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 ljucask/pureinn-product-development --skill pm-business-rule-criticalgit clone --depth 1 https://github.com/ljucask/pureinn-product-developmentWrote 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/ljucask/pureinn-product-development/pm-business-rule-critical)<a href="https://agentmods.dev/skills/ljucask/pureinn-product-development/pm-business-rule-critical"><img src="https://agentmods.dev/badge/skills/ljucask/pureinn-product-development/pm-business-rule-critical/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/ljucask/pureinn-product-development/pm-business-rule-critical"><img src="https://agentmods.dev/badge/skills/ljucask/pureinn-product-development/pm-business-rule-critical.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 | $0.00069 | $0.01676 |
| Opus 5 | $0.00034 | $0.00838 |
| Sonnet 5 | $0.00014 | $0.00335 |
| Haiku 4.5 | $0.00007 | $0.00168 |
Grade A, and why
pm-business-rule-critical 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 12d 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 — 172 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PM - Business Rule: Critical Invariant (JIT Helper)
Agent mode (--agent)
Supports --agent: runs autonomously in a subagent, drafts the artifact from existing inputs, and returns a short summary + coverage note.
- No flag → interactive (default); if inputs are heavy, offer agent mode.
--agent→ obey. First check inputs are complete. Anything missing: do NOT invent it - mark[ASSUMED - what/why]in the output and summary. Never hallucinate to fill a gap.- Review required: the artifact contains commitments - after drafting, require the user's review before finalizing; do not close decisions autonomously.
What this skill does
Adds a single Critical priority rule to domain/business_rules.md.
A rule belongs here when:
- Violation causes financial loss, legal exposure, or irreversible system damage
- It must hold in ALL circumstances - no exceptions, no admin overrides
- Breaching it is a system failure, not a policy deviation
If the rule has exceptions or context-dependent variations → use pm-business-rule-core (High priority).
If it is a compliance or policy rule → use pm-business-rule-governance.
When to run: During pm-feature-design when the JIT design reveals a missing invariant that must be captured before build. Or standalone when a business decision introduces a new hard constraint.
Dependencies
Required before running:
pm-business-rules-library-domain/business_rules.mdmust exist (initialized in Phase 4)pm-entity-registry- entity and lifecycle context needed to scope the rule correctly
Produces artifacts used by:
pm-feature-design- JIT design reads BR-IDs when defining Feature Card Section 1 (Biznis Mantinely)- Build phase - developers implement invariant enforcement as guard conditions
Step 0: Current state check
If domain/business_rules.md does not exist yet, do not attempt to create it here - tell the user to run /pm-business-rules-library first (it initializes the register), then return to this skill.
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.
- 12d ago First seen · 172 lines · 69 tokens per session scan A 810ff29af93c
pm-business-rule-critical is a skill published in the GitHub repository ljucask/pureinn-product-development (2 stars, last pushed 2d ago), licensed MIT. It adds 69 tokens to every session and 1,676 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 2026-08-31.
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