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 HoangNguyen0403/agent-skills-standard --skill common-decision-disciplinegit clone --depth 1 https://github.com/HoangNguyen0403/agent-skills-standardWrote 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/hoangnguyen0403/agent-skills-standard/common-decision-discipline)<a href="https://agentmods.dev/skills/hoangnguyen0403/agent-skills-standard/common-decision-discipline"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/common-decision-discipline/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/hoangnguyen0403/agent-skills-standard/common-decision-discipline"><img src="https://agentmods.dev/badge/skills/hoangnguyen0403/agent-skills-standard/common-decision-discipline.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00062 | $0.01210 |
| Opus 5.5 | $0.00025 | $0.00484 |
| Sonnet 5.5 | $0.00012 | $0.00242 |
| Haiku 4.5 | $0.00006 | $0.00121 |
Grade A, and why
common-decision-discipline 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 20d 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.
How it starts
The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Decision Discipline
Priority: P0 (CRITICAL)
Trustworthy decisions are sized to the work, grounded in evidence, and approved on the record.
1. Size The Work
| SNC tier | Depth | Artifact |
|---|---|---|
tier=low (0-2) |
Quick | Contract in chat, no file; approval in the Handoff Payload |
tier=medium (3-4) |
Standard | Core brief file |
tier=high (5-6) |
Deep | Full brief; decompose multi-subsystem ideas first; optional specialist-architecture-guard review |
- Score with
common-task-complexity-routing; label as inference until scouted. - Downward complexity reassessment requires documented new evidence (e.g., scouted blast radius proves isolated scope), never to bypass unresolved risk, required approvals, or the sensitive-change risk floor.
- Sensitive-Change Risk Floor: Auth, money, data integrity, or trust boundaries enforce minimum
tier=mediumregardless of arithmetic SNC total; non-zero novelty or spread (S≥1 or N≥1 with C=2) escalates totier=high. - Low-Risk Maintenance: Sufficiently specified routine fixes or maintenance may use an in-chat contract rather than creating BRD/PRD/SRS files. Preserve full traceability for governed or high-risk delivery.
- Downstream specialist workers execute against their assigned briefs; do not reload or repeat parent intake in specialists.
- A symptom without a root cause routes to
dev-fix; never compare fixes for an undiagnosed bug.
2. Shared Understanding
- Draft first, then write back two lists: You said and I assumed. Allow one correction round.
- Skip the write-back when outcome, constraints, non-goals, and acceptance criteria are already stated; confirm in one line.
- Reuse an accepted contract; never reopen it.
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 20d ago Changed · +8 lines 0df5a2ce4744
- 28d ago First seen · 90 lines · 62 tokens per session scan A 6cdaae6190c1
common-decision-discipline is a skill published in the GitHub repository HoangNguyen0403/agent-skills-standard (582 stars, last pushed today), licensed MIT. It adds 62 tokens to every session and 1,210 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-30.
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