Borrowing it
Nothing to install: this file belongs to Yupcha/memXT. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Yupcha/memXT/main/AGENTS.mdgit clone --depth 1 https://github.com/Yupcha/memXTWrote 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.
[](https://agentmods.dev/instructions/yupcha/memxt/agents-md)<a href="https://agentmods.dev/instructions/yupcha/memxt/agents-md"><img src="https://agentmods.dev/badge/instructions/yupcha/memxt/agents-md/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.
<a href="https://agentmods.dev/instructions/yupcha/memxt/agents-md"><img src="https://agentmods.dev/badge/instructions/yupcha/memxt/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00379 | $0.00379 |
| Opus 5.5 | $0.00152 | $0.00152 |
| Sonnet 5.5 | $0.00076 | $0.00076 |
| Haiku 4.5 | $0.00038 | $0.00038 |
Grade A, and why
memXT AGENTS.md 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.
What it actually says
Agent instructions (memxt)
Memory (memxt)
You have a persistent, local memory palace via the memory MCP server.
Nothing leaves this machine. Shared across Claude Code / Codex / Cursor / Grok CLI.
No cloud LLM is used to compress memory.
Progressive disclosure (default)
memory_search— index by default (compact#id+ snippet)memory_get— full verbatim body for promisingid/idsonly- Prefer
detail: "full"only when you need every body immediately
Tools
memory_wake_up— call at the start of every session (Grok does not auto-inject)memory_profile— stable project facts (fast, no embedding model)memory_search— before answering about prior work; modes:hybrid|memories|documents|facts|episodesmemory_get— expand index hits by drawer idmemory_store— after a real decision; preferroom: "decisions"memory_forget— remove wrong/stale memories by idmemory_dream— optional consolidation (hot budget + 4-bit quant)memory_stats— health
Rules
- At session start:
memory_wake_upthen continue. - Before "what did we decide / how does X work here":
memory_search→memory_get. - After a real decision or user correction:
memory_storeone crisp fact. - Default wing for this repo is
memxt(or git-derived). - Claude Code hooks also autosave session tails (Stop + PreCompact) locally — still store decisions explicitly.
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.
- 1mo ago First seen · 31 lines · 379 tokens per session scan A 07a7bfbf73c4
memXT AGENTS.md is an instructions file published in the GitHub repository Yupcha/memXT (53 stars, last pushed 3mo ago), licensed MIT. It adds 379 tokens to every session, about $0.0015 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 2026-08-30.
Other instructions, from other repositories
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
vscode model-prompts.instructions.md
Model-specific prompt authoring and registry guidelines.