Borrowing it
Nothing to install: this file belongs to Vvkmnn/claude-vigil-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Vvkmnn/claude-vigil-mcp/main/.claude/skills/claude-vigil/SKILL.mdgit clone --depth 1 https://github.com/Vvkmnn/claude-vigil-mcpWrote 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/vvkmnn/claude-vigil-mcp/claude-vigil)<a href="https://agentmods.dev/skills/vvkmnn/claude-vigil-mcp/claude-vigil"><img src="https://agentmods.dev/badge/skills/vvkmnn/claude-vigil-mcp/claude-vigil/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/vvkmnn/claude-vigil-mcp/claude-vigil"><img src="https://agentmods.dev/badge/skills/vvkmnn/claude-vigil-mcp/claude-vigil.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 | $0.00041 | $0.00485 |
| Opus 5.5 | $0.00016 | $0.00194 |
| Sonnet 5.5 | $0.00008 | $0.00097 |
| Haiku 4.5 | $0.00004 | $0.00049 |
Grade A, and why
claude-vigil 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 2mo 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.
What it actually says
Claude Vigil
Checkpoint project state before risky work. Restore if things break.
When to Use
- Before refactors, migrations, or large code changes
- Before destructive operations (file deletions, schema changes)
- Before experimenting with approaches you might revert
- Before
rm,mv,sed -i,git checkout,git reset - When the user asks to "save state" or "checkpoint"
Quick Reference
| Tool | Purpose |
|---|---|
vigil_save |
Create named checkpoint — background, returns in <5ms |
vigil_list |
Show all checkpoints with disk usage |
vigil_diff |
Compare current state to a checkpoint |
vigil_restore |
Revert to checkpoint — quicksaves current state first, preserves displaced files |
vigil_delete |
Remove a checkpoint and reclaim space |
Workflow
vigil_save(name: "before-refactor")— first save auto-detects derived dirs from.gitignore- Make the risky changes
vigil_diff(name: "before-refactor")— check what changed- If broken:
vigil_restore(name: "before-refactor")— then rebuild derived dirs - If good:
vigil_delete(name: "before-refactor")— reclaim space
After Restore
Vigil skips derived directories (node_modules, dist, target, venv). Read the output — it lists what needs rebuilding. Run the project's install and build commands.
Slot Management
Default: 3 checkpoint slots. When full, delete old checkpoints or increase capacity via max_checkpoints parameter.
Common Mistakes
| Mistake | Fix |
|---|---|
| Forgetting to rebuild after restore | Read vigil's output — it lists what needs rebuilding |
| Restoring without checking diff first | Use vigil_diff to see what will change |
| Not saving before destructive bash | Save before rm, mv, sed -i, git checkout, git reset |
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.
- 2mo ago First seen · 51 lines · 41 tokens per session scan A 37f859a353e6
claude-vigil is a skill published in the GitHub repository Vvkmnn/claude-vigil-mcp (6 stars, last pushed 7mo ago), licensed MIT. It adds 41 tokens to every session and 485 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 2026-08-31.
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