retro

retro is a skill for Claude Code from eigenlegal/counsel-os. It costs 60 tokens per session (3,127 once invoked), scanned A, original, MIT.

A legal-practice review skill that studies past matters and stored knowledge to find trends, improve working positions, and preserve useful deal or clause guidance. A matter is a legal case or transaction being handled.

In plain words
What is it for?
Use it quarterly or after about ten closed matters to review counterparties, recurring deal patterns, clause outcomes, exceptions, and practice knowledge.
Why use it?
It helps turn scattered case records into reusable knowledge and avoids treating small, varied samples as meaningful statistics.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions Claude Code.

Part of the counsel-os plugin — 9 skills shipped together

Good fit Use it quarterly or after about ten closed matters to review counterparties, recurring deal patterns, clause outcomes, exceptions, and practice knowledge.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/eigenlegal/counsel-os/retro
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 eigenlegal/counsel-os --skill retro
Clone the repo
git clone --depth 1 https://github.com/eigenlegal/counsel-os

Made for: Claude Code.

Or install counsel-os, the plugin that ships this one along with the rest of its 9 skills.

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/eigenlegal/counsel-os/retro/github.svg)](https://agentmods.dev/skills/eigenlegal/counsel-os/retro)
Your own site
<a href="https://agentmods.dev/skills/eigenlegal/counsel-os/retro"><img src="https://agentmods.dev/badge/skills/eigenlegal/counsel-os/retro/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 retro

Your own site · 80×15
<a href="https://agentmods.dev/skills/eigenlegal/counsel-os/retro"><img src="https://agentmods.dev/badge/skills/eigenlegal/counsel-os/retro.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,127 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 Agent Snooping · line 24
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 $0.00060 $0.03127
Opus 5 $0.00030 $0.01563
Sonnet 5 $0.00012 $0.00625
Haiku 4.5 $0.00006 $0.00313

Measured 8d ago against content hash a165e57a3261, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, 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 8d 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 · 287 lines

How it starts

The opening of the file, as written. The whole thing — 287 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Retro — Practice Analytics

The counsel-os runtime runs this same retro without Claude Code: bun runtime/src/cli.ts retro, the "run a retro" line on Home when one is due, or Settings › Runtime › Run a retro. It opens a retro thread whose steps carry this method plus the runtime's own record of the period (conversations, steps, runs and cost, proposals and their decisions, documents produced, matters touched, memory, doctor); every write below comes back as a proposal there. Cadence: retro_cadence_days in config.md (default 90).

You are running a retrospective analysis of the user's legal practice. Your job is to analyze accumulated data in the memory and matters files, identify trends, and recommend improvements to positions, processes, and priorities.

When to use: Run quarterly, or every ~10 closed matters, or when the user wants insight into their practice patterns.

Calibrate to the practice's shape before analyzing. Two archetypes:

  • High-volume, homogeneous (many similar contracts against the same positions): the statistical steps (3 and 5 — position effectiveness, exception rates) are meaningful. Run everything.
  • Low-volume, heterogeneous (most solo/in-house practices: few matters, each structurally different): per-clause statistics are noise at n < ~10 per clause type. SKIP the statistical analysis in Steps 3 and 5 — treat deviations as individual case notes instead of trends — and make Step 6 (Harvest) the centerpiece. In these practices the durable knowledge is rarely clause-generic; it's deal-archetype and regulatory-posture knowledge (e.g., "how pay-ins work in jurisdiction X via partner Y"), which belongs in promoted playbooks, not position files.

State which mode you're running and why at the top of the report.

Step 0: Resolve Paths

Resolve {legal_root} via the Finding the Legal Root procedure in skills/counsel/SKILL.md.

  • Legal root ({legal_root}) — contains law/, practice/, matters/, memory/
  • Entity discovery — enumerate and look up entity/matter files using the Knowledge Base Search procedure in counsel/SKILL.md

Read the full file on GitHub · 287 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. 8d ago Changed · +2 lines a165e57a3261
  2. 11d ago First seen · 285 lines · 60 tokens per session scan A 57644d7dfd47

Subscribe to this mod's changes

retro is a skill published in the GitHub repository eigenlegal/counsel-os (24 stars, last pushed today), licensed MIT. It adds 60 tokens to every session and 3,127 once invoked, about $0.0003 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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