managing-timelines

managing-timelines is a skill for Claude Code, Codex from liqiongyu/lenny_skills_plus. It costs 37 tokens per session (2,250 once invoked), scanned A, original, Apache-2.0.

A planning method that turns a deadline into phases, milestones, status checks, and decisions about scope. A milestone is a significant checkpoint, while red/amber/green status shows whether work is on track, at risk, or off track.

In plain words
What is it for?
Use it to create a phase plan, track milestones, set escalation rules, organize stakeholder updates, and plan delivery when a project is slipping.
Why use it?
It makes commitments and risks visible before a launch date is missed. It also helps teams control extra requests and explain why a quick demonstration may take longer to make production-ready.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to create a phase plan, track milestones, set escalation rules, organize stakeholder updates, and plan delivery when a project is slipping.

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Install with agentmods
npx agentmods add skills/liqiongyu/lenny_skills_plus/managing-timelines
Install

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.

Any agent
npx skills add liqiongyu/lenny_skills_plus --skill managing-timelines
Clone the repo
git clone --depth 1 https://github.com/liqiongyu/lenny_skills_plus

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for managing-timelines

README.md
[![agentmods](https://agentmods.dev/badge/skills/liqiongyu/lenny_skills_plus/managing-timelines/github.svg)](https://agentmods.dev/skills/liqiongyu/lenny_skills_plus/managing-timelines)
Your own site
<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.

agentmods 80×15 button for managing-timelines

Your own site · 80×15
<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>
Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,250 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce 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

Measured 11d ago against content hash 516f15c8a044, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

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.

skills/managing-timelines/SKILL.md · 140 lines

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)

Read the full file on GitHub · 140 lines

Changes

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.

  1. 11d ago First seen · 140 lines · 37 tokens per session scan A 516f15c8a044

Subscribe to this mod's changes

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.