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 liqiongyu/lenny_skills_plus --skill systems-thinkinggit clone --depth 1 https://github.com/liqiongyu/lenny_skills_plusWrote 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/liqiongyu/lenny_skills_plus/systems-thinking)<a href="https://agentmods.dev/skills/liqiongyu/lenny_skills_plus/systems-thinking"><img src="https://agentmods.dev/badge/skills/liqiongyu/lenny_skills_plus/systems-thinking/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/liqiongyu/lenny_skills_plus/systems-thinking"><img src="https://agentmods.dev/badge/skills/liqiongyu/lenny_skills_plus/systems-thinking.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 | $0.00020 | $0.01969 |
| Opus 5 | $0.00010 | $0.00984 |
| Sonnet 5 | $0.00004 | $0.00394 |
| Haiku 4.5 | $0.00002 | $0.00197 |
Grade A, and why
systems-thinking 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 9d 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 — 136 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Systems Thinking
Scope
Covers
- Seeing the "whole system" behind a problem (actors, incentives, feedback loops, culture/rules)
- Anticipating second- and third-order effects (including time delays)
- Finding leverage points (small changes with outsized impact)
- Converting recurring pain into a reusable system (process, automation, or operating mechanism)
When to use
- "This is a complex ecosystem; we're missing the bigger picture."
- "What are the second-order effects if we do X?"
- "We keep solving symptoms—what's the system causing this?"
- "Map the players + incentives and how they interact."
- "We need to redesign a process/org without unintended consequences."
When NOT to use
- The problem is simple/linear and mostly execution (use a project plan/timeline).
- You need primary user research or data you don't have (do discovery first).
- You need deep quantitative forecasting/simulation (this skill produces a qualitative map + risks, not a full model).
- The decision is low-impact and fully reversible (don't over-invest).
- You need to redesign an org chart, team topology, or reporting lines (use
organizational-design; come back here only if you need to map systemic dynamics first). - You need to compare discrete options with weighted criteria and pick a winner (use
evaluating-trade-offs). - You need to plan under uncertainty with scenario trees, hedging strategies, and contingency triggers (use
planning-under-uncertainty). - You need to run a decision process with roles, meetings, and a decision log (use
running-decision-processes).
Inputs
Minimum required
- The focal decision or problem statement (1–2 sentences)
- Desired outcome + time horizon (default: 6–12 months)
- Known constraints/guardrails (trust, safety, compliance, budget, headcount)
- Known actors/stakeholders (teams, users, partners, regulators, vendors)
- What has been tried already (and what happened)
Missing-info strategy
- Ask up to 5 questions from references/INTAKE.md.
- If answers aren't available, proceed with clearly labeled assumptions and provide 2–3 alternative system framings/boundaries.
What ships with it
13 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.
- eval/eval_config.json 1.6 KB
- eval/SHOWCASE.md 6.2 KB
- eval/with_skill.md 39 KB
- eval/without_skill.md 27 KB
- README.md 1.8 KB
- references/CHECKLISTS.md 1.7 KB
- references/EXAMPLES.md 858 B
- references/INTAKE.md 1.4 KB
- references/RUBRIC.md 3.9 KB
- references/SOURCE_SUMMARY.md 1.4 KB
- references/TEMPLATES.md 1.8 KB
- references/WORKFLOW.md 3.5 KB
- skillpack.json 364 B
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.
- 9d ago First seen · 136 lines · 20 tokens per session scan A 881615fa49c7
systems-thinking is a skill published in the GitHub repository liqiongyu/lenny_skills_plus (52 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 20 tokens to every session and 1,969 once invoked, about $0.0001 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 2026-09-03.
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