retro

retro is a skill for Claude Code, Codex from drag88/claude-dev-framework. It costs 21 tokens per session (1,990 once invoked), scanned A, original, MIT.

A reporting tool that reads Git history—the record of code changes—to summarize recent engineering work, patterns, and quality signals.

In plain words
What is it for?
Use it for weekly or custom-period engineering metrics, shipping-velocity checks, productivity reviews, and comparisons with an earlier period.
Why use it?
It gives a consistent view of how work is progressing without manually counting commits or comparing time periods.

Skill for Claude CodeCodex

Part of the cdf plugin — 13 skills, 20 commands, 11 agents, 4 hooks shipped together

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.

agentmods
npx agentmods add skills/drag88/claude-dev-framework/retro
Any agent
npx skills add drag88/claude-dev-framework --skill retro
Clone the repo
git clone --depth 1 https://github.com/drag88/claude-dev-framework

Made for: Claude Code, Codex.

Or install cdf, the plugin that ships this one along with the rest of its 13 skills, 20 commands, 11 agents, 4 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 retro

README.md
[![agentmods](https://agentmods.dev/badge/skills/drag88/claude-dev-framework/retro.svg)](https://agentmods.dev/skills/drag88/claude-dev-framework/retro)
Your own site
<a href="https://agentmods.dev/skills/drag88/claude-dev-framework/retro"><img src="https://agentmods.dev/badge/skills/drag88/claude-dev-framework/retro.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,990 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00021 $0.01990
Opus 5 $0.00010 $0.00995
Sonnet 5 $0.00004 $0.00398
Haiku 4.5 $0.00002 $0.00199

Measured 3d ago against content hash 8eb83a9fe8f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

retro 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 3d 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.

skills/retro/SKILL.md · 234 lines

How it starts

The opening of the file, as written. The whole thing — 234 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/retro — Engineering Retrospective

Generates a comprehensive engineering retrospective from git history. Surfaces velocity, patterns, and quality signals that are invisible in day-to-day work.

When to Activate

  • User types /retro
  • User asks for "weekly metrics", "engineering stats", "how productive was I", "shipping velocity"

Arguments

  • /retro — default: last 7 days
  • /retro 24h — last 24 hours
  • /retro 14d — last 14 days
  • /retro 30d — last 30 days
  • /retro compare — compare current window vs prior same-length window
  • /retro compare 14d — compare with explicit window

Validate argument format: number + d/h/w, or compare optionally followed by window. If invalid, show usage and stop.

Instructions

Step 1: Gather Raw Data

Fetch origin first, then run the remaining git commands.

git fetch origin --quiet

# 1. Commits with stats
git log origin/main --since="<window>" --format="%H|%ai|%s" --shortstat

# 2. Per-commit test vs production LOC (test/|spec/|__tests__/ = test files)
git log origin/main --since="<window>" --format="COMMIT:%H" --numstat

# 3. Timestamps for session detection
git log origin/main --since="<window>" --format="%at|%ai|%s" | sort -n

# 4. Hotspot analysis
git log origin/main --since="<window>" --format="" --name-only | grep -v '^$' | sort | uniq -c | sort -rn

# 5. PR numbers from commit messages
git log origin/main --since="<window>" --format="%s" | grep -oE '#[0-9]+' | sed 's/^#//' | sort -n | uniq | sed 's/^/#/'

Step 2: Compute Metrics

Present as summary table:

Metric Value
Commits to main N
PRs merged N
Total insertions N
Total deletions N
Net LOC added N
Test LOC (insertions) N
Test LOC ratio N%
Active days N
Detected sessions N
Avg LOC/session-hour N

Step 3: Commit Time Distribution

Hourly histogram with bar chart:

Hour  Commits  ████████████████
 00:    4      ████
 07:    5      █████

Read the full file on GitHub · 234 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. 3d ago First seen · 234 lines · 21 tokens per session scan A 8eb83a9fe8f3

Subscribe to this mod's changes

retro is a skill published in the GitHub repository drag88/claude-dev-framework (2 stars, last pushed 1mo ago), licensed MIT. It adds 21 tokens to every session and 1,990 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 2026-08-31.

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