GS

gsd-new-milestone

Start and manage milestone-based project cycles efficiently.

Install

mkdir -p .claude/skills/gsd-new-milestone && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/12550" && unzip -o skill.zip -d .claude/skills/gsd-new-milestone && rm skill.zip

Installs to .claude/skills/gsd-new-milestone

Activation

This is the description your AI agent reads to decide when to run this skill — the better it matches your request, the more reliably it fires.

Start a new milestone cycle — update PROJECT.md and route to requirements
73 charsno explicit “when” trigger
Intermediate

Key capabilities

  • Update `.planning/PROJECT.md` with new milestone goals.
  • Gather 'what's next' for an existing project.
  • Create optional domain research files for new features.
  • Scope requirements for the current milestone in `.planning/REQUIREMENTS.md`.
  • Update the phase structure in `.planning/ROADMAP.md`.
  • Reset `.planning/STATE.md` for a new milestone.

How it works

The skill executes a new-milestone workflow that involves questioning, optional research, requirements gathering, and roadmap creation, updating relevant project documentation files.

Inputs & outputs

You give it
An optional milestone name as `{{GSD_ARGS}}`.
You get back
Updated project documentation, including `PROJECT.md`, `REQUIREMENTS.md`, and `ROADMAP.md`, with a new milestone initiated.

When to use gsd-new-milestone

  • Starting a new sprint
  • Updating project roadmaps
  • Routing milestone requirements

About this skill

<codex_skill_adapter>

A. Skill Invocation

  • This skill is invoked by mentioning $gsd-new-milestone.
  • Treat all user text after $gsd-new-milestone as {{GSD_ARGS}}.
  • If no arguments are present, treat {{GSD_ARGS}} as empty.

B. AskUserQuestion → request_user_input Mapping

GSD workflows use AskUserQuestion (Claude Code syntax). Translate to Codex request_user_input:

Parameter mapping:

  • headerheader
  • questionquestion
  • Options formatted as "Label" — description{label: "Label", description: "description"}
  • Generate id from header: lowercase, replace spaces with underscores

Batched calls:

  • AskUserQuestion([q1, q2]) → single request_user_input with multiple entries in questions[]

Multi-select workaround:

  • Codex has no multiSelect. Use sequential single-selects, or present a numbered freeform list asking the user to enter comma-separated numbers.

Execute mode fallback:

  • When request_user_input is rejected (Execute mode), present a plain-text numbered list and pick a reasonable default.

C. Task() → spawn_agent Mapping

GSD workflows use Task(...) (Claude Code syntax). Translate to Codex collaboration tools:

Direct mapping:

  • Task(subagent_type="X", prompt="Y")spawn_agent(agent_type="X", message="Y")
  • Task(model="...") → omit (Codex uses per-role config, not inline model selection)
  • fork_context: false by default — GSD agents load their own context via <files_to_read> blocks

Parallel fan-out:

  • Spawn multiple agents → collect agent IDs → wait(ids) for all to complete

Result parsing:

  • Look for structured markers in agent output: CHECKPOINT, PLAN COMPLETE, SUMMARY, etc.
  • close_agent(id) after collecting results from each agent </codex_skill_adapter>
<objective> Start a new milestone: questioning → research (optional) → requirements → roadmap.

Brownfield equivalent of new-project. Project exists, PROJECT.md has history. Gathers "what's next", updates PROJECT.md, then runs requirements → roadmap cycle.

Creates/Updates:

  • .planning/PROJECT.md — updated with new milestone goals
  • .planning/research/ — domain research (optional, NEW features only)
  • .planning/REQUIREMENTS.md — scoped requirements for this milestone
  • .planning/ROADMAP.md — phase structure (continues numbering)
  • .planning/STATE.md — reset for new milestone

After: $gsd-plan-phase [N] to start execution. </objective>

<execution_context> @/Users/gabrielwillen/VSCode/stateforward/emel/emel.cpp/.codex/get-shit-done/workflows/new-milestone.md @/Users/gabrielwillen/VSCode/stateforward/emel/emel.cpp/.codex/get-shit-done/references/questioning.md @/Users/gabrielwillen/VSCode/stateforward/emel/emel.cpp/.codex/get-shit-done/references/ui-brand.md @/Users/gabrielwillen/VSCode/stateforward/emel/emel.cpp/.codex/get-shit-done/templates/project.md @/Users/gabrielwillen/VSCode/stateforward/emel/emel.cpp/.codex/get-shit-done/templates/requirements.md </execution_context>

<context> Milestone name: {{GSD_ARGS}} (optional - will prompt if not provided)

Project and milestone context files are resolved inside the workflow (init new-milestone) and delegated via <files_to_read> blocks where subagents are used. </context>

<process> Execute the new-milestone workflow from @/Users/gabrielwillen/VSCode/stateforward/emel/emel.cpp/.codex/get-shit-done/workflows/new-milestone.md end-to-end. Preserve all workflow gates (validation, questioning, research, requirements, roadmap approval, commits). </process>

When not to use it

  • When starting a completely new project.
  • When the user wants to start execution of a phase.
  • When the user wants to select a model for a task.

Limitations

  • It does not create new projects.
  • It does not start phase execution.
  • It requires user input for ambiguous phase scope.

How it compares

This skill automates the structured initiation of a new milestone within an existing project, ensuring all relevant documentation is updated and aligned, unlike a manual process that might miss steps.

Compared to similar skills

gsd-new-milestone side by side with the closest alternatives in the catalog.

SkillInstallsUpdatedSafetyDifficulty
gsd-new-milestone (this skill)03moNo flagsIntermediate
planning-with-files2336moReviewIntermediate
trello412moReviewBeginner
pmbok-project-management389moNo flagsIntermediate

Try saying

Example prompts that trigger this skill in your AI assistant.

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