mem9 AGENTS.md

mem9 AGENTS.md is an instructions file for Codex, OpenCode from mem9-ai/mem9. It costs 3,034 tokens per session, scanned A, original, Apache-2.0.

A set of instructions for mnemos, a memory system for coding agents. It describes the Go web server, database-backed storage, agent integrations, command-line tool, website, and its relationship with a separate mem9-node repository.

In plain words
What is it for?
Understanding system architecture, tracing dashboard requests to backend services, and building or checking the Go server and connected components.
Why use it?
It helps an agent locate the right component when a task crosses the memory service, dashboard, or related backend repository.

Instructions file for CodexOpenCode

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 instructions/mem9-ai/mem9/agents-md
Clone the repo
git clone --depth 1 https://github.com/mem9-ai/mem9

Made for: Codex, OpenCode.

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 mem9 AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/mem9-ai/mem9/agents-md.svg)](https://agentmods.dev/instructions/mem9-ai/mem9/agents-md)
Your own site
<a href="https://agentmods.dev/instructions/mem9-ai/mem9/agents-md"><img src="https://agentmods.dev/badge/instructions/mem9-ai/mem9/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 3,034 This file is loaded in full into every session.
When invoked 3,034 The same file — it is already loaded in full.
Security scan A 2 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 $0.03034 $0.03034
Opus 5 $0.01517 $0.01517
Sonnet 5 $0.00607 $0.00607
Haiku 4.5 $0.00303 $0.00303

Measured 4d ago against content hash 12177ba456f2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mem9 AGENTS.md scanned grade A with 2 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 4d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- `curl` calls use explicit timeouts.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

python3 -c 'from pathlib import Path; import re, subprocess; text = Path("AGENTS.md").read_text(); paths = re.findall(r"`([^`]+/AGENTS\.md)`", text); tracked = set(subprocess.check_output(["git", "ls-files", "*AGENTS.md"
AGENTS.md · 253 lines

How it starts

The opening of the file, as written. The whole thing — 253 lines — stays where its author put it; the contents beside it link to each section on GitHub.

What this repo is

mnemos is shared, cloud-persistent memory for coding agents. The core system is a Go REST server backed by TiDB/MySQL, plus four agent integrations, a standalone CLI, and a small Astro site.

Cross-repo relationship: mem9 and mem9-node

  • mem9-node is a sibling repository at ../mem9-node. It is not a directory inside this repo.
  • dashboard/app in this repo is the frontend half of the dashboard product. In day-to-day discussion, "the dashboard backend" usually refers to code in mem9-node, especially apps/api and apps/worker.
  • dashboard/app/src/api/analysis-client.ts calls mem9-node endpoints for v1/analysis-jobs, v1/deep-analysis/*, and taxonomy/deep-analysis workflows.
  • mem9-node/apps/api/src/mem9-source.service.ts depends on this repo's Go API as the mem9 source of truth. Its MEM9_SOURCE_API_BASE_URL defaults to http://127.0.0.1:8080/v1alpha2/mem9s.
  • dashboard/app/src/api/provider-http.ts still sends the dashboard's standard /your-memory/api/... data requests to this repo's Go server (/v1alpha2/mem9s/...) using X-API-Key and X-Mnemo-Agent-Id.
  • When a task touches dashboard UI and backend behavior together, inspect both repos before assuming the implementation belongs only under server/ in this repo.

High-level modules

Path Role
server/ Go API server, business logic, TiDB SQL, tenant provisioning, runtime usage
cli/ Standalone Go CLI for exercising mnemo-server endpoints
dashboard/app/ React dashboard SPA; frontend half of the dashboard product
openclaw-plugin/ OpenClaw memory plugin (kind: "memory")
opencode-plugin/ OpenCode plugin (@mem9/opencode)
claude-plugin/ Claude Code plugin (hooks + skills)
codex-plugin/ Codex plugin (hooks + $mem9:* skills)
dsh-plugin/ DeepSeek Harness DSH/Cordis bundle
docs/design/ Architecture/proposal notes and design drafts
site/ Astro static site — deployed to Netlify from main branch
e2e/ Live end-to-end scripts against a running server
benchmark/MR-NIAH/ Benchmark harness for OpenClaw memory evaluation

Read the full file on GitHub · 253 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. 4d ago First seen · 253 lines · 3,034 tokens per session scan A 12177ba456f2

Subscribe to this mod's changes

mem9 AGENTS.md is an instructions file published in the GitHub repository mem9-ai/mem9 (1,202 stars, last pushed 9d ago), licensed Apache-2.0. It adds 3,034 tokens to every session, about $0.0152 per session on Opus 5. A static security scan graded it A with 2 findings (makes network calls, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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