memory-system

memory-system is a skill for Claude Code, Codex from phuonghx/aim-cli. It costs 86 tokens per session (1,439 once invoked), scanned A, original, MIT.

A file-based memory system for preserving user preferences, project conventions, and past decisions across coding-agent sessions.

In plain words
What is it for?
Use it when the agent should remember preferences, technical decisions, project rules, or feedback beyond the current session.
Why use it?
It prevents the agent from starting over or repeatedly asking for information that was already established.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when the agent should remember preferences, technical decisions, project rules, or feedback beyond the current session.

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Install with agentmods
npx agentmods add skills/phuonghx/aim-cli/memory-system
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 phuonghx/aim-cli --skill memory-system
Clone the repo
git clone --depth 1 https://github.com/phuonghx/aim-cli

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-system

README.md
[![agentmods](https://agentmods.dev/badge/skills/phuonghx/aim-cli/memory-system/github.svg)](https://agentmods.dev/skills/phuonghx/aim-cli/memory-system)
Your own site
<a href="https://agentmods.dev/skills/phuonghx/aim-cli/memory-system"><img src="https://agentmods.dev/badge/skills/phuonghx/aim-cli/memory-system/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 memory-system

Your own site · 80×15
<a href="https://agentmods.dev/skills/phuonghx/aim-cli/memory-system"><img src="https://agentmods.dev/badge/skills/phuonghx/aim-cli/memory-system.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 86 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,439 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.
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 $0.00086 $0.01439
Opus 5.5 $0.00034 $0.00576
Sonnet 5.5 $0.00017 $0.00288
Haiku 4.5 $0.00009 $0.00144

Measured 1mo ago against content hash 2e891c40c51d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

memory-system 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 1mo 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.

aim/templates/aim-agents/skills/memory-system/SKILL.md · 159 lines

How it starts

The opening of the file, as written. The whole thing — 159 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Memory System

Without memory, every session starts from zero — preferences re-explained, conventions re-discovered, decisions re-litigated. This skill fixes that by keeping a small, searchable record on disk. A short index points to detailed topic files, so the agent can pull back exactly what it needs.

The trade is favorable: loading the index costs roughly a thousand tokens, while skipping the re-discovery it replaces saves several thousand.

How It's Laid Out

.aim-agents/memory/
├── MEMORY.md                 ← the index — a thin set of pointers, ≤200 lines
├── user-preferences.md       ← who the user is: role, style, tooling
├── project-conventions.md    ← how this project does things
├── tech-decisions.md         ← architectural calls already made
├── feedback-history.md       ← what landed well or badly
└── <topic>.md                ← more topic files as the need arises

The Index File

MEMORY.md is a directory, not a database. Each line is a one-glance summary that names the topic file holding the full story.

Keep it disciplined:

  • Cap the whole file at 200 lines.
  • Hold each entry to about 150 characters.
  • Use the shape: - [type] summary → topic-file.md.
  • Stick to four tags: [user], [feedback], [project], [reference].

A worked example:

# Memory Index

## User
- [user] Works on macOS, lives in the terminal, prefers fish → user-preferences.md
- [user] Staff backend engineer, ~10 yrs in distributed systems → user-preferences.md
- [user] Writes in English; occasional German → user-preferences.md

## Project
- [project] pnpm only — never npm or yarn → project-conventions.md
- [project] React 19 with the compiler on → tech-decisions.md
- [project] Trunk-based; short-lived branches off main → project-conventions.md

## Feedback
- [feedback] Wants answers tight, no preamble → feedback-history.md
- [feedback] Finds long walkthroughs tedious → feedback-history.md
- [feedback] Reaches for tables over bullet lists → feedback-history.md

## Reference
- [reference] Staging gateway listens on 8443 → infrastructure-notes.md
- [reference] Release flow: tag, then CI promotes → project-conventions.md

Read the full file on GitHub · 159 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. 1mo ago First seen · 159 lines · 86 tokens per session scan A 2e891c40c51d

Subscribe to this mod's changes

memory-system is a skill published in the GitHub repository phuonghx/aim-cli (1 stars, last pushed 3mo ago), licensed MIT. It adds 86 tokens to every session and 1,439 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-08-31.

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