epic-ship

epic-ship is a skill for Claude Code, Codex from davidtheproduct/claude-ship-skills. It costs 99 tokens per session (1,583 once invoked), scanned A, original, MIT.

A workflow for carrying out a multi-step software project from an epic plan, using a separate worktree and pull request for each phase.

In plain words
What is it for?
Use it to ship an epic phase by phase, verifying and merging each part before continuing to the next.
Why use it?
It keeps dependent phases moving through implementation, checks, merging, and cleanup without stopping after every routine phase.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents.

Good fit Use it to ship an epic phase by phase, verifying and merging each part before continuing to the next.

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

Made for: Claude Code, Codex.

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 epic-ship

README.md
[![agentmods](https://agentmods.dev/badge/skills/davidtheproduct/claude-ship-skills/epic-ship/github.svg)](https://agentmods.dev/skills/davidtheproduct/claude-ship-skills/epic-ship)
Your own site
<a href="https://agentmods.dev/skills/davidtheproduct/claude-ship-skills/epic-ship"><img src="https://agentmods.dev/badge/skills/davidtheproduct/claude-ship-skills/epic-ship/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 epic-ship

Your own site · 80×15
<a href="https://agentmods.dev/skills/davidtheproduct/claude-ship-skills/epic-ship"><img src="https://agentmods.dev/badge/skills/davidtheproduct/claude-ship-skills/epic-ship.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 99 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,583 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 $0.00099 $0.01583
Opus 5 $0.00049 $0.00792
Sonnet 5 $0.00020 $0.00317
Haiku 4.5 $0.00010 $0.00158

Measured 11d ago against content hash be5c57be3323, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

epic-ship 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 11d 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/epic-ship/SKILL.md · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Epic Ship

Runs a multi-phase epic (a markdown plan doc with a phase list, e.g. docs/epics/epic-<n>.md) phase by phase, calling the ship-pr skill once per phase for the actual worktree/implement/verify/PR/merge/cleanup mechanics, until every phase is shipped or you hit an explicit review checkpoint. This is the sequential composition operator of the ship stack: parallel-ship fans out when changes are independent; this skill loops when phase N+1 builds on phase N's code.

The default failure mode this skill exists to fix is stalling after a routine merge waiting to be told to continue. ship-pr ships one PR and stops - epic-ship is what decides to call it again immediately.

Step 0: Reconcile against reality first

Before touching anything:

  1. git status and git branch --show-current at the repo root - confirm it's on the default branch and clean. If not clean and the changes aren't yours, stop and tell the user.
  2. git worktree list - confirm no stray worktree already covers this epic's phases.
  3. Read the epic doc fully: phase list, current status column, and any explicit checkpoint markers (see Step 3).
  4. gh pr list --search "<epic keyword>" --state all and git log --oneline -20 - confirm what's actually already merged before trusting the epic doc's status table. Epic docs drift; git and GitHub are the source of truth. This step exists because past sessions have reported phases as unshipped when they'd already landed, or vice versa - always reconcile before planning work.

Step 1: Plan the run

List the unshipped phases in order. For each, note what it touches (which packages/apps - and which specialized subagent fits, if the project defines any) and whether it's DB/migration work (regenerate types afterward if the project has a typegen step).

Then re-order for risk, not just dependency

Epic docs number phases in dependency order (DB -> backend -> frontend). That is not always a safe merge order. Before shipping anything, ask of each phase:

Read the full file on GitHub · 85 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. 11d ago First seen · 85 lines · 99 tokens per session scan A be5c57be3323

Subscribe to this mod's changes

epic-ship is a skill published in the GitHub repository davidtheproduct/claude-ship-skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 99 tokens to every session and 1,583 once invoked, about $0.0005 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.