plan

A structured planning and review workflow for significant code changes. It examines architecture, code quality, tests, and performance, with interactive questions before continuing.

In plain words
What is it for?
Planning a large or small engineering change and reviewing its system design, code organisation, tests, performance, and security boundaries.
Why use it?
It helps identify design, testing, security, coupling, and scaling concerns before implementation begins.

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/dfridkin/clawops/plan
Any agent
npx skills add dfridkin/clawops --skill plan
Clone the repo
git clone --depth 1 https://github.com/dfridkin/clawops

Made for: Claude Code, Codex.

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 529 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 $0.00000 $0.00529
Opus 5 $0.00000 $0.00264
Sonnet 5 $0.00000 $0.00106
Haiku 4.5 $0.00000 $0.00053

Measured yesterday against content hash dacc764f28a1, 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 yesterday.

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 · 76 lines

How it starts

The opening of the file, as written. The whole thing — 76 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/plan

Structured planning and review workflow. Use before making significant code changes.


Engineering preferences (apply throughout)

  • DRY — flag repetition aggressively.
  • Well-tested — more tests rather than fewer; non-negotiable.
  • Engineered enough — not fragile/hacky, not prematurely abstracted.
  • Edge cases — thoughtfulness over speed; handle more, not fewer.
  • Explicit over clever — always.

Before starting

Ask the user which mode they want:

1 / BIG CHANGE — Work through all four sections interactively (Architecture → Code Quality → Tests → Performance), with at most 4 top issues per section. Pause for feedback after each section before moving on.

2 / SMALL CHANGE — Work through interactively with ONE question per section.


Review sections

1. Architecture review

Evaluate:

  • Overall system design and component boundaries.
  • Dependency graph and coupling concerns.
  • Data flow patterns and potential bottlenecks.
  • Scaling characteristics and single points of failure.
  • Security architecture (auth, data access, API boundaries).

2. Code quality review

Evaluate:

  • Code organisation and module structure.
  • DRY violations — be aggressive.
  • Error handling patterns and missing edge cases (call these out explicitly).
  • Technical debt hotspots.
  • Areas that are over-engineered or under-engineered.

3. Test review

Evaluate:

  • Test coverage gaps (unit, integration, e2e).
  • Test quality and assertion strength.
  • Missing edge case coverage.
  • Untested failure modes and error paths.

4. Performance review

Evaluate:

  • N+1 queries and data access patterns.
  • Memory-usage concerns.
  • Caching opportunities.
  • Slow or high-complexity code paths.

Format for every issue found

For each specific issue (bug, smell, design concern, or risk):

  1. Describe the problem concretely, with file and line references.
  2. Present 2–3 options, including "do nothing" where reasonable.
  3. For each option specify: implementation effort, risk, impact on other code, maintenance burden.
  4. Give an opinionated recommendation mapped to the engineering preferences above. Always list the recommended option first.
  5. Use AskUserQuestion — number each issue and letter each option (e.g. Issue 3, Option A) so the user can respond unambiguously.

Read the full file on GitHub · 76 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. yesterday First seen · 76 lines · 0 tokens per session scan A dacc764f28a1

Subscribe to this mod's changes

plan is a skill published in the GitHub repository dfridkin/clawops (1 stars, last pushed 1mo ago), licensed MPL-2.0. It costs nothing until one of its globs matches a file; then it loads 529 tokens. 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.

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