Zylos is open-source infrastructure that gives an AI agent persistent memory, scheduled activity, communication channels, and the ability to maintain and extend itself. Individuals and teams use it with Claude Code or Codex through Telegram, Lark, or a web console. Its catalogue add-ons define settings, instructions, and skills for operating the agent.
Borrowing it
Nothing to install: this file belongs to zylos-ai/zylos-core. 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/zylos-ai/zylos-core/main/AGENTS.mdgit clone --depth 1 https://github.com/zylos-ai/zylos-coreWrote 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/zylos-ai/zylos-core/agents-md)<a href="https://agentmods.dev/instructions/zylos-ai/zylos-core/agents-md"><img src="https://agentmods.dev/badge/instructions/zylos-ai/zylos-core/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/zylos-ai/zylos-core/agents-md"><img src="https://agentmods.dev/badge/instructions/zylos-ai/zylos-core/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 | $0.02035 | $0.02035 |
| Opus 5.5 | $0.00814 | $0.00814 |
| Sonnet 5.5 | $0.00407 | $0.00407 |
| Haiku 4.5 | $0.00203 | $0.00203 |
Grade B, and why
zylos-core AGENTS.md scanned grade B 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 9d 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
pm2 startup # Follow the returned sudo command Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
import { execFileSync } from 'child_process'; How it starts
The opening of the file, as written. The whole thing — 247 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This file provides guidance to Claude Code when working with code in this repository.
Project Standards
Programming Language
- Language: Node.js (JavaScript)
- Runtime: Node.js 20+
Module System
This project is ESM-only.
- ✅ Always use
import/export - ❌ Do NOT use CommonJS (
require,module.exports) - ❌ Do NOT mix module systems
Examples:
// ✅ Correct (ESM)
import { execFileSync } from 'child_process';
import path from 'path';
import os from 'os';
import fs from 'fs';
export function myFunction() {
// ...
}
export default myClass;
// ❌ Wrong (CommonJS)
const { execFileSync } = require('child_process');
const path = require('path');
module.exports = myFunction;
Release Process
When releasing a new version:
- Update
package.json— bumpversionfield to the new version number - Update
package-lock.json— runnpm installto sync the lock file with the new version - Update
CHANGELOG.md— add a new section following Keep a Changelog format with Added/Fixed/Changed/Removed subsections as applicable - Commit and push — include all three files in the PR
- Merge PR first — all changes must be merged to
mainbefore tagging - Tag and release — after merge, create a git tag (
vX.Y.Z) onmainand a GitHub release with release notes summarizing the changelog
Version numbers follow Semantic Versioning.
Project Structure
skills/- Claude Code skills (modular workflows)cli/- Command-line interface tools
Tests
Tests and their fixtures are development-only. They are excluded from
everything that reaches user machines: the npm package (.npmignore) and the
GitHub source archive that zylos upgrade --self downloads and syncs core
skills from (.gitattributes export-ignore). Users' security scanners must
not find fake tokens or mock binaries in an installed zylos.
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.
- 9d ago Changed · +23 lines · +317 tokens per session 04257ad80fe6
- 23d ago First seen · 224 lines · 1,718 tokens per session scan B 14a5a91d0c5a
zylos-core AGENTS.md is an instructions file published in the GitHub repository zylos-ai/zylos-core (1,160 stars, last pushed yesterday), licensed MIT. It adds 2,035 tokens to every session, about $0.0081 per session on Opus 5.5. A static security scan graded it B with 2 findings (asks for root, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-15.
zylos-core AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| zylos-core AGENTS.mdzylos-ai/zylos-core | Instructions file | 1.2k | yesterday | MIT | B | 2,035 | Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |