plan-feature

A structured way to plan a software feature before building it. It explores the existing code and identifies acceptance criteria, affected services, and implementation tasks.

In plain words
What is it for?
Use it to plan a straightforward feature, find related code and tests, clarify affected services, and prepare an implementation checklist.
Why use it?
It turns a feature request into concrete work grounded in the current project, reducing missed areas and unclear scope.

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/makigjuro/cloudstack-ai-plugins/plan-feature
Any agent
npx skills add makigjuro/cloudstack-ai-plugins --skill plan-feature
Clone the repo
git clone --depth 1 https://github.com/makigjuro/cloudstack-ai-plugins

Made for: Claude Code, Codex.

Per session 69 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 846 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 $0.00069 $0.00846
Opus 5 $0.00034 $0.00423
Sonnet 5 $0.00014 $0.00169
Haiku 4.5 $0.00007 $0.00085

Measured 2d ago against content hash 39d2161b941c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

plan-feature 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.

plugins/dev-workflow/skills/plan-feature/SKILL.md · 97 lines

How it starts

The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Plan Feature

When the user describes a feature they want to build, produce a structured feature plan. Explore the codebase first to ground the plan in what already exists.

Configuration

Read cloudstack.json from the project root at the start of execution. Extract relevant fields:

  • SERVICES = backend.services[] (default: discover from project structure)

If cloudstack.json does not exist, auto-detect by scanning the project structure.

Process

Phase 0: Enter Plan Mode

Always start by calling EnterPlanMode before doing anything else. Feature planning is a planning activity -- it requires codebase exploration, scope clarification, and user alignment before producing the plan. Plan mode ensures you can explore freely and get user sign-off on the approach. Exit plan mode with ExitPlanMode only after the plan is complete and the user has approved it.

  1. Clarify scope -- Ask the user if the feature description is ambiguous. Identify which service(s) are affected.
  2. Explore existing code -- Search for related entities, handlers, endpoints, and tests that the feature touches or extends.
  3. Produce the plan -- Output a structured plan using the format below.

Plan Format

# Feature: {Title}

## Summary
One-paragraph description of the feature and the problem it solves.

## Affected Services
{List services from cloudstack.json or discovered from project structure, with checkboxes for each affected one}

## Acceptance Criteria
- [ ] AC1: ...
- [ ] AC2: ...

## Implementation Tasks

### Domain
- [ ] {task description} -- `{file path or new file}`

### Application
- [ ] {task description} -- `{file path or new file}`

### Infrastructure
- [ ] {task description} -- `{file path or new file}`

### Host / Endpoints
- [ ] {task description} -- `{file path or new file}`

### Frontend
- [ ] {task description} -- `{file path or new file}`

### Tests
- [ ] {task description} -- `{file path or new file}`

## Open Questions
- Any unresolved design decisions or trade-offs to call out.

## Out of Scope
- Anything explicitly excluded from this feature.

Read the full file on GitHub · 97 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. 2d ago First seen · 97 lines · 69 tokens per session scan A 39d2161b941c

Subscribe to this mod's changes

plan-feature is a skill published in the GitHub repository makigjuro/cloudstack-ai-plugins (1 stars, last pushed 1mo ago), licensed MIT. It adds 69 tokens to every session and 846 once invoked, about $0.0003 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.

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