Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add Borda/AI-Rig/plugin install researchWrote 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/borda/ai-rig/retro)<a href="https://agentmods.dev/skills/borda/ai-rig/retro"><img src="https://agentmods.dev/badge/skills/borda/ai-rig/retro.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 5.1 | $0.00040 | $0.06491 |
| Opus 5 | $0.00020 | $0.03245 |
| Sonnet 5 | $0.00008 | $0.01298 |
| Haiku 4.5 | $0.00004 | $0.00649 |
Grade C, and why
retro scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Recursive force deletehighDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
- Retro run dirs don't write `result.jsonl` — exempt from automated 30-day TTL cleanup (exempt per `.claude/rules/foundry-artifact-lifecycle.md` — no `result.jsonl` = cleanup skipped); remove manually when done (`rm -rf How it starts
The opening of the file, as written. The whole thing — 391 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Post-run retrospective analysis. After /research:run completes, reads .experiments/state/<run-id>/experiments.jsonl, computes statistical significance, detects dead iterations, flags suspicious metric jumps, generates learning summary with next-hypothesis queue.
NOT for: running experiments (use /research:run); designing experiments (use /research:plan); validating methodology (use /research:judge); verifying paper implementation (use /research:verify); comparing runs from different programs/goals — --compare valid only for same-program, same-metric runs. Read-only — never modifies code, commits, or experiment state.
Agent Resolution
Agent resolution: load and follow the protocol below. Contains: foundry check + fallback table. research:scientist in same plugin — no fallback needed if research plugin installed.
export CSID="${CLAUDE_CODE_SESSION_ID:-$PPID}"
_RESEARCH_SHARED=$(python "${CLAUDE_PLUGIN_ROOT:-plugins/cc_research}/bin/resolve_shared.py" 2>/dev/null) # timeout: 5000
[ -z "$_RESEARCH_SHARED" ] && { echo "! Plugin path resolution failed — ensure research plugin installed and CLAUDE_PLUGIN_ROOT set, or invoke /research:retro from project root."; exit 1; }
echo "$_RESEARCH_SHARED" > "${TMPDIR:-/tmp}/research-shared-${CSID}" # cold resolve — every later site reads this sentinel instead of re-running python
cat "$_RESEARCH_SHARED/agent-resolution.md"
Retro Mode (Steps T1–T7)
Triggered by retro, retro <run-id>, or retro <run-id> --compare <run-id-2>.
Defaults: --threshold 0.001, --alpha 0.05.
Unsupported flag check: load and follow the protocol below. Supported flags for this skill: --compare, --threshold, --alpha.
# loads: unsupported-flag-protocol.md
export CSID="${CLAUDE_CODE_SESSION_ID:-$PPID}"
IFS= read -r _RESEARCH_SHARED < "${TMPDIR:-/tmp}/research-shared-${CSID}" 2>/dev/null || _RESEARCH_SHARED="" # warm read (Check 41)
cat "$_RESEARCH_SHARED/unsupported-flag-protocol.md"
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.
- 6d ago First seen · 391 lines · 40 tokens per session scan C 736a8e7b9f30
retro is a skill published in the GitHub repository Borda/AI-Rig (26 stars, last pushed 2d ago), licensed Apache-2.0. It adds 40 tokens to every session and 6,491 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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