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/thettwe/nyann/undogit clone --depth 1 https://github.com/thettwe/nyannWhat 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 | $0.00049 | $0.00357 |
| Opus 5 | $0.00024 | $0.00179 |
| Sonnet 5 | $0.00010 | $0.00071 |
| Haiku 4.5 | $0.00005 | $0.00036 |
Grade A, and why
nyann: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 2d 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
Plugin root: This is a Claude Code plugin, NOT a CLI tool. Do NOT
search via which, npm list, pip list, or brew list. This file
is at <plugin_root>/commands/. All scripts: <plugin_root>/bin/.
Read the matching skills/*/SKILL.md for the full flow.
/nyann:undo
Wraps bin/undo.sh. Flow:
- Dry-run preview. Report which commits will be undone.
- Confirm (always for non-soft or multi-commit).
- Reset via
--strategy(soft/mixed/hard). - Report new HEAD + where changes live.
See skills/undo/SKILL.md for DISAMBIGUATION against git revert (pushed commits) and merge-commit refusal.
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.
- 2d ago First seen · 37 lines · 49 tokens per session scan A 3778c12d9bb1
nyann:undo is a command published in the GitHub repository thettwe/nyann (6 stars, last pushed 3d ago), licensed MIT. It adds 49 tokens to every session and 357 once invoked, about $0.0002 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 2026-08-31.
Other commands, from other repositories
create-namespace
Slash command that creates a new namespace file under system/namespaces/ in the personal repo, with lifecyclestate: scratch.
oss
Daily OSS contribution check - uses CLI with --json for structured data.
setup-oss
Configure OSS autopilot preferences.
forge
You are in FORGE MODE. Execute the following.
run-tests
Run tests across all MyACE components (backend, frontend, CLI).
optimize-costs
Find cost savings in infrastructure without sacrificing quality or performance.