save

save is a skill for Claude Code from mrDesign-ww/vault-os. It costs 29 tokens per session (428 once invoked), scanned A, original, MIT.

A workflow for saving a Claude session into a private vault, with rules for where information goes and how stored content is checked. It separates raw session material from decisions and verified reusable knowledge.

In plain words
What is it for?
Use it to archive a session, route notes to the active work area, record decisions, rebuild the vault's search data, and update indexes and logs.
Why use it?
It prevents saved information from being mixed between work areas and helps distinguish unreviewed claims from trusted notes.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to archive a session, route notes to the active work area, record decisions, rebuild the vault's search data, and update indexes and logs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mrdesign-ww/vault-os/save
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add mrDesign-ww/vault-os --skill save
Clone the repo
git clone --depth 1 https://github.com/mrDesign-ww/vault-os

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for save

README.md
[![agentmods](https://agentmods.dev/badge/skills/mrdesign-ww/vault-os/save/github.svg)](https://agentmods.dev/skills/mrdesign-ww/vault-os/save)
Your own site
<a href="https://agentmods.dev/skills/mrdesign-ww/vault-os/save"><img src="https://agentmods.dev/badge/skills/mrdesign-ww/vault-os/save/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for save

Your own site · 80×15
<a href="https://agentmods.dev/skills/mrdesign-ww/vault-os/save"><img src="https://agentmods.dev/badge/skills/mrdesign-ww/vault-os/save.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 428 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00029 $0.00428
Opus 5 $0.00015 $0.00214
Sonnet 5 $0.00006 $0.00086
Haiku 4.5 $0.00003 $0.00043

Measured 7d ago against content hash ea5947ba6e67, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

save scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

shell/vault-template/.claude/skills/save/SKILL.md · 19 lines

What it actually says

Save this session

Use this vault-local workflow instead of the generic plugin save command.

  1. Determine the active zone from the conversation. Default to work. Never read or write another zone.
  2. Acquire bash scripts/wiki-lock.sh acquire .vault-meta/write/ZONE --ttl 3600. Every batch writer for that zone uses this same lock path. Record the returned token. Use a finally path that releases this exact token after success or failure. After every long phase and before later writes, build and checkpoint, run renew then check. Never reacquire over an expired record and continue partial work.
  3. Preserve raw session material only when useful. It is L0 and goes to the active inbox. Work inbox is wiki/workspace/projects/inbox/.
  4. Materialize explicit user decisions and verified reusable outcomes as separate project or resource pages. Use explicit L1 with memory_provenance, or explicit L2 for canonical state and workflows. Automatically inferred or uncertain claims go through memory-candidates.py and remain L0 until reviewed. Evidence paths remain L0.
  5. Update the active zone index, project index, append-only log, then overwrite its hot cache. Do not call the plugin repository's wiki-mode.py.
  6. Run memory-model.py scan, then build --zone ZONE --lock-token TOKEN, then validate --zone ZONE --lock-token TOKEN. The build is the final wiki write.
  7. Check the token again, then create a local Git checkpoint containing only this save's durable files. Never push. Release in the finally path, then run one project-scoped retrieval acceptance query with the matching named role loadout and inspect its snippet and context budget.

If validation or checkpoint fails, release the token, report the exact state, then reacquire before repair. Do not claim that context was saved while retrieval is stale or the acceptance query fails.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 19 lines · 29 tokens per session scan A ea5947ba6e67

Subscribe to this mod's changes

save is a skill published in the GitHub repository mrDesign-ww/vault-os (2 stars, last pushed 5d ago), licensed MIT. It adds 29 tokens to every session and 428 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-05.

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Use when the user says 'update context', 'update claude', 'save library', or after significant project changes.

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