memory

memory is a skill for Claude Code, Codex from jasonkneen/lazar. It costs 0 tokens per session (430 once invoked), scanned A, original, MIT.

A note-taking system that saves plain Markdown files between Lazar runs. It lets the agent and the user read the stored notes directly.

In plain words
What is it for?
Use it to remember user preferences, project facts, recurring tasks, and breadcrumbs for future work.
Why use it?
It prevents useful facts, decisions, and reminders from being lost when 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/jasonkneen/lazar/memory
Any agent
npx skills add jasonkneen/lazar --skill memory
Clone the repo
git clone --depth 1 https://github.com/jasonkneen/lazar

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 memory

README.md
[![agentmods](https://agentmods.dev/badge/skills/jasonkneen/lazar/memory.svg)](https://agentmods.dev/skills/jasonkneen/lazar/memory)
Your own site
<a href="https://agentmods.dev/skills/jasonkneen/lazar/memory"><img src="https://agentmods.dev/badge/skills/jasonkneen/lazar/memory.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 430 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 $0.00000 $0.00430
Opus 5 $0.00000 $0.00215
Sonnet 5 $0.00000 $0.00086
Haiku 4.5 $0.00000 $0.00043

Measured 5d ago against content hash 7be37297542d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

memory 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.

src/seed-skills/memory/SKILL.md · 53 lines

What it actually says

memory

Durable notes that survive across lazar -p invocations. Memory lives in $LAZAR_HOME/memory/ and is plain markdown — no JSON, no encoded blobs. You and the user should be able to cat it and understand instantly.

When to use

  • The user asks you to remember something.
  • You learn a fact about the user, the system, or a recurring task that would be useful next session.
  • You want to leave breadcrumbs for a future invocation of yourself.
  • At the start of a non-trivial task, to load relevant prior context.

How to use

Read all memory at the start of a task

cat $LAZAR_HOME/memory/*.md 2>/dev/null || echo "(no memory yet)"

Append a timestamped note

mkdir -p $LAZAR_HOME/memory
cat >> $LAZAR_HOME/memory/notes.md <<EOF

## $(date -u +%Y-%m-%dT%H:%M:%SZ)
<the note in one or two sentences>
EOF

Write a topic-scoped note

For a topic you'll revisit, give it its own file:

cat > $LAZAR_HOME/memory/<topic>.md <<EOF
# <topic>

<facts and context>
EOF

Update an existing topic file

cat >> $LAZAR_HOME/memory/<topic>.md <<EOF

## update $(date -u +%Y-%m-%dT%H:%M:%SZ)
<new info>
EOF

Principles

  • Markdown only. Anything else defeats the point.
  • Prefer topic files over a single firehose notes.md once you have more than ~10 entries on a topic.
  • Don't write secrets or API keys to memory. The memory directory is not encrypted.
  • Memory survives lazar --reset-all? No — reset wipes it. If the user wants persistence across resets, they should copy memory/ elsewhere first.
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 · 53 lines · 0 tokens per session scan A 7be37297542d

Subscribe to this mod's changes

memory is a skill published in the GitHub repository jasonkneen/lazar (31 stars, last pushed 23d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 430 tokens. 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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