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 blockmatic/basilic --skill retrogit clone --depth 1 https://github.com/blockmatic/basilicWrote 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/blockmatic/basilic/retro)<a href="https://agentmods.dev/skills/blockmatic/basilic/retro"><img src="https://agentmods.dev/badge/skills/blockmatic/basilic/retro/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/blockmatic/basilic/retro"><img src="https://agentmods.dev/badge/skills/blockmatic/basilic/retro.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00024 | $0.00313 |
| Opus 5 | $0.00012 | $0.00156 |
| Sonnet 5 | $0.00005 | $0.00063 |
| Haiku 4.5 | $0.00002 | $0.00031 |
Grade A, and why
retro 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
Purpose and inputs
Answer this question about the work just completed (this session, the last plan, or the diff in context):
anything you would do better in retrospect ?
Reply in chat only—never create files unless the user asks to apply a change. This is not a delivery-evidence report.
Steps
- Scope: The work that just shipped or the plan just executed—not a career retrospective, not a generic process lecture
- Be specific: Name files, APIs, grep patterns, leftover folders, APIs you taught vs what the app still calls. Skip items that were the right call
- Actionable: Each item implies a different next action (rewrite, delete, document, don't migrate). If you would not change it, omit it
- Honest: Include mistakes (broken snippets, substring grep, hunting dirs that were already gone)
- Short: A few bullets. Do not offer to implement unless asked
Verification
- Reply is chat-only unless the user asked to apply a change.
- Items are scoped to this work, not a generic process lecture.
- No delivery-evidence claim and no unsolicited follow-up work.
Handoff
Chat bullets only. Do not claim checks passed. Do not start follow-up work unless asked.
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 Changed · +14 lines 46667b4758ff
- 3d ago Changed 22eca3c91189
- 5d ago First seen · 18 lines · 24 tokens per session scan A 0ca068eece06
retro is a skill published in the GitHub repository blockmatic/basilic (89 stars, last pushed yesterday), licensed MIT. It adds 24 tokens to every session and 313 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 2026-09-03.
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