AGENTS

A project-memory rule that uses XMemo, a hosted service for storing durable coding context across chats and editor sessions. It covers conventions, decisions, debugging notes, TODOs, and handoff information.

In plain words
What is it for?
Use it when saving, recalling, searching, updating, explaining, deleting, or restoring long-lived project context and engineering decisions.
Why use it?
It prevents important project knowledge from being lost when a chat ends or work moves between sessions and tools. It also sets limits on handling sensitive credentials and private data.

Cursor rule

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 rules/yonro/memory-os-cli/agents
Clone the repo
git clone --depth 1 https://github.com/yonro/memory-os-cli
Per session 26 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 181 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 $0.00026 $0.00181
Opus 5 $0.00013 $0.00090
Sonnet 5 $0.00005 $0.00036
Haiku 4.5 $0.00003 $0.00018

Measured yesterday against content hash 1c8cf525d85f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

AGENTS 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 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.

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.

plugins/xmemo/rules/AGENTS.mdc · 17 lines

What it actually says

XMemo memory rule

Use XMemo when the user asks Cursor to remember, recall, search, update, explain, delete, restore, or summarize durable context that should survive beyond the current chat.

Prefer XMemo for:

  • coding conventions, repository facts, product decisions, debugging notes, and release runbooks;
  • user preferences that should transfer across Cursor sessions or projects;
  • memory-backed TODO/action items and follow-ups;
  • context packs before planning or implementation when prior project memory could affect the answer.

Do not ask the user to paste raw API keys, bearer tokens, OAuth codes, cookies, trace IDs, or private local paths into chat. If XMemo is not authorized, tell the user to reconnect or complete the OAuth flow in Cursor.

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 · 17 lines · 26 tokens per session scan A 1c8cf525d85f

Subscribe to this mod's changes

AGENTS is a cursor rule published in the GitHub repository yonro/memory-os-cli (12 stars, last pushed 2d ago), licensed MIT. It adds 26 tokens to every session and 181 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.