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 agentmods add commands/nguyenthienthanh/aura-frog/plan-undogit clone --depth 1 https://github.com/nguyenthienthanh/aura-frogWrote 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/commands/nguyenthienthanh/aura-frog/plan-undo)<a href="https://agentmods.dev/commands/nguyenthienthanh/aura-frog/plan-undo"><img src="https://agentmods.dev/badge/commands/nguyenthienthanh/aura-frog/plan-undo.svg" alt="Measured on agentmods" 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 | $0.00000 | $0.00411 |
| Opus 5 | $0.00000 | $0.00205 |
| Sonnet 5 | $0.00000 | $0.00082 |
| Haiku 4.5 | $0.00000 | $0.00041 |
Grade A, and why
plan-undo 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 4d 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
/aura-frog:plan-undo
Restore the latest checkpoint (LIFO). Alias for /aura-frog:plan undo [<id>] (v3.7.2+).
Usage
/aura-frog:plan-undo # active node (deepest non-null in active path)
/aura-frog:plan-undo <NODE_ID>
/aura-frog:plan-undo --dry-run # preview
/aura-frog:plan-undo --list # list available checkpoints for the node
Delegation
bash aura-frog/scripts/plans/undo-decision.sh [<NODE_ID>] [--dry-run] [--list] [--force]
The script:
- Resolves target: explicit arg, else walks
active.{task,story,feature,initiative}for deepest non-null. - Picks the latest
.claude/plans/checkpoints/<id>.<ISO8601>.json(LIFO). - Restores the node body (base64-decoded from
node_state_before_b64). - Moves the consumed checkpoint to
.consumedso LIFO advances. - Appends
history.jsonl event=undo.
Multi-step undo works — call again to undo further. Retention cap is 5 checkpoints per node (per rules/workflow/checkpoint-discipline.md).
Not undoable: trace/history appends (append-only by design), archived nodes (terminal), mutations older than the retention window.
Git-state rollback (the git_sha in each checkpoint) is recorded but NOT auto-restored — git resets are deferred to a follow-up that asks for explicit user confirmation; v3.7.2 ships the plan-only undo.
Full protocol in commands/plan.md.
Deprecation timeline: soft-deprecated v3.7.2, warning v4.0, removed v5.0.
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.
- 4d ago First seen · 38 lines · 0 tokens per session scan A b2d1e0c9b3e6
plan-undo is a command published in the GitHub repository nguyenthienthanh/aura-frog (24 stars, last pushed 10d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 411 tokens. 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.
Other commands, from other repositories
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speckit.specify
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speckit.checklist
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speckit.implement
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speckit.tasks
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speckit.clarify
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