Failure modes (4)
- Proof standard
- Canonical packet contract (16-field, v0)
- Memory surfaces consumed at restore time
- See also
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