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 working-backwardsgit 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/working-backwards)<a href="https://agentmods.dev/skills/liqiongyu/lenny_skills_plus/working-backwards"><img src="https://agentmods.dev/badge/skills/liqiongyu/lenny_skills_plus/working-backwards/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/working-backwards"><img src="https://agentmods.dev/badge/skills/liqiongyu/lenny_skills_plus/working-backwards.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 | $0.00018 | $0.01872 |
| Opus 5.5 | $0.00007 | $0.00749 |
| Sonnet 5.5 | $0.00004 | $0.00374 |
| Haiku 4.5 | $0.00002 | $0.00187 |
Grade A, and why
working-backwards 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 2mo 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 — 137 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Working Backwards (PR/FAQ + Backcasting)
Scope
Covers
- Turning a product idea into a customer-centric future press release + FAQ (PR/FAQ)
- Creating 2–3 divergent PR options to avoid solution lock-in
- Backcasting a launch: a concrete GTM + operational “machinery” plan from target date back to today
- Surfacing stakeholders, dependencies, constraints, and risks early
When to use
- “Write a PR/FAQ for…”
- “Working backwards from the customer…”
- “Create a future press release / press release from the future”
- “Backcast a launch plan / working backwards timeline”
- “We need alignment on what we’re building before writing a PRD”
When NOT to use
- You don’t yet understand the problem and need discovery framing (use
problem-definition) - You already have narrative alignment and need detailed requirements (use
writing-prds) - You need a build-ready engineering/design spec (use
writing-specs-designs) - You’re prioritizing among many initiatives (use
prioritizing-roadmap) - You only need marketing copy for an already-built product (use
launch-marketing) - You’re doing early-stage idea validation without a clear customer problem (use
startup-ideation) - You need a long-term product vision or mission statement (use
defining-product-vision)
Inputs
Minimum required
- Product/context + target customer/user segment
- Problem statement (or symptoms) + why now
- Candidate solution idea(s) (can be vague; options are welcome)
- Constraints: timeline/launch target, platform, policy/legal, dependencies
- Success metrics (1–3) + guardrails (2–5)
Missing-info strategy
- Ask up to 5 questions from references/INTAKE.md.
- If answers remain missing, proceed with clearly labeled assumptions and provide 2–3 options (PR variants, scope, rollout).
Outputs (deliverables)
Produce a Working Backwards Pack in Markdown (in-chat; or as files if the user requests):
- Context snapshot
- PR options: 2–3 divergent future press releases (1 page each)
- Selected PR: refined future press release
- FAQ: customer + internal (business/ops/technical/legal) FAQs
- Backcasting plan: milestones to launch (owners, dates, dependencies)
- Stakeholder + “machinery” plan: approvals, comms, rollout, support readiness
- Success metrics + guardrails (+ instrumentation notes)
- Risks / Open questions / Next steps (always included)
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 5.4 KB
- eval/with_skill.md 54 KB
- eval/without_skill.md 35 KB
- README.md 1.7 KB
- references/CHECKLISTS.md 1.7 KB
- references/EXAMPLES.md 1.3 KB
- references/INTAKE.md 1.6 KB
- references/RUBRIC.md 2.7 KB
- references/SOURCE_SUMMARY.md 2.3 KB
- references/TEMPLATES.md 3.2 KB
- references/WORKFLOW.md 3.4 KB
- skillpack.json 375 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.
- 2mo ago First seen · 137 lines · 18 tokens per session scan A ac84441d4ecf
working-backwards is a skill published in the GitHub repository liqiongyu/lenny_skills_plus (53 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 18 tokens to every session and 1,872 once invoked, about $0.0001 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 2026-09-03.
working-backwards compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| working-backwardsliqiongyu/lenny_skills_plus | Skill | 53 | 5mo ago | Apache-2.0 | A | 18 | Claude Code, Codex |
| happiness-skillkangarooking/cangjie-skill | Skill | 12k | 1mo ago | MIT | A | 136 | Claude Code, Codex |
| setup-matt-pocock-skillsdevcxl/mattpocock-skills-zh | Skill | 530 | 3d ago | MIT | A | 43 | Claude Code, Codex |
| pixel-art-studioAnastasiyaW/codex-claude-code-config | Skill | 214 | yesterday | MIT | A | 349 | Claude Code |
| config-validatorjmagly/aiwg | Skill | 229 | yesterday | MIT | A | 15 | Claude Code, Codex |
| aiwg-regenerate-copilotjmagly/aiwg | Skill | 229 | yesterday | MIT | A | 25 | Claude Code, Codex |
| link-checkjmagly/aiwg | Skill | 229 | yesterday | MIT | A | 29 | Claude Code, Codex |