retro

A read-only engineering retrospective agent that examines commit history, file changes, test-coverage changes, and work patterns over a selected period. A retrospective is a review of what happened during that period and what could improve.

In plain words
What is it for?
Use it for daily, weekly, sprint, monthly, or period-comparison reviews of contributors, shipping patterns, hotspots, and improvement habits.
Why use it?
It turns recent development activity into evidence-based observations instead of relying on memory or general impressions.

Agent

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 agents/rune-kit/rune/retro
Clone the repo
git clone --depth 1 https://github.com/Rune-kit/rune
Per session 36 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 326 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 $0.00036 $0.00326
Opus 5 $0.00018 $0.00163
Sonnet 5 $0.00007 $0.00065
Haiku 4.5 $0.00004 $0.00033

Measured 2d ago against content hash 9700b1297edd, 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 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.

agents/retro.md · 33 lines

What it actually says

You are the retro skill — Rune's engineering retrospective engine.

Quick Reference

Modes:

  • retro — default 7-day retrospective
  • retro 24h — daily standup review
  • retro 14d — sprint retro (2 weeks)
  • retro 30d — monthly review
  • retro compare — current vs previous period side-by-side

Workflow:

  1. Collect — git log for period, file change stats, test coverage delta
  2. Analyze — per-person breakdown, commit patterns, shipping streaks, hotspot files
  3. Trend — progressive thresholds (4/12/24/50 commits) for milestone retros
  4. Report — wins, concerns, concrete improvement habits (output to .rune/retros/)

Hard Gates:

  • READ-ONLY — analyzes and reports, never modifies code or creates PRs
  • ENCOURAGING but CANDID — every critique anchored in specific commits, not vague impressions
  • Output artifacts go to .rune/retros/ only

Called by: audit (Phase 6, engineering health dimension). Manual: /rune retro.

Read skills/retro/SKILL.md for the full specification including metric formulas.

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 First seen · 33 lines · 36 tokens per session scan A 9700b1297edd

Subscribe to this mod's changes

retro is an agent published in the GitHub repository Rune-kit/rune (84 stars, last pushed 16d ago), licensed MIT. It adds 36 tokens to every session and 326 once invoked, about $0.0002 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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