plan

plan is a skill for Claude Code from brain-bootstrap/claude-code-brain-bootstrap. It costs 42 tokens per session (513 once invoked), scanned A, original, MIT.

A planning skill that creates a checkable implementation plan before work begins. It reads project guidance and records the plan in a task file.

In plain words
What is it for?
It helps plan work involving several steps, files, or architectural decisions, including tests and review checks.
Why use it?
It makes large or unclear changes easier to organize and helps prevent important steps, risks, or checks from being missed.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions subagents.

Good fit It helps plan work involving several steps, files, or architectural decisions, including tests and review checks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/brain-bootstrap/claude-code-brain-bootstrap/plan
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 brain-bootstrap/claude-code-brain-bootstrap --skill plan
Clone the repo
git clone --depth 1 https://github.com/brain-bootstrap/claude-code-brain-bootstrap

Made for: Claude Code.

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/brain-bootstrap/claude-code-brain-bootstrap/plan/github.svg)](https://agentmods.dev/skills/brain-bootstrap/claude-code-brain-bootstrap/plan)
Your own site
<a href="https://agentmods.dev/skills/brain-bootstrap/claude-code-brain-bootstrap/plan"><img src="https://agentmods.dev/badge/skills/brain-bootstrap/claude-code-brain-bootstrap/plan/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 plan

Your own site · 80×15
<a href="https://agentmods.dev/skills/brain-bootstrap/claude-code-brain-bootstrap/plan"><img src="https://agentmods.dev/badge/skills/brain-bootstrap/claude-code-brain-bootstrap/plan.svg" alt="Reviewed on agentmods" width="80" 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 513 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 $0.00042 $0.00513
Opus 5.5 $0.00017 $0.00205
Sonnet 5.5 $0.00008 $0.00103
Haiku 4.5 $0.00004 $0.00051

Measured 1mo ago against content hash 00f4ed698e7d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 1mo 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.

.claude/skills/plan/SKILL.md · 67 lines

What it actually says

Plan Skill

Create a structured, checkable implementation plan before writing any code.

When to use

  • Task requires 3 or more steps
  • Task touches multiple files or layers
  • Task involves an architectural decision
  • Any time the path forward is not immediately obvious

Protocol

1. Read mandatory context first

  • claude/tasks/todo.md — current task state (are we resuming?)
  • claude/tasks/lessons.md — relevant past lessons
  • claude/architecture.md — project structure
  • claude/rules.md — golden rules

2. Understand the full scope

  • What is the exact goal? What does done look like?
  • What layers does this touch (schema, service, API, tests, docs)?
  • What already exists that is relevant?
  • What are the failure modes?

3. Write the plan to claude/tasks/todo.md

Format:

# Task: <Clear, concise title>

**Goal:** <One sentence. What is done when this is complete?>
**Branch:** <git branch name, if applicable>
**Loaded docs:** <which claude/*.md files you read>

## Steps
- [ ] 1. <First action — specific file or command>
- [ ] 2. <Second action>
- [ ] 3. <Third action>
...

## Review Checklist
- [ ] Tests pass
- [ ] Linter passes
- [ ] No new warnings
- [ ] PR description ready (if applicable)

## Notes
<Any constraints, risks, or decisions to track>

4. Validate the plan (optional — for complex tasks)

Spawn a plan-challenger subagent:

"Spawn plan-challenger to review this plan. Here is the plan: [paste plan]"

5. Get approval for non-trivial plans

Present the plan to the user. Wait for "proceed" or revisions before implementing.

Rules

  • NEVER start implementing before the plan is written
  • NEVER mark a step complete without proof (test result, output, etc.)
  • If something goes wrong mid-execution: STOP, re-read the plan, update it, then continue
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. 1mo ago First seen · 67 lines · 42 tokens per session scan A 00f4ed698e7d

Subscribe to this mod's changes

plan is a skill published in the GitHub repository brain-bootstrap/claude-code-brain-bootstrap (11 stars, last pushed 5mo ago), licensed MIT. It adds 42 tokens to every session and 513 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-03.

Related

Other skills, from other repositories

implement

TRIGGER when: user asks to implement, fix, build, or work on something — whether from a docs/feat/wip plan OR a standalone task (bug fix, GitHub issue, one-off change). Examples: "work on task 1", "fix this bug", "implement feature X from the issue". Provides structured execution with profile detection, dependency…

serpro69/claude-toolbox · 81 tokens

review-spec

Use after implementing tasks or mid-feature to verify code matches design docs and ensure they are in sync. Detects spec deviations, missing implementations, doc inconsistencies, and outdated docs in design and implementation documentation.

serpro69/claude-toolbox · 44 tokens

chain-of-verification

Apply Chain-of-Verification (CoVe) prompting to improve response accuracy through self-verification. Use when complex questions require fact-checking, technical accuracy, or multi-step reasoning.

serpro69/claude-toolbox · 41 tokens

review-design

Review design, implementation, and task documents produced by design. Evaluates document quality, internal consistency, and technical soundness. Use after design completes and before starting implement.

serpro69/claude-toolbox · 37 tokens

review-architecture

Review a written architecture artifact — an ADR (docs/adr/), a broader architecture doc, the architecture section of a design doc, or a domain-reference kit (glossary + traps pages, reviewed as one composite artifact) — against the system it claims to describe. Verifies the EXISTENCE and TOPOLOGY of declared…

serpro69/claude-toolbox · 183 tokens

model

Produce or update a domain-reference kit — the durable glossary + divergences/traps pages for a bounded context. Use for domain modelling, information architecture, building a domain glossary or domain model, mapping domain concepts to code (bindings), or surfacing the decidable questions stakeholders must close…

serpro69/claude-toolbox · 129 tokens