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 ashaykubal/essential-agents-skills --skill plan-creationgit clone --depth 1 https://github.com/ashaykubal/essential-agents-skillsWrote 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/ashaykubal/essential-agents-skills/plan-creation)<a href="https://agentmods.dev/skills/ashaykubal/essential-agents-skills/plan-creation"><img src="https://agentmods.dev/badge/skills/ashaykubal/essential-agents-skills/plan-creation/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/ashaykubal/essential-agents-skills/plan-creation"><img src="https://agentmods.dev/badge/skills/ashaykubal/essential-agents-skills/plan-creation.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 | $0.00021 | $0.06626 |
| Opus 5 | $0.00010 | $0.03313 |
| Sonnet 5 | $0.00004 | $0.01325 |
| Haiku 4.5 | $0.00002 | $0.00663 |
Grade A, and why
plan-creation 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 10d 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.
This is a copy
86% identical to plan-creation — 1,038 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 498 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Plan Creation
Create structured implementation plans through a 4-role collaborative scrum team: Product Owner, Technical Architect, Engineering & Delivery Lead, and QA/Critic. The Product Owner explores the codebase first, then Architect and Eng Lead analyze in parallel, and the QA/Critic challenges everything last. The orchestrator synthesizes all outputs into a hybrid Markdown + YAML plan.
When to Use This Skill
Load this skill when the user request matches ANY of these patterns:
| Trigger Pattern | Example User Request |
|---|---|
| Implementation planning | "Create an implementation plan for X" |
| Feature planning | "Plan how we'd build X" |
| Project scoping | "Break down X into phases and workpackages" |
| Post-research planning | "We've researched X, now create a plan" |
| Task brief creation | "Create a task brief for X" |
DO NOT use for:
- Initial topic research (use
bulwark-researchfirst) - Feasibility brainstorming (use
bulwark-brainstorm) - Quick technical questions (ask directly)
- Code review or debugging (use
code-revieworissue-debugging)
Dependencies
| Category | Files | Requirement | When to Load |
|---|---|---|---|
| Plan output template | templates/plan-output.md |
REQUIRED | Load at Stage 5 for plan structure |
| Critic output template | templates/critic-output.md |
REQUIRED | Include in QA/Critic agent prompt |
| Synthesis template | templates/synthesis-output.md |
REQUIRED | Use when writing synthesis |
| Diagnostic template | templates/diagnostic-output.yaml |
REQUIRED | Use at Stage 6 |
| Role output reference | templates/role-output.md |
OPTIONAL | Reference for parsing agent outputs |
| Subagent prompting | subagent-prompting skill |
REQUIRED | Load at Stage 1 for 4-part prompt template |
| Research synthesis | --research <file> |
OPTIONAL | If provided, include in all agent prompts |
What ships with it
5 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.
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.
- 10d ago First seen · 498 lines · 21 tokens per session scan A 1687490a5b2a
plan-creation is a skill published in the GitHub repository ashaykubal/essential-agents-skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 21 tokens to every session and 6,626 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 86% identical to plan-creation, differing in 1,038 lines, and is treated as a copy.
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