milestone-summary

milestone-summary is a skill for Claude Code from SienkLogic/plan-build-run. It costs 19 tokens per session (612 once invoked), scanned A, original, MIT.

A tool for turning archived milestone records into a detailed summary for people joining a project or reviewing its history.

In plain words
What is it for?
Use it to summarize completed milestones, including their goals, decisions, delivered work, and remaining gaps.
Why use it?
It gathers scattered plans, implementation notes, and verification results into one navigable account.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the pbr plugin — 44 skills, 71 commands, 18 agents, 3 hooks shipped together

Good fit Use it to summarize completed milestones, including their goals, decisions, delivered work, and remaining gaps.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sienklogic/plan-build-run/milestone-summary
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 SienkLogic/plan-build-run --skill milestone-summary
Clone the repo
git clone --depth 1 https://github.com/SienkLogic/plan-build-run

Made for: Claude Code.

Or install pbr, the plugin that ships this one along with the rest of its 44 skills, 71 commands, 18 agents, 3 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 milestone-summary

README.md
[![agentmods](https://agentmods.dev/badge/skills/sienklogic/plan-build-run/milestone-summary/github.svg)](https://agentmods.dev/skills/sienklogic/plan-build-run/milestone-summary)
Your own site
<a href="https://agentmods.dev/skills/sienklogic/plan-build-run/milestone-summary"><img src="https://agentmods.dev/badge/skills/sienklogic/plan-build-run/milestone-summary/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 milestone-summary

Your own site · 80×15
<a href="https://agentmods.dev/skills/sienklogic/plan-build-run/milestone-summary"><img src="https://agentmods.dev/badge/skills/sienklogic/plan-build-run/milestone-summary.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 612 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 $0.00019 $0.00612
Opus 5 $0.00010 $0.00306
Sonnet 5 $0.00004 $0.00122
Haiku 4.5 $0.00002 $0.00061

Measured 5d ago against content hash 1f963f3ab534, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

milestone-summary 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 5d 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/pbr/skills/milestone-summary/SKILL.md · 87 lines

How it starts

The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.

STOP — DO NOT READ THIS FILE. You are already reading it.

/pbr:milestone-summary — Milestone Summary for Onboarding

Generate a comprehensive, navigable summary document from milestone artifacts. Useful for team onboarding and stakeholder review.

Step 0 — Banner

╔══════════════════════════════════════════════════════════════╗
║  PLAN-BUILD-RUN ► MILESTONE SUMMARY                          ║
╚══════════════════════════════════════════════════════════════╝

Step 1 — Determine Milestone

If $ARGUMENTS has a version: use it (auto-prefix v if missing). If empty: use the most recent completed milestone from ROADMAP.md.

Step 2 — Locate Archive

Check both formats:

  • Directory: .planning/milestones/v{X}/ (preferred)
  • Flat files: .planning/milestones/v{X}-*.md (legacy)

If not found, check if it's the current active milestone (not yet archived) — scan .planning/phases/ for the milestone's phase range.

Step 3 — Aggregate Artifacts

For each phase in the milestone:

  1. Read PLAN.md frontmatter: objectives, must_haves, implements
  2. Read SUMMARY.md: what was built, key decisions, deviations
  3. Read VERIFICATION.md: pass/fail status, gaps
  4. Compile into phase summary sections

Step 4 — Write Summary

Write to .planning/MILESTONE-SUMMARY.md (or .planning/milestones/v{X}/SUMMARY.md if archived):

# Milestone {version}: {name}

**Shipped:** {date}
**Phases:** {count}
**Commits:** {count}

## Overview
{2-3 sentence summary of what this milestone delivered}

## Phase Summaries

### Phase {N}: {name}
**Goal:** {from ROADMAP}
**Status:** {verified/partial}
**Key files:** {from SUMMARY key_files}
**Decisions:** {from SUMMARY key_decisions}

{repeat for each phase}

## Requirements Coverage
| REQ | Status | Phase |
|-----|--------|-------|

## Architecture Impact
{What changed in the system architecture across this milestone}

## Known Issues
{Deferred items, verification gaps, tech debt from this milestone}

Step 5 — Report

Read the full file on GitHub · 87 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. 5d ago First seen · 87 lines · 19 tokens per session scan A 1f963f3ab534

Subscribe to this mod's changes

milestone-summary is a skill published in the GitHub repository SienkLogic/plan-build-run (17 stars, last pushed 5mo ago), licensed MIT. It adds 19 tokens to every session and 612 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 2026-09-03.

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