phase-planner

phase-planner is a skill for Claude Code from sixoverground/claude-phases. It costs 85 tokens per session (2,028 once invoked), scanned A, original, MIT.

A planning workflow that writes a phased implementation plan to a project-named Markdown file in a repository. It divides work into phases, each intended to produce one pull request, and records the repositories’ checks and review process.

In plain words
What is it for?
Use it to plan multi-repository projects, create phase plans for a phase driver, and document CI, review, repository, and merge requirements.
Why use it?
It turns a broad project request into an executable plan that matches how the repositories actually test and review changes.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions Claude Code.

Part of the claude-phases plugin — 2 skills shipped together

Good fit Use it to plan multi-repository projects, create phase plans for a phase…

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sixoverground/claude-phases/phase-planner
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 sixoverground/claude-phases --skill phase-planner
Clone the repo
git clone --depth 1 https://github.com/sixoverground/claude-phases

Made for: Claude Code.

Or install claude-phases, the plugin that ships this one along with the rest of its 2 skills.

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 phase-planner

README.md
[![agentmods](https://agentmods.dev/badge/skills/sixoverground/claude-phases/phase-planner.svg)](https://agentmods.dev/skills/sixoverground/claude-phases/phase-planner)
Your own site
<a href="https://agentmods.dev/skills/sixoverground/claude-phases/phase-planner"><img src="https://agentmods.dev/badge/skills/sixoverground/claude-phases/phase-planner.svg" alt="Measured on agentmods" height="20"></a>
Per session 85 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,028 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 $0.00085 $0.02028
Opus 5 $0.00043 $0.01014
Sonnet 5 $0.00017 $0.00406
Haiku 4.5 $0.00009 $0.00203

Measured 6d ago against content hash 244bc0b36baf, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

phase-planner 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 6d 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/phase-planner/SKILL.md · 115 lines

How it starts

The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Phase planner

You write the plan that phase-driver executes. Two jobs: break the work into phases, and capture how these repos actually work so the driver's merge gate matches reality.

Read references/detection.md for the detection procedure and references/hygiene.md for the repo checklist when you reach those steps.

The format you're writing is specified in references/format.md, and every front-matter key in references/configuration.md. Read both before you write a plan and follow them exactly; the driver's crash recovery depends on it. references/plan-template.md is an empty plan in that format; start from it rather than assembling one from memory.

1. Ask three things

Only three. Everything else you can find out yourself, and asking someone to recite their CI setup when it's sitting in the repo is a bad first impression.

  1. What are we building or changing? A few sentences.
  2. Which repos? owner/name, possibly several.
  3. Project name? Lowercase, hyphenated. Becomes the plan's filename.

One more thing you need but shouldn't have to ask for: home_repo, where the plan file lives and the only repo the driver writes state to. With a single repo it's that repo. With several, propose the one the work centres on. Usually the backend or the repo with the most phases, and confirm it in the same breath as your detection findings. Don't leave it unset: it's required, and a plan without it doesn't load.

2. Detect how each repo works

Never assume. Inspect, then show your evidence. See references/detection.md for what to query and what each result implies.

Report findings as a short table before writing anything:

acme/acme-web
  default branch   main              (from the repo)
  CI               2 checks on recent PRs: build, test
  dispatch         workflow_dispatch declared in ci.yml
  reviewer         Copilot reviewed the last 5 PRs
  verify           local (package.json, node)

Then say what you inferred, and let them correct it. People will tell you "we're moving off Copilot" or "that repo's CI is broken, ignore it", facts you cannot read from the API.

Read the full file on GitHub · 115 lines

Files

What ships with it

5 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. 6d ago First seen · 115 lines · 85 tokens per session scan A 244bc0b36baf

Subscribe to this mod's changes

phase-planner is a skill published in the GitHub repository sixoverground/claude-phases (2 stars, last pushed 2d ago), licensed MIT. It adds 85 tokens to every session and 2,028 once invoked, about $0.0004 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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