epic-dev

epic-dev is a command for Claude Code from neuromechanist/research-skills. It costs 17 tokens per session (2,891 once invoked), scanned A, original, BSD-3-Clause.

A workflow for delivering a large feature in stages using Git worktrees, GitHub issues, and pull requests. A Git worktree is a separate working folder connected to the same repository, so multiple branches can be developed at once.

In plain words
What is it for?
Use it to plan an epic, create linked GitHub issues and sub-issues, develop phases in separate worktrees, implement and review tasks with coding agents, and deliver the results through pull requests.
Why use it?
Large changes need planning, progress tracking, review, and controlled delivery. This workflow divides an epic into smaller tasks and phases, assigns implementation and review work, and pauses for approval at key points.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: names the AskUserQuestion tool.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the project plugin — 16 skills, 5 commands, 3 agents shipped together

Good fit Use it to plan an epic, create linked GitHub issues and sub-issues, develop phases in separate worktrees, implement and review tasks with coding agents, and deliver the results through pull requests.

Compare 6 commands from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add neuromechanist/research-skills
Claude Code
/plugin install project

Made for: Claude Code.

Or install project, the plugin that ships this one along with the rest of its 16 skills, 5 commands, 3 agents.

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-dev

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

Your own site · 80×15
<a href="https://agentmods.dev/commands/neuromechanist/research-skills/epic-dev"><img src="https://agentmods.dev/badge/commands/neuromechanist/research-skills/epic-dev.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,891 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 $0.00017 $0.02891
Opus 5.5 $0.00007 $0.01156
Sonnet 5.5 $0.00003 $0.00578
Haiku 4.5 $0.00002 $0.00289

Measured 8d ago against content hash 9a450f7028ad, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

epic-dev 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 8d 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/project/commands/epic-dev.md · 252 lines

How it starts

The opening of the file, as written. The whole thing — 252 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Epic Development Workflow

Orchestrate multi-phase feature development using git worktrees, GitHub issues with sub-issues, and phased PR delivery. Load the project:workflow-reference skill immediately for reference context.

Core Principles

  • Full automation: Execute all git, gh, and worktree commands automatically
  • Confirm only at strategic points: epic plan, implementation plan, an accepted Critical finding that cannot be fixed within the phase, final merge
  • Never stall: when blocked, follow project:engineering-loop references/unblock-rules.md; every wait has a limit and a next action
  • Use absolute paths: Bash calls do not persist cd; always use full worktree paths
  • Track progress: Use TodoWrite to track all phases and steps
  • No emojis: Never use emojis in commits, PRs, or issues
  • Model routing (per project:agent-fanout): a Sonnet (xhigh) driver orchestrates; named Sonnet (xhigh) agents implement, review, and validate; epic design, unresolved architecture, and high-risk invariants go to Opus (xhigh), or Fable when available.
  • GitHub prose: Semantic line breaks remain the prose-source default, but text posted to GitHub (issue and PR bodies, comments, reviews, and discussions) is the exception. Keep each paragraph and list item on one source line, separate paragraphs with blank lines, and do not insert sentence- or clause-level newlines within a paragraph.
  • Agent cleanup: After incorporating a final report, close/remove the one-off agent unless a concrete follow-up task is already assigned.

Phase 0: Repository Detection

Goal: Detect repo configuration and validate prerequisites.

Actions:

  1. Run ${CLAUDE_PLUGIN_ROOT}/bin/project-preflight --format json and parse the output. Keep the legacy project-detect-repo-config fallback for installations that predate the preflight binary.
  2. Validate all required values are present: integration_branch, repo_root, and current_branch must be non-empty. If any are missing or if ERROR is set, report the error to the user and stop.
  3. Validate gh only when a GitHub operation is about to run: require has_gh=true, then use gh_command_status, gh_network_status, gh_auth_status, and gh_token_status to give the repair-specific error. Do not report a generic unauthenticated state when the network or child-shell credential probe failed.
  4. If gh-sub-issue is needed and missing, install it: gh extension install agbiotech/gh-sub-issue
  5. Store detected values: integration_branch, repo_root, current_branch, native_agent_status, and native_agent_surface.
  6. Create initial todo list tracking all workflow phases

Read the full file on GitHub · 252 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. 8d ago Changed · +1 lines 9a450f7028ad
  2. 10d ago Changed · +3 lines 4c854da6745c
  3. 1mo ago Changed · +10 lines 5d535bfadc97
  4. 1mo ago Changed · +17 tokens per session 8a37982623f8
  5. 1mo ago First seen · 238 lines · 0 tokens per session scan A f558b41dbe7b

Subscribe to this mod's changes

epic-dev is a command published in the GitHub repository neuromechanist/research-skills (49 stars, last pushed yesterday), licensed BSD-3-Clause. It adds 17 tokens to every session and 2,891 once invoked, about $0.0001 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 2026-08-30.