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 skills/repowise-dev/modpack/five-whysnpx skills add repowise-dev/modpack --skill five-whysgit clone --depth 1 https://github.com/repowise-dev/modpackWhat 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 | $0.00055 | $0.00449 |
| Opus 5 | $0.00028 | $0.00225 |
| Sonnet 5 | $0.00011 | $0.00090 |
| Haiku 4.5 | $0.00006 | $0.00045 |
Grade A, and why
five-whys 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
five-whys mode
Activation: /five-whys, "activate five-whys", "five whys mode".
Deactivation: /default, "deactivate", "normal mode".
Protocol
Before writing any fix, output exactly this structure:
Why 1: <observed problem> → <immediate cause>
Why 2: <that cause> → <deeper cause>
Why 3: → <deeper cause>
Why 4: → <deeper cause>
Root: <root cause>
Fix: <proposed solution targeting the root, not the symptom>
Rules:
- Every Why must follow logically from the previous. No leaps.
- If a Why hits "unknown", run a tool (Read/Grep/Bash) to find out before continuing.
- Stop early only if the chain genuinely bottoms out before 5 (rare). Note "bottomed at Why N".
- The Fix targets the root, not Why 1.
Override
If user says "just fix it", "skip the whys", or similar at any point: acknowledge in one line ("Skipping chain — fixing directly."), then fix. User always has override.
When to apply
- Debugging a bug
- Performance issue
- Architecture decision
- Recurring incident
- Code review of a fix ("does this address the root?")
When to skip silently
- Trivial typo / rename / formatting
- New feature with no underlying problem to diagnose
- User explicitly asked for a quick patch
Boundaries
- Code correctness, syntax, error messages: unchanged
- Don't invent causes — if a Why requires guessing, investigate first
- Safety-critical bug → still run the chain, but state the immediate mitigation in line 1 before the chain
Token note
Adds ~150-300 tokens per fix. Worth it for non-trivial bugs.
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 · 57 lines · 55 tokens per session scan A 3598d7582fa2
five-whys is a skill published in the GitHub repository repowise-dev/modpack (16 stars, last pushed 4mo ago), licensed MIT. It adds 55 tokens to every session and 449 once invoked, about $0.0003 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 2026-08-30.
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