gsd-complete-milestone

gsd-complete-milestone is a skill for Claude Code from open-gsd/gsd-core. It costs 16 tokens per session (1,209 once invoked), scanned A, original, MIT.

A workflow for closing a completed project milestone, meaning a shipped version or major delivery point. It archives the milestone records, updates the project file, and creates a Git tag.

In plain words
What is it for?
Use it after a milestone is complete to archive its roadmap and requirements and prepare the project for the next milestone.
Why use it?
It checks whether the milestone was audited and whether any gaps remain before archiving its planning files.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: reads .claude/ paths.

Part of the gsd-core plugin — 72 skills, 35 agents, 7 hooks shipped together

Good fit Use it after a milestone is complete to archive its roadmap and requirements and prepare the project for the next milestone.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/open-gsd/gsd-core/gsd-complete-milestone
About the project

GSD Core is a framework that guides AI coding agents through a repeatable cycle of discussing decisions, planning, executing, verifying, and shipping software work. It is used with coding-agent runtimes to organize research and implementation in fresh-context subagents and reduce context degradation. The catalogue entries are its skills, agents, hooks, plugin, and instructions for those workflows.

open-gsd/gsd-core · 9,217 stars · on GitHub · opengsd.net

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 open-gsd/gsd-core --skill gsd-complete-milestone
Clone the repo
git clone --depth 1 https://github.com/open-gsd/gsd-core

Made for: Claude Code.

Or install gsd-core, the plugin that ships this one along with the rest of its 72 skills, 35 agents, 7 hooks.

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 gsd-complete-milestone

README.md
[![agentmods](https://agentmods.dev/badge/skills/open-gsd/gsd-core/gsd-complete-milestone/github.svg)](https://agentmods.dev/skills/open-gsd/gsd-core/gsd-complete-milestone)
Your own site
<a href="https://agentmods.dev/skills/open-gsd/gsd-core/gsd-complete-milestone"><img src="https://agentmods.dev/badge/skills/open-gsd/gsd-core/gsd-complete-milestone/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 gsd-complete-milestone

Your own site · 80×15
<a href="https://agentmods.dev/skills/open-gsd/gsd-core/gsd-complete-milestone"><img src="https://agentmods.dev/badge/skills/open-gsd/gsd-core/gsd-complete-milestone.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,209 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Rogue Agent · line 7
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
How audits are shown
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 $0.00016 $0.01209
Opus 5 $0.00008 $0.00605
Sonnet 5 $0.00003 $0.00242
Haiku 4.5 $0.00002 $0.00121

Measured 2d ago against content hash 9309e79460af, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

gsd-complete-milestone 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 2d 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.

Origin

Copies of this mod

3 near-identical copies found in the catalogue:

skills/gsd-complete-milestone/SKILL.md · 144 lines

How it starts

The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Purpose: Create historical record of shipped version, archive milestone artifacts (roadmap + requirements), and prepare for next milestone. Output: Milestone archived (roadmap + requirements), PROJECT.md evolved, git tagged.

<execution_context> Load these files NOW (before proceeding):

  • @~/.claude/gsd-core/workflows/complete-milestone.md (main workflow)
  • @~/.claude/gsd-core/templates/milestone-archive.md (archive template) </execution_context>

User input:

  • Version: {{version}} (e.g., "1.0", "1.1", "2.0")

Follow complete-milestone.md workflow:

  1. Check for audit:

    • Look for .planning/v{{version}}-MILESTONE-AUDIT.md
    • If missing or stale: recommend /gsd-audit-milestone first
    • If audit status is gaps_found: recommend closing the gaps inline (the audit output already enumerates them — insert closure phases via /gsd-phase --insert <N> plus the standard discuss/plan/execute chain) before proceeding.
    • If audit status is passed: proceed to step 1
    ## Pre-flight Check
    
    {If no v{{version}}-MILESTONE-AUDIT.md:}
    ⚠ No milestone audit found. Run `/gsd-audit-milestone` first to verify
    requirements coverage, cross-phase integration, and E2E flows.
    
    {If audit has gaps:}
    ⚠ Milestone audit found gaps. The audit output already enumerates the
    unsatisfied requirements, cross-phase issues, and broken flows — insert
    a closure phase per gap with `/gsd-phase --insert <N>` and run the
    standard `/gsd-discuss-phase` → `/gsd-plan-phase` → `/gsd-execute-phase`
    chain. Or proceed anyway to accept the gaps as tech debt.
    
    {If audit passed:}
    ✓ Milestone audit passed. Proceeding with completion.
    
  2. Verify readiness:

    • Check all phases in milestone have completed plans (SUMMARY.md exists)
    • Present milestone scope and stats
    • Wait for confirmation
  3. Gather stats:

    • Count phases, plans, tasks
    • Calculate git range, file changes, LOC
    • Extract timeline from git log
    • Present summary, confirm
  4. Extract accomplishments:

    • Read all phase SUMMARY.md files in milestone range
    • Extract 4-6 key accomplishments
    • Present for approval
  5. Archive milestone:

    • Create .planning/milestones/v{{version}}-ROADMAP.md
    • Extract full phase details from ROADMAP.md
    • Fill milestone-archive.md template
    • Update ROADMAP.md to one-line summary with link
  6. Archive requirements:

    • Create .planning/milestones/v{{version}}-REQUIREMENTS.md
    • Mark all v1 requirements as complete (checkboxes checked)
    • Note requirement outcomes (validated, adjusted, dropped)
    • Delete .planning/REQUIREMENTS.md (fresh one created for next milestone)
  7. Update PROJECT.md:

    • Add "Current State" section with shipped version
    • Add "Next Milestone Goals" section
    • Archive previous content in <details> (if v1.1+)
  8. Commit and tag:

    • Stage: MILESTONES.md, PROJECT.md, ROADMAP.md, STATE.md, archive files
    • Commit: chore: archive v{{version}} milestone
    • Tag: git tag -a v{{version}} -m "[milestone summary]"
    • Ask about pushing tag
  9. Offer next steps:

    • /gsd-new-milestone — start next milestone (questioning → research → requirements → roadmap)

<success_criteria>

  • Milestone archived to .planning/milestones/v{{version}}-ROADMAP.md
  • Requirements archived to .planning/milestones/v{{version}}-REQUIREMENTS.md
  • .planning/REQUIREMENTS.md deleted (fresh for next milestone)
  • ROADMAP.md collapsed to one-line entry
  • PROJECT.md updated with current state
  • Git tag v{{version}} created (if git.create_tag enabled)
  • Commit successful
  • User knows next steps (including need for fresh requirements) </success_criteria>

Read the full file on GitHub · 144 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. 2d ago Changed · +1 lines 9309e79460af
  2. 9d ago First seen · 143 lines · 16 tokens per session scan A d7f6202222d1

Subscribe to this mod's changes

gsd-complete-milestone is a skill published in the GitHub repository open-gsd/gsd-core (9,217 stars, last pushed yesterday), licensed MIT. It adds 16 tokens to every session and 1,209 once invoked, about $0.0001 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 2026-08-30.

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