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 managing-timelinesgit 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/managing-timelines)<a href="https://agentmods.dev/skills/liqiongyu/lenny_skills_plus/managing-timelines"><img src="https://agentmods.dev/badge/skills/liqiongyu/lenny_skills_plus/managing-timelines/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/managing-timelines"><img src="https://agentmods.dev/badge/skills/liqiongyu/lenny_skills_plus/managing-timelines.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 | $0.00037 | $0.02250 |
| Opus 5 | $0.00018 | $0.01125 |
| Sonnet 5 | $0.00007 | $0.00450 |
| Haiku 4.5 | $0.00004 | $0.00225 |
Grade A, and why
managing-timelines 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 11d 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 — 140 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Managing Timelines
Scope
Covers
- Turning a deadline or target date into a clear commitment model (commit vs forecast vs target)
- Building a phase-based plan (Discovery → Solutioning → Build → Launch) with decision gates
- Creating a milestone tracker with simple RAG (red/amber/green) status and escalation triggers
- Protecting the team when a deadline is real (treat it like P0, reduce distractions, control scope)
- Setting a governance + comms cadence so stakeholders get early risk signals, not surprises
- Handling “fast demo, slow production” cadence (especially for AI/ML features) via explicit outer-loop work
When to use
- “We need to ship by . Create a timeline/milestone plan and status cadence.”
- “We have a launch date; convert this into phases, milestones, and a comms plan.”
- “Stakeholders keep asking for dates; define what we can actually commit to and when.”
- “The project feels off-track; set up RAG status + weekly exec review and escalation.”
- “We can demo quickly, but production will take longer—help set expectations and plan the outer loop.”
When NOT to use
- You haven’t defined the problem/outcome yet (use
problem-definition) - You need to pick which initiatives matter most (use
prioritizing-roadmap) - You primarily need to cut scope to fit an appetite/timebox (use
scoping-cutting) - You need a decision-ready PRD or build-ready spec/design doc (use
writing-prds/writing-specs-designs) - You’re planning the actual launch rollout, rollback, and go/no-go (use
shipping-products) - The plan is dominated by unknowns and you need hypothesis-driven experimentation before committing to dates (use
planning-under-uncertainty)
Inputs
Minimum required
- The deliverable and success bar (“done means…”) + key users/stakeholders
- The date type: fixed deadline (external) vs target (internal) vs window (e.g., “late March”)
- Constraints and non-negotiables (quality, compliance, privacy/security, platform, budget)
- Team shape + capacity assumptions (who’s building; availability; parallel work)
- Known dependencies and risks (other teams, vendors, data availability, approvals)
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 1.5 KB
- eval/SHOWCASE.md 5.2 KB
- eval/with_skill.md 27 KB
- eval/without_skill.md 18 KB
- README.md 1.8 KB
- references/CHECKLISTS.md 2.2 KB
- references/EXAMPLES.md 824 B
- references/INTAKE.md 2.2 KB
- references/RUBRIC.md 3.5 KB
- references/SOURCE_SUMMARY.md 2.3 KB
- references/TEMPLATES.md 3.6 KB
- references/WORKFLOW.md 4.8 KB
- skillpack.json 378 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.
- 11d ago First seen · 140 lines · 37 tokens per session scan A 516f15c8a044
managing-timelines is a skill published in the GitHub repository liqiongyu/lenny_skills_plus (52 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 37 tokens to every session and 2,250 once invoked, about $0.0002 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 2026-08-30.
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