plan

plan is a skill for Claude Code, Codex from AbdurRafay2004/handoff. It costs 42 tokens per session (1,404 once invoked), scanned A, original, MIT.

A step-by-step implementation plan for medium- or high-risk coding tasks. It records which files to change, what to do in each stage, and how to verify the result.

In plain words
What is it for?
Use it before multi-file features, risky changes, or other substantial work to map existing code, state trade-offs, sequence tasks, and define tests or checks.
Why use it?
It gives an implementer enough context to work safely in an unfamiliar codebase. It also challenges whether the requested work is the right solution before detailing the build steps.

Skill for Claude CodeCodex

Part of the handoff plugin — 15 skills, 3 hooks 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/abdurrafay2004/handoff/plan
Any agent
npx skills add AbdurRafay2004/handoff --skill plan
Clone the repo
git clone --depth 1 https://github.com/AbdurRafay2004/handoff

Made for: Claude Code, Codex.

Or install handoff, the plugin that ships this one along with the rest of its 15 skills, 3 hooks.

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 plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/abdurrafay2004/handoff/plan.svg)](https://agentmods.dev/skills/abdurrafay2004/handoff/plan)
Your own site
<a href="https://agentmods.dev/skills/abdurrafay2004/handoff/plan"><img src="https://agentmods.dev/badge/skills/abdurrafay2004/handoff/plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,404 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 $0.00042 $0.01404
Opus 5 $0.00021 $0.00702
Sonnet 5 $0.00008 $0.00281
Haiku 4.5 $0.00004 $0.00140

Measured 4d ago against content hash 870a425bb44c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

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 4d 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/plan/SKILL.md · 143 lines

How it starts

The opening of the file, as written. The whole thing — 143 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Plan

Part of the Plan phase — see the workflow skill for tiers and sequencing.

Write implementation plans assuming the implementer has zero context for this codebase and questionable taste. Document everything they need: which files to touch per task, the code itself, how to test it, what to check. Bite-sized tasks. DRY. YAGNI. Test-first where the tier demands it. Frequent commits.

Tier scaling

  • T1: skip this skill — no plan, just do the task.
  • T2: short plan as bullets in chat — files to touch, order of work, verification step. No document.
  • T3: written plan file the user approves BEFORE build starts. Trade-offs stated in plain product language. Save to docs/plans/YYYY-MM-DD-<feature>.md (user preferences override).

Step 0 — challenge the premise

Before planning the how, spend a paragraph on the whether. Is this the right problem at all, or a proxy for a simpler outcome — and what actually breaks if we do nothing? Does existing code already solve part of it? Map each sub-problem to what exists before planning anything parallel. Then name the 10x version of the ask — what would deliver 10x the value for 2x the effort? Usually you still plan the ask, but naming the bigger and the do-nothing versions lets the user pick scope deliberately, not by default.

Scope check

If the spec covers multiple independent subsystems, it should have been decomposed during brief. If it wasn't, stop and suggest one plan per subsystem — each producing working, testable software on its own.

File structure first

Before defining tasks, map which files will be created or modified and what each is responsible for. This locks in decomposition decisions.

  • Each file gets one clear responsibility, with well-defined interfaces.
  • Prefer smaller focused files; edits are more reliable when a file can be held in context at once.
  • Files that change together live together — split by responsibility, not by technical layer.
  • In existing codebases follow established patterns; if a file you're modifying has grown unwieldy, a split may be part of the plan.

Read the full file on GitHub · 143 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. 4d ago First seen · 143 lines · 42 tokens per session scan A 870a425bb44c

Subscribe to this mod's changes

plan is a skill published in the GitHub repository AbdurRafay2004/handoff (4 stars, last pushed 1mo ago), licensed MIT. It adds 42 tokens to every session and 1,404 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 2026-08-31.

Related

Other skills, from other repositories

checkpoint

Write the current working state (task, decisions, files touched, open problems, next steps) to .amber/STATE.md so it survives compaction and session restarts. Use when the user asks to checkpoint/save state, before risky long operations, when context feels heavy, or before ending a work session.

yanfeid/claude-amber · 62 tokens

focus

Declare a focus contract for the current task to keep context lean — scopes which files/dirs are in play, bans out-of-scope exploration, and routes broad searches to subagents. Use when starting a task, when the user says "focus on X", or when the session is drifting across unrelated parts of the codebase.

yanfeid/claude-amber · 66 tokens

diet

Audit what is eating the context window in this project (CLAUDE.md size, MCP servers, rules that should be skills) and produce a concrete slimming plan with estimated token savings. Use when the user complains about context filling up fast, frequent compaction, or asks to optimize/reduce context usage.

yanfeid/claude-amber · 61 tokens

resume

Reload saved working state from .amber/ (STATE.md, FOCUS.md, checkpoint.md) and continue the previous task. Use when the user says resume/continue where we left off, or at the start of a session in a project that has an .amber directory.

yanfeid/claude-amber · 55 tokens

building

Implementation skill for writing production code with TDD. Covers the RED-GREEN-REFACTOR cycle, false-RED detection, vertical slicing, scope escalation, test process discipline, and code generation patterns. Loaded by component-builder and bug-investigator.

romiluz13/cc10x · 53 tokens

memory-and-handoff

Two-mode skill: (1) session memory — load/persist durable workflow state under .cc10x/ (activeContext, patterns, progress) so context survives compaction; (2) handoff package — portable, secrets-redacted export for a coworker, different tool, or fresh non-cc10x session.

romiluz13/cc10x · 70 tokens