summarize-session

summarize-session is a skill for Claude Code, Codex from lbb00/ai-rules-sync. It costs 22 tokens per session (669 once invoked), scanned A, original, Unlicense.

A workflow for reviewing a coding session and turning reusable lessons into Claude Code rules, skills, or commands. These are files that guide future coding sessions or automate repeated actions.

In plain words
What is it for?
Use it to identify coding standards, recurring workflows, build or deployment commands, and other patterns worth saving for later.
Why use it?
It helps preserve useful decisions, fixes, and workflows after a session ends.

Skill for Claude CodeCodex

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/lbb00/ai-rules-sync/summarize-session
Any agent
npx skills add lbb00/ai-rules-sync --skill summarize-session
Clone the repo
git clone --depth 1 https://github.com/lbb00/ai-rules-sync

Made for: Claude Code, Codex.

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 summarize-session

README.md
[![agentmods](https://agentmods.dev/badge/skills/lbb00/ai-rules-sync/summarize-session.svg)](https://agentmods.dev/skills/lbb00/ai-rules-sync/summarize-session)
Your own site
<a href="https://agentmods.dev/skills/lbb00/ai-rules-sync/summarize-session"><img src="https://agentmods.dev/badge/skills/lbb00/ai-rules-sync/summarize-session.svg" alt="Measured on agentmods" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 669 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 $0.00022 $0.00669
Opus 5 $0.00011 $0.00334
Sonnet 5 $0.00004 $0.00134
Haiku 4.5 $0.00002 $0.00067

Measured 3d ago against content hash 69ca8d8a115b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

summarize-session 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.

.claude/skills/summarize-session/SKILL.md · 135 lines

How it starts

The opening of the file, as written. The whole thing — 135 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Summarize Session

Purpose

At the end of a productive coding session, analyze the conversation to extract reusable patterns and generate Claude Code artifacts (rules, skills, commands) that can accelerate future work.

Instructions

  1. Review Session Activity

    • What problems were solved?
    • What code was written or modified?
    • What workflows were performed?
    • What decisions were made and why?
  2. Identify Patterns

    Rules Candidates (coding standards, project conventions):

    • Repeated code style corrections
    • Error patterns that were fixed
    • Best practices established
    • Project-specific conventions

    Skills Candidates (multi-step workflows):

    • Complex operations performed multiple times
    • Sequences of commands that go together
    • Integration or deployment workflows
    • Testing or validation procedures

    Commands Candidates (single-action shortcuts):

    • Frequently used command combinations
    • Build/test/deploy shortcuts
    • Common git operations
    • Project-specific utilities
  3. Generate Artifacts

    For each identified pattern, create the appropriate artifact:

    Rules.claude/rules/<name>/RULE.md

    ---
    name: rule-name
    description: Brief description
    ---
    
    # Rule Name
    
    ## When to Apply
    ...
    
    ## Guidelines
    ...
    

    Skills.claude/skills/<name>/SKILL.md

    ---
    name: skill-name
    description: Brief description
    ---
    
    # Skill Name
    
    ## Instructions
    1. Step 1
    2. Step 2
    ...
    

    Commands.claude/commands/<name>.md

    # Command Name
    
    Description of what this command does.
    
    ## Steps
    1. ...
    2. ...
    
  4. Validate Artifacts

    • Ensure artifacts are general enough to be reusable
    • Remove session-specific details
    • Test that instructions are complete and actionable
  5. Document Session Summary

    • What was accomplished
    • What artifacts were generated
    • Recommendations for next session

Read the full file on GitHub · 135 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 · 135 lines · 22 tokens per session scan A 69ca8d8a115b

Subscribe to this mod's changes

summarize-session is a skill published in the GitHub repository lbb00/ai-rules-sync (37 stars, last pushed 14d ago), licensed Unlicense. It adds 22 tokens to every session and 669 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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