memory.remember

A skill for recording lasting lessons, feature behaviour, and operating rules from a session in a project's memory and documentation files.

In plain words
What is it for?
Use it to update MEMORY.md and related repository documents, promote reusable principles into a skill, and refine DESIGN.md when that file exists.
Why use it?
It prevents useful project knowledge from being lost between sessions and can turn repeated principles into reusable guidance.

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/johnviklund/agent-skills/memory.remember
Any agent
npx skills add johnviklund/agent-skills --skill memory.remember
Clone the repo
git clone --depth 1 https://github.com/johnviklund/agent-skills

Made for: Claude Code, Codex.

Per session 136 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,336 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin unknown 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 $0.00136 $0.04336
Opus 5 $0.00068 $0.02168
Sonnet 5 $0.00027 $0.00867
Haiku 4.5 $0.00014 $0.00434

Measured yesterday against content hash db9d7f98b0ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

memory.remember scanned grade B with 1 finding 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 yesterday.

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.

Enumerates other installed skillsmediumAgent snooping

Other skills' SKILL.md files reveal prompts, capabilities and secrets that should be invisible to peers.

- **Also list every installed plugin's skill names** — e.g. `ls ~/.copilot/installed-plugins/*/*/skills/` and `~/.copilot/installed-plugins/_direct/*/skills/` (Copilot), and `ls ~/.codex/skills/` (Codex, which mirrors pl
.github/skills/memory.remember/SKILL.md · 222 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. yesterday First seen · 222 lines · 136 tokens per session scan B db9d7f98b0ff

Subscribe to this mod's changes

memory.remember is a skill published in the GitHub repository johnviklund/agent-skills (2 stars, last pushed 4d ago), with no licence file. It adds 136 tokens to every session and 4,336 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it B with 1 finding (enumerates other installed skills). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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