planning

planning is a skill for Claude Code, Codex from LiorCohen/sdd. It costs 13 tokens per session (3,402 once invoked), scanned A, original, no licence file.

A planning guide that provides templates for implementation plans and creates the project phases needed for a particular change.

In plain words
What is it for?
Writing implementation plans and organising work into generated project phases.
Why use it?
It gives implementation work a consistent structure while allowing the phases to fit the change.

Skill for Claude CodeCodex

Part of the sdd plugin — 47 skills, 3 commands, 7 agents shipped together

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/liorcohen/sdd/planning
Any agent
npx skills add LiorCohen/sdd --skill planning
Clone the repo
git clone --depth 1 https://github.com/LiorCohen/sdd

Made for: Claude Code, Codex.

Or install sdd, the plugin that ships this one along with the rest of its 47 skills, 3 commands, 7 agents.

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 planning

README.md
[![agentmods](https://agentmods.dev/badge/skills/liorcohen/sdd/planning.svg)](https://agentmods.dev/skills/liorcohen/sdd/planning)
Your own site
<a href="https://agentmods.dev/skills/liorcohen/sdd/planning"><img src="https://agentmods.dev/badge/skills/liorcohen/sdd/planning.svg" alt="Measured on agentmods" height="20"></a>
Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,402 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00013 $0.03402
Opus 5 $0.00006 $0.01701
Sonnet 5 $0.00003 $0.00680
Haiku 4.5 $0.00001 $0.00340

Measured 5d ago against content hash f77317766b76, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

planning 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 5d 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.

plugin/core/skills/planning/SKILL.md · 454 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

2 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. 5d ago First seen · 454 lines · 13 tokens per session scan A f77317766b76

Subscribe to this mod's changes

planning is a skill published in the GitHub repository LiorCohen/sdd (43 stars, last pushed 6mo ago), with no licence file. It adds 13 tokens to every session and 3,402 once invoked, about $0.0001 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.