agent-nero: Instructions file for Codex

AGENTS.md

agent-nero AGENTS.md is an instructions file for Codex, OpenCode from sanchez314c/agent-nero. It costs 1,097 tokens per session, scanned A, original, MIT.

A set of AGENTS.md instructions for working on Agent NERO, an MCP server that keeps named, persistent language-model agents and shared memory. AGENTS.md files give coding agents project-specific guidance.

In plain words
What is it for?
Use it when modifying Agent NERO, especially its agent pool, conversation history, shared memory, internal tools, or MCP tool handlers.
Why use it?
It explains the repository's purpose, structure, and common modification patterns so an agent can work in the codebase with the right context.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions Claude Code; mentions AGENTS.md.

This is sanchez314c/agent-nero's own configuration. It tells Codex and OpenCode how to work on agent-nero itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything agent-nero configures →

Reuse

Borrowing it

Nothing to install: this file belongs to sanchez314c/agent-nero. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/sanchez314c/agent-nero/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/sanchez314c/agent-nero

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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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.

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Per session 1,097 This file is loaded in full into every session.
When invoked 1,097 The same file — it is already loaded in full.
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 $0.01097 $0.01097
Opus 5.5 $0.00439 $0.00439
Sonnet 5.5 $0.00219 $0.00219
Haiku 4.5 $0.00110 $0.00110

Measured 2mo ago against content hash c9c959f2cc79, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agent-nero 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 2mo 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.

AGENTS.md · 79 lines

How it starts

The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — Agent NERO

Guide for AI agents and LLMs working on this codebase.

What This Project Does

Agent NERO is an MCP server that maintains a pool of persistent, named LLM agents. It runs as a subprocess of Claude Code over stdio transport. Each agent has its own conversation history, tool-use capabilities, and access to a shared memory bus.

Repository Structure

agent-nero/
├── src/
│   ├── index.ts           # Entry point — MCP server init, tool registration, stdio transport
│   ├── types.ts           # All interfaces: AgentConfig, AgentState, MemoryEntry, etc.
│   ├── agent.ts           # NeroAgent class — Anthropic API tool-use loop, history pruning
│   ├── agent-pool.ts      # AgentPool — spawn/kill/reset/broadcast/status for all agents
│   ├── agent-tools.ts     # 7 internal tools agents use (file I/O, grep, shell, memory)
│   ├── memory-bus.ts      # MemoryBus — shared key-value store with versioning
│   └── tools/             # 10 MCP tool handlers (one per file)
│       ├── spawn.ts       # nero_spawn — create named agent
│       ├── ask.ts         # nero_ask — send message, get response
│       ├── broadcast.ts   # nero_broadcast — message all/filtered agents
│       ├── status.ts      # nero_status — pool or agent status
│       ├── memory-write.ts # nero_memory_write — write to shared bus
│       ├── memory-read.ts  # nero_memory_read — read from shared bus
│       ├── memory-dump.ts  # nero_memory_dump — export memory to JSON file
│       ├── kill.ts        # nero_kill — terminate agent
│       ├── reset.ts       # nero_reset — clear history, keep agent alive
│       └── configure.ts   # nero_configure — update agent config at runtime
├── docs/
│   ├── ARCHITECTURE.md    # System architecture deep-dive
│   ├── INSTALLATION.md    # Setup and configuration guide
│   ├── DEVELOPMENT.md     # Development workflow
│   └── API.md             # Complete API docs for all tools
├── .github/               # Issue templates, PR template, CI workflow
├── package.json           # Node.js project config
├── tsconfig.json          # TypeScript strict mode, ES2022
├── run-source-linux.sh    # Quick-start script
└── LICENSE                # MIT

Read the full file on GitHub · 79 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. 2mo ago First seen · 79 lines · 1,097 tokens per session scan A c9c959f2cc79

Subscribe to this mod's changes

agent-nero AGENTS.md is an instructions file published in the GitHub repository sanchez314c/agent-nero (0 stars, last pushed 5mo ago), licensed MIT. It adds 1,097 tokens to every session, about $0.0044 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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