name	executing-milestones
description	Use when you have an approved milestones plan (typically from planning-milestones) and are ready to implement the feature one milestone at a time, with Codex doing implementation and the main thread orchestrating, planning, and reviewing scope.

Executing Milestones

Overview

Iterate through a milestones plan. Each milestone follows: plan (opus) → branch → Codex implements → Codex reviews and fixes its own work → opus reviews and fixes scope/quality → user gate. Branches stack: milestone N branches off milestone N-1.

Announce at start: "I'm using the executing-milestones skill to implement ."

When to Use

A milestones plan exists at docs/superpowers/milestones/<file>
You want a structured per-milestone loop with explicit review gates
You want Codex doing the bulk of implementation while the main thread owns planning, scope, and final review

Don't use when:

No milestones plan exists → use planning-milestones first
Single-milestone work → use superpowers:writing-plans + superpowers:subagent-driven-development directly

Setup

Read the milestones plan end to end
Detect current state — for each milestone, check git branch --list feature/<slug>-milestone-N and inspect recent commits
Pick the first incomplete milestone as the resume point
Use TaskCreate to add one todo per remaining milestone
Confirm the starting milestone with the user before running step 1

The Per-Milestone Loop

For each milestone, in order:

Step 1: Plan (opus)

Announce: "Planning milestone N: "
Pull the milestone's definition (goal, in scope, out of scope, deliverables, dependencies, success criteria) from the milestones doc
REQUIRED SUB-SKILL: Use superpowers:writing-plans with that milestone definition as input
Write the plan to docs/superpowers/plans/YYYY-MM-DD-milestone-N-<slug>.md

Step 2: Create the branch

Verify working tree is clean: git status --short. If dirty, halt and ask the user.
Determine parent: milestone N-1's branch if N>1, otherwise the base branch (main/master).
Create and switch: git checkout -b feature/<slug>-milestone-N <parent>
Announce the new branch name.

Never start implementation on main/master.

Step 3: Codex implements

Dispatch:

Agent({
  subagent_type: "codex:codex-rescue",
  description: "Codex implements milestone N",
  prompt: "Implement the plan at docs/superpowers/plans/<plan-file> end to end. The plan is the source of truth — follow it step by step. Stay within the plan's scope; do not refactor unrelated code. Run the verification commands specified in the plan and report their results. If a step is blocked or the plan is wrong, stop and explain — do not improvise."
})

The rescue subagent defaults to --write. Leave --model unset. Wait for completion.

Step 4: Codex reviews and fixes its own work

Dispatch a follow-up on the same Codex thread using --resume:

Agent({
  subagent_type: "codex:codex-rescue",
  description: "Codex reviews and fixes its own work",
  prompt: "--resume Review your own implementation against the plan at docs/superpowers/plans/<plan-file>. Find deviations, missed steps, broken verifications, and quality issues. Fix what you find. Report what you changed and why in a short summary."
})

Step 5: Opus reviews and fixes

The main thread reviews now. Inspect the full diff (git diff <parent>...HEAD) and check:

Scope drift — anything beyond the plan or the milestone's in-scope list? Strip it out.
Plan coverage — every step of the plan represented in the diff?
Spec adherence — does the work match the milestone's success criteria from the milestones doc?
Code quality — naming, complexity, missing edge cases, dead code, unsafe patterns
Verifications — re-run the milestone's success criteria yourself; do not trust Codex's self-report

Fix issues directly with Read/Edit/Write/Bash. Only delegate back to Codex if the fix is large enough to need it.

Step 6: Verify

Run every verification command listed in the milestone's success criteria (tests, lint, type-check, manual checks). All must pass before commit. If verification fails, fix it — do not commit broken work.

Step 7: Commit

git add <specific files>
git commit -m "Milestone N: <name>"

Stage specific files. Do not use git add . or git add -A — risks pulling in untracked files.

Step 8: User gate

Present a summary in this shape:

Milestone N: <name> — COMPLETE
Branch: feature/<slug>-milestone-N (off <parent>)
Commits: <short list>
Verifications: <status>
Notable changes: <one or two lines>

Proceed to milestone N+1, revise this milestone, or stop?

Wait for the user's decision. Do not auto-continue. Mark the TodoWrite item complete only after the user chooses "proceed" or "stop".

After All Milestones

REQUIRED SUB-SKILL: Use superpowers:finishing-a-development-branch to decide merge/PR/cleanup for the full stack

Stop Conditions

Halt immediately and ask the user when:

Working tree is dirty at the branch step
Codex returns nothing or errors
Verifications fail and the cause is not obvious
The plan and the source milestone definition disagree
The user says "stop" or "revise" at any gate

Do not retry-loop through failures. Diagnose, then ask.

Resume Behavior

If invoked again mid-feature:

Re-read the milestones plan
For each milestone, check git branch --list feature/<slug>-milestone-N
The first milestone without a branch — or with a branch but no commit corresponding to its plan — is the resume point
Confirm the resume point with the user before running step 1

Quick Reference

Step	Owner	Tool
Plan	opus	`superpowers:writing-plans`
Branch	opus	Bash (`git checkout -b`)
Implement	codex	`Agent(codex:codex-rescue)`
Codex review + fix	codex	`Agent(codex:codex-rescue)` with `--resume`
Opus review + fix	opus	Read / Edit / Bash
Verify	opus	Bash
Commit	opus	Bash (`git commit`)
Gate	opus	message to user

Common Mistakes

Skipping the opus review — Codex's self-review misses scope drift; opus catching it is the whole point of the second pass
Auto-continuing past gates — the pause is a feature; if the user wants autonomous, they will say so
git add . at commit step — risks pulling in untracked files; stage explicitly
Branching off main when there is a prior milestone — breaks the stack; milestone N branches off milestone N-1
Letting Codex refactor "while it is in there" — strip out anything not in the plan during the opus review
Trusting Codex's verification report without re-running — re-run success criteria yourself in step 6

Integration

Input from: planning-milestones (provides the milestones doc)
Per-milestone sub-skill: superpowers:writing-plans (used in step 1 of each milestone)
Completion: superpowers:finishing-a-development-branch (after the final milestone)

name	executing-milestones
description	Use when you have an approved milestones plan (typically from planning-milestones) and are ready to implement the feature one milestone at a time, with Codex doing implementation and the main thread orchestrating, planning, and reviewing scope.