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.
npx skills add fredoliveira/agents --skill backup-vaultgit clone --depth 1 https://github.com/fredoliveira/agentsWrote 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.
[](https://agentmods.dev/skills/fredoliveira/agents/backup-vault)<a href="https://agentmods.dev/skills/fredoliveira/agents/backup-vault"><img src="https://agentmods.dev/badge/skills/fredoliveira/agents/backup-vault/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.
<a href="https://agentmods.dev/skills/fredoliveira/agents/backup-vault"><img src="https://agentmods.dev/badge/skills/fredoliveira/agents/backup-vault.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00062 | $0.00668 |
| Opus 5.5 | $0.00025 | $0.00267 |
| Sonnet 5.5 | $0.00012 | $0.00134 |
| Haiku 4.5 | $0.00006 | $0.00067 |
Grade A, and why
backup-vault 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Vault backup & rotation
Purpose
Keep a rolling set of zip snapshots of the vault in ~/Documents/obsidian/backups,
pruned to a grandfather-father-son (GFS) retention schedule so the backup folder
stays bounded instead of growing forever.
The actual work is done by backup.sh (next to this file) — the logic is
deterministic, so run the script rather than reimplementing it by hand.
Retention schedule
A backup is kept if any tier wants it; everything else is deleted.
| Tier | Rule |
|---|---|
| Daily | every backup from the last 14 days |
| Weekly | newest backup of each of the 5 most recent ISO weeks |
| Monthly | newest backup of each of the 12 most recent months |
| Yearly | newest backup of each of the 5 most recent years |
Tunable at the top of backup.sh (DAILY_DAYS, WEEKLY_KEEP, MONTHLY_KEEP, YEARLY_KEEP).
What gets backed up
- The full vault at
~/Documents/obsidian/umwelt, including.obsidian(themes, plugins, settings) so a restore reproduces the exact setup. - Excluded:
.DS_Store,.Trash/, and the backup directory itself. - Archives are named
umwelt-YYYY-MM-DD.zipand contain a top-levelumwelt/folder, so restoring is justunzip umwelt-<date>.zip.
Instructions
- Run the script:
bash ~/.claude/skills/backup-vault/backup.sh- Preview without changing anything:
bash .../backup.sh --dry-run - Override paths if needed:
VAULT_DIR=... BACKUP_DIR=... bash .../backup.sh
- Preview without changing anything:
- Report the summary line (how many backups were created / kept / pruned) and the resulting archive size.
The script is idempotent per day: at most one backup is created per calendar date, so it's safe to run repeatedly. Running it both creates today's snapshot and applies retention in one pass.
Notes
- This is local only. To replicate offsite,
rsyncthebackups/directory to the remote target after running the script, e.g.rsync -a --delete ~/Documents/obsidian/backups/ <remote>:obsidian-backups/. Because retention deletes files locally, use--deleteso the remote mirrors the same pruned set. - For unattended daily runs, schedule the script (launchd/cron, or the
/scheduleskill). Nothing in the script needs an interactive session.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago First seen · 62 lines · 62 tokens per session scan A 03d9d045ee82
backup-vault is a skill published in the GitHub repository fredoliveira/agents (25 stars, last pushed 4mo ago), licensed MIT. It adds 62 tokens to every session and 668 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.
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