create-plan

A system for creating a lasting project plan in files, including an overview, separate phases, and a task list.

In plain words
What is it for?
It is for planning large or multi-phase changes, recording requirements and completion criteria, dividing work into phases, and tracking tasks over time.
Why use it?
It keeps multi-step work understandable across sessions and contributors, so decisions and unfinished tasks are not lost.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/dasdigitalemomentum/opencode-processing-skills/create-plan
Any agent
npx skills add DasDigitaleMomentum/opencode-processing-skills --skill create-plan
Clone the repo
git clone --depth 1 https://github.com/DasDigitaleMomentum/opencode-processing-skills

Made for: Claude Code, Codex.

Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,506 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00036 $0.02506
Opus 5 $0.00018 $0.01253
Sonnet 5 $0.00007 $0.00501
Haiku 4.5 $0.00004 $0.00251

Measured 2d ago against content hash 21c1019bd1b5, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

create-plan 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 2d 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/create-plan/SKILL.md · 181 lines

How it starts

The opening of the file, as written. The whole thing — 181 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill: Create Plan

What This Skill Does

Creates a complete plan with the artifacts required to execute work in phases. This documentation shall serve Agents and Humans when working in consecutive sessions with the project:

  1. Plan (plans/<name>/plan.md) - Problem/context, target outcome, guiding decisions, requirements, DoD, phases overview
  2. Phases (plans/<name>/phases/phase-N.md) - Scope definition per phase (what/why)
  3. Todo List (plans/<name>/todo.md) - Trackable items with status

This skill intentionally does not author per-phase implementation plans (plans/<name>/implementation/phase-N-impl.md).

Default next step (second pass): use author-and-verify-implementation-plan to author/verify the per-phase implementation plan against current repo reality.

When to Use

  • When work is multi-phase or too large for a single session.
  • When the user explicitly requests a persistent plan.
  • When durable coordination or tracking is needed across agents, contributors, or sessions.

Do NOT use for a single bounded work package that can be gated with an inline brief containing its task, DoD, constraints, and final verification. Significance or non-triviality alone does not require plans/ persistence.

  • Preferred: the primary agent runs this skill and writes artifacts under plans/<name>/.
  • Rationale: plans are conversation-anchored (requirements, trade-offs, sequencing, DoD). Moving authorship to a subagent risks losing intent and introducing gaps.
  • Read existing documentation first. Use doc-explorer only when bounded codebase impact/symbol analysis is necessary; do not create documentation merely to complete a plan template.
  • Optional (edge cases): use doc-explorer only to materialize/format a large set of plan files after the primary has finalized content and structure.

Routing Matrix (Who does what)

  • Writes: plans/<name>/plan.md, plans/<name>/phases/**, plans/<name>/todo.md, and creates directories under plans/<name>/.
  • Does NOT write: plans/<name>/implementation/** (use author-and-verify-implementation-plan).
  • Primary: owns requirements, scope, DoD, phase breakdown, gating.
  • doc-explorer: optional for repo-anchored analysis persisted into docs/** and/or mechanical plan materialization.
  • implementer: never used for plan authoring.

Read the full file on GitHub · 181 lines

Files

What ships with it

3 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.

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. 2d ago First seen · 181 lines · 36 tokens per session scan A 21c1019bd1b5

Subscribe to this mod's changes

create-plan is a skill published in the GitHub repository DasDigitaleMomentum/opencode-processing-skills (59 stars, last pushed 22d ago), licensed MIT. It adds 36 tokens to every session and 2,506 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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