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 jhlee0409/all-for-claudecode --skill principlesgit clone --depth 1 https://github.com/jhlee0409/all-for-claudecodeWrote 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/jhlee0409/all-for-claudecode/principles)<a href="https://agentmods.dev/skills/jhlee0409/all-for-claudecode/principles"><img src="https://agentmods.dev/badge/skills/jhlee0409/all-for-claudecode/principles.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 | $0.00012 | $0.00848 |
| Opus 5 | $0.00006 | $0.00424 |
| Sonnet 5 | $0.00002 | $0.00170 |
| Haiku 4.5 | $0.00001 | $0.00085 |
Grade B, and why
afc:principles scanned grade B 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 8d 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
!`cat .claude/afc.config.md 2>/dev/null || echo "[CONFIG NOT FOUND] .claude/afc.config.md not found. Create it with /afc:init."` How it starts
The opening of the file, as written. The whole thing — 108 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/afc:principles — Manage Project Principles
Creates and manages the project's core principles (constitution). Stored in .claude/afc/memory/principles.md and referenced across all sessions.
Arguments
$ARGUMENTS— (optional) action directive:- not specified: view current principles
add {principle}: add a new principleremove {number}: remove a principleinit: interactive initial setup
Project Config (auto-loaded)
!cat .claude/afc.config.md 2>/dev/null || echo "[CONFIG NOT FOUND] .claude/afc.config.md not found. Create it with /afc:init."
Execution Steps
1. Check Current State
Read .claude/afc/memory/principles.md:
- If present: load existing principles
- If absent: empty state (show
initinstructions)
2. Action Branch
A. View (no arguments)
Display current principles list:
Project Principles
├─ MUST-001: {principle}
├─ MUST-002: {principle}
├─ SHOULD-001: {principle}
└─ Last updated: {date}
B. Initial Setup (init)
Collect principles interactively:
- Analyze project context (CLAUDE.md, package.json, code structure)
- Suggest automatically extractable principles:
- Comply with {config.architecture} rules
- Follow {config.code_style}
- Zero lint warnings (per {config.ci})
- etc.
- Ask user for additional principles (AskUserQuestion)
- Structure collected principles
C. Add (add)
- Determine strength of the new principle (MUST / SHOULD / MAY)
- Add to principles.md
- Update version
D. Remove (remove)
- Confirm the principle
- Remove after user confirmation
- Update version (MAJOR)
3. Storage Format
# Project Principles
> Version: {MAJOR.MINOR.PATCH}
> Last Updated: {YYYY-MM-DD}
## MUST (non-negotiable)
- **MUST-001**: {principle} — {rationale}
- **MUST-002**: {principle} — {rationale}
## SHOULD (strongly recommended)
- **SHOULD-001**: {principle} — {rationale}
## MAY (optional)
- **MAY-001**: {principle} — {rationale}
## Changelog
- {date}: {change description}
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.
- 8d ago First seen · 108 lines · 12 tokens per session scan B a19737e6820c
afc:principles is a skill published in the GitHub repository jhlee0409/all-for-claudecode (7 stars, last pushed 5mo ago), licensed MIT. It adds 12 tokens to every session and 848 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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investigate
Systematic root-cause debugging: find the cause before writing any fix.